Repository: SciTools/iris (language: python)

Issue:
[CI Bot] environment lockfiles auto-update
Lockfiles updated to the latest resolvable environment.
### If the CI tasks fail, create a new branch based on this PR and add the required fixes to that branch.


Discussion / hints:

# :stopwatch: Performance Benchmark Report: 75e50bae

<details>
<summary>Performance shifts</summary>

```
| Change   | Before [3b0ab402]    | After [75e50bae]    |   Ratio | Benchmark (Parameter)                                                                     |
|----------|----------------------|---------------------|---------|-------------------------------------------------------------------------------------------|
| +        | 2.65±0.05ms          | 3.18±0.04ms         |    1.2  | experimental.ugrid.ConnectivityLazy.time_create(6)                                        |
| +        | 251±3μs              | 360±7μs             |    1.44 | experimental.ugrid.Mesh.time_add_connectivities(6)                                        |
| +        | 297±3μs              | 403±8μs             |    1.36 | experimental.ugrid.Mesh.time_create(6)                                                    |
| +        | 288±5μs              | 394±9μs             |    1.37 | experimental.ugrid.MeshLazy.time_add_connectivities(6)                                    |
| +        | 336±10μs             | 446±10μs            |    1.32 | experimental.ugrid.MeshLazy.time_create(6)                                                |
| +        | 11.5±0.07ms          | 13.8±0.3ms          |    1.2  | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(50) |
| +        | 286±2ms              | 353±3ms             |    1.24 | load.StructuredFF.time_structured_load((2, 2, 1000), True)                                |
```

</details>

<details>
<summary>Full benchmark results</summary>

```

Benchmarks that have stayed the same:

| Change   | Before [3b0ab402]    | After [75e50bae]    | Ratio   | Benchmark (Parameter)                                                                                |
|----------|----------------------|---------------------|---------|------------------------------------------------------------------------------------------------------|
|          | n/a                  | n/a                 | n/a     | aux_factory.FactoryCommon.time_create                                                                |
|          | 4.39±0.05μs          | 4.31±0.04μs         | 0.98    | aux_factory.HybridHeightFactory.time_create                                                          |
|          | 4.99±0.08μs          | 4.91±0.1μs          | 0.99    | coords.AncillaryVariable.time_create                                                                 |
|          | 427±3ns              | 427±5ns             | 1.00    | coords.AuxCoord.time_bounds                                                                          |
|          | 8.95±0.2μs           | 8.78±0.06μs         | 0.98    | coords.AuxCoord.time_create                                                                          |
|          | 411±4ns              | 402±3ns             | 0.98    | coords.AuxCoord.time_points                                                                          |
|          | 230±20μs             | 238±20μs            | 1.04    | coords.AuxCoordLazy.time_bounds                                                                      |
|          | 12.9±0.5μs           | 12.4±0.7μs          | 0.96    | coords.AuxCoordLazy.time_create                                                                      |
|          | 227±20μs             | 236±20μs            | 1.04    | coords.AuxCoordLazy.time_points                                                                      |
|          | 5.38±0.1μs           | 5.42±0.1μs          | 1.01    | coords.CellMeasure.time_create                                                                       |
|          | 1.14±0.01μs          | 1.12±0.01μs         | 0.99    | coords.CellMethod.time_create                                                                        |
|          | n/a                  | n/a                 | n/a     | coords.CoordCommon.time_create                                                                       |
|          | 109±1μs              | 112±2μs             | 1.03    | coords.DimCoord.time_create                                                                          |
|          | 31.6±0.4μs           | 31.6±1μs            | 1.00    | coords.DimCoord.time_regular                                                                         |
|          | 375±2ms              | 375±3ms             | 1.00    | cube.Aggregation.time_aggregated_by                                                                  |
|          | 60.1±0.2μs           | 58.4±0.6μs          | 0.97    | cube.AncillaryVariable.time_add                                                                      |
|          | 11.5±0.3μs           | 11.3±0.1μs          | 0.98    | cube.AncillaryVariable.time_create                                                                   |
|          | 67.3±0.4μs           | 66.1±1μs            | 0.98    | cube.AuxCoord.time_add                                                                               |
|          | 9.46±0.1μs           | 9.32±0.07μs         | 0.99    | cube.AuxCoord.time_create                                                                            |
|          | 5.97±0.09μs          | 5.96±0.09μs         | 1.00    | cube.AuxCoord.time_return_coord_dims                                                                 |
|          | 4.50±0.06μs          | 4.34±0.04μs         | 0.96    | cube.AuxCoord.time_return_coords                                                                     |
|          | 41.3±0.4μs           | 40.2±0.8μs          | 0.97    | cube.AuxFactory.time_add                                                                             |
|          | 12.6±0.2μs           | 12.5±0.2μs          | 0.99    | cube.AuxFactory.time_create                                                                          |
|          | 61.1±0.7μs           | 58.2±0.8μs          | 0.95    | cube.CellMeasure.time_add                                                                            |
|          | 11.6±0.5μs           | 11.1±0.2μs          | 0.96    | cube.CellMeasure.time_create                                                                         |
|          | 51.8±1μs             | 52.8±1μs            | 1.02    | cube.CellMethod.time_add                                                                             |
|          | 7.27±0.08μs          | 7.06±0.03μs         | 0.97    | cube.CellMethod.time_create                                                                          |
|          | n/a                  | n/a                 | n/a     | cube.ComponentCommon.time_add                                                                        |
|          | n/a                  | n/a                 | n/a     | cube.ComponentCommon.time_create                                                                     |
|          | 130±0.3ms            | 130±0.5ms           | 1.00    | cube.Concatenate.time_concatenate                                                                    |
|          | 6.79±0.05μs          | 6.62±0.04μs         | 0.97    | cube.Cube.time_basic                                                                                 |
|          | 57.8±0.5ns           | 57.8±0.3ns          | 1.00    | cube.Cube.time_rename                                                                                |
|          | 63.1±0.7μs           | 60.5±0.8μs          | 0.96    | cube.Equality.time_equality                                                                          |
|          | 325±2ms              | 325±3ms             | 1.00    | cube.Merge.time_merge                                                                                |
|          | 28.2±1μs             | 28.0±2μs            | 0.99    | cube.MeshCoord.time_add(10000)                                                                       |
|          | 29.8±2μs             | 30.1±1μs            | 1.01    | cube.MeshCoord.time_add(1000000)                                                                     |
|          | 25.5±2μs             | 25.3±1μs            | 0.99    | cube.MeshCoord.time_add(6)                                                                           |
|          | 19.5±0.5μs           | 18.8±0.3μs          | 0.96    | cube.MeshCoord.time_create(10000)                                                                    |
|          | 19.5±0.4μs           | 18.7±0.2μs          | 0.96    | cube.MeshCoord.time_create(1000000)                                                                  |
|          | 19.1±0.4μs           | 18.8±0.3μs          | 0.99    | cube.MeshCoord.time_create(6)                                                                        |
|          | 51.4±4μs             | 52.4±4μs            | 1.02    | cube.MeshCoord.time_remove(10000)                                                                    |
|          | 59.7±2μs             | 60.0±3μs            | 1.01    | cube.MeshCoord.time_remove(1000000)                                                                  |
|          | 44.0±4μs             | 44.7±5μs            | 1.01    | cube.MeshCoord.time_remove(6)                                                                        |
|          | 2.05±0.2ms           | 2.71±0.2ms          | ~1.33   | experimental.ugrid.Connectivity.time_create(1000000)                                                 |
|          | 1.54±0.01ms          | 1.81±0.02ms         | 1.18    | experimental.ugrid.Connectivity.time_create(6)                                                       |
|          | 616±10ns             | 607±7ns             | 0.99    | experimental.ugrid.Connectivity.time_indices(1000000)                                                |
|          | 613±20ns             | 600±6ns             | 0.98    | experimental.ugrid.Connectivity.time_indices(6)                                                      |
|          | 19.8±2ms             | 23.5±2ms            | 1.19    | experimental.ugrid.Connectivity.time_location_lengths(1000000)                                       |
|          | 2.27±0.01ms          | 2.67±0.03ms         | 1.18    | experimental.ugrid.Connectivity.time_location_lengths(6)                                             |
|          | 22.3±3ms             | 27.8±3ms            | ~1.25   | experimental.ugrid.Connectivity.time_validate_indices(1000000)                                       |
|          | 3.38±0.04ms          | 3.97±0.03ms         | 1.18    | experimental.ugrid.Connectivity.time_validate_indices(6)                                             |
|          | 3.58±0.1ms           | 4.10±0.1ms          | 1.15    | experimental.ugrid.ConnectivityLazy.time_create(1000000)                                             |
|          | 240±6μs              | 256±6μs             | 1.07    | experimental.ugrid.ConnectivityLazy.time_indices(1000000)                                            |
|          | 234±7μs              | 250±8μs             | 1.07    | experimental.ugrid.ConnectivityLazy.time_indices(6)                                                  |
|          | 19.8±0.4ms           | 20.3±0.4ms          | 1.03    | experimental.ugrid.ConnectivityLazy.time_location_lengths(1000000)                                   |
|          | 2.48±0.04ms          | 2.92±0.03ms         | 1.18    | experimental.ugrid.ConnectivityLazy.time_location_lengths(6)                                         |
|          | 22.1±0.5ms           | 23.0±0.4ms          | 1.04    | experimental.ugrid.ConnectivityLazy.time_validate_indices(1000000)                                   |
|          | 3.57±0.06ms          | 4.21±0.06ms         | 1.18    | experimental.ugrid.ConnectivityLazy.time_validate_indices(6)                                         |
|          | 12.6±0.06μs          | 12.8±0.1μs          | 1.01    | experimental.ugrid.Mesh.time_add_connectivities(1000000)                                             |
|          | 4.92±0.04μs          | 4.88±0.04μs         | 0.99    | experimental.ugrid.Mesh.time_add_coords(1000000)                                                     |
|          | 4.91±0.03μs          | 4.85±0.03μs         | 0.99    | experimental.ugrid.Mesh.time_add_coords(6)                                                           |
|          | 5.05±0.04μs          | 4.97±0.1μs          | 0.98    | experimental.ugrid.Mesh.time_connectivities(1000000)                                                 |
|          | 5.04±0.04μs          | 4.97±0.1μs          | 0.99    | experimental.ugrid.Mesh.time_connectivities(6)                                                       |
|          | 5.89±0.09μs          | 5.85±0.07μs         | 0.99    | experimental.ugrid.Mesh.time_coords(1000000)                                                         |
|          | 5.85±0.06μs          | 5.82±0.09μs         | 0.99    | experimental.ugrid.Mesh.time_coords(6)                                                               |
|          | 46.5±0.3μs           | 45.3±0.4μs          | 0.97    | experimental.ugrid.Mesh.time_create(1000000)                                                         |
|          | 71.8±2ms             | 74.8±2ms            | 1.04    | experimental.ugrid.Mesh.time_eq(1000000)                                                             |
|          | 274±2μs              | 273±6μs             | 1.00    | experimental.ugrid.Mesh.time_eq(6)                                                                   |
|          | 4.93±0.06μs          | 4.88±0.1μs          | 0.99    | experimental.ugrid.Mesh.time_remove_connectivities(1000000)                                          |
|          | 5.01±0.06μs          | 4.90±0.04μs         | 0.98    | experimental.ugrid.Mesh.time_remove_connectivities(6)                                                |
|          | 7.35±0.09μs          | 7.35±0.06μs         | 1.00    | experimental.ugrid.Mesh.time_remove_coords(1000000)                                                  |
|          | 7.27±0.1μs           | 7.37±0.08μs         | 1.01    | experimental.ugrid.Mesh.time_remove_coords(6)                                                        |
|          | 10.3±0.06μs          | 10.6±0.07μs         | 1.03    | experimental.ugrid.MeshCoord.time_bounds(10000)                                                      |
|          | 118±2ms              | 118±2ms             | 1.00    | experimental.ugrid.MeshCoord.time_bounds(1000000)                                                    |
|          | 5.34±0.04μs          | 5.29±0.02μs         | 0.99    | experimental.ugrid.MeshCoord.time_bounds(6)                                                          |
|          | 3.19±0.01ms          | 3.63±0.03ms         | 1.14    | experimental.ugrid.MeshCoord.time_create(10000)                                                      |
|          | 3.22±0.04ms          | 3.60±0.04ms         | 1.12    | experimental.ugrid.MeshCoord.time_create(1000000)                                                    |
|          | 199±3μs              | 201±2μs             | 1.01    | experimental.ugrid.MeshCoord.time_create(6)                                                          |
|          | 3.59±0.04μs          | 3.63±0.04μs         | 1.01    | experimental.ugrid.MeshCoord.time_points(10000)                                                      |
|          | 4.19±0.04μs          | 4.20±0.04μs         | 1.00    | experimental.ugrid.MeshCoord.time_points(1000000)                                                    |
|          | 2.97±0.04μs          | 2.91±0.03μs         | 0.98    | experimental.ugrid.MeshCoord.time_points(6)                                                          |
|          | 6.92±0.08ms          | 7.52±0.1ms          | 1.09    | experimental.ugrid.MeshCoordLazy.time_bounds(10000)                                                  |
|          | 121±2ms              | 120±2ms             | 0.99    | experimental.ugrid.MeshCoordLazy.time_bounds(1000000)                                                |
|          | 11.9±0.6μs           | 11.7±0.5μs          | 0.98    | experimental.ugrid.MeshCoordLazy.time_bounds(6)                                                      |
|          | 3.25±0.04ms          | 3.60±0.1ms          | 1.11    | experimental.ugrid.MeshCoordLazy.time_create(10000)                                                  |
|          | 3.29±0.04ms          | 3.68±0.06ms         | 1.12    | experimental.ugrid.MeshCoordLazy.time_create(1000000)                                                |
|          | 234±6μs              | 236±10μs            | 1.01    | experimental.ugrid.MeshCoordLazy.time_create(6)                                                      |
|          | 2.43±0.08ms          | 2.53±0.08ms         | 1.04    | experimental.ugrid.MeshCoordLazy.time_points(10000)                                                  |
|          | 4.49±0.06ms          | 4.61±0.06ms         | 1.03    | experimental.ugrid.MeshCoordLazy.time_points(1000000)                                                |
|          | 7.72±0.5μs           | 8.34±0.5μs          | 1.08    | experimental.ugrid.MeshCoordLazy.time_points(6)                                                      |
|          | 31.4±0.9μs           | 32.2±1μs            | 1.03    | experimental.ugrid.MeshLazy.time_add_connectivities(1000000)                                         |
|          | 19.1±1μs             | 18.6±1μs            | 0.98    | experimental.ugrid.MeshLazy.time_add_coords(1000000)                                                 |
|          | 15.7±0.8μs           | 15.3±0.7μs          | 0.98    | experimental.ugrid.MeshLazy.time_add_coords(6)                                                       |
|          | 17.5±0.9μs           | 16.5±0.6μs          | 0.94    | experimental.ugrid.MeshLazy.time_connectivities(1000000)                                             |
|          | 16.2±0.4μs           | 16.4±0.7μs          | 1.01    | experimental.ugrid.MeshLazy.time_connectivities(6)                                                   |
|          | 19.4±0.6μs           | 19.1±0.9μs          | 0.98    | experimental.ugrid.MeshLazy.time_coords(1000000)                                                     |
|          | 18.6±0.5μs           | 18.9±0.7μs          | 1.01    | experimental.ugrid.MeshLazy.time_coords(6)                                                           |
|          | 78.7±3μs             | 77.9±2μs            | 0.99    | experimental.ugrid.MeshLazy.time_create(1000000)                                                     |
|          | 73.6±2ms             | 76.4±2ms            | 1.04    | experimental.ugrid.MeshLazy.time_eq(1000000)                                                         |
|          | 339±8μs              | 344±20μs            | 1.01    | experimental.ugrid.MeshLazy.time_eq(6)                                                               |
|          | 18.4±0.6μs           | 18.6±1μs            | 1.01    | experimental.ugrid.MeshLazy.time_remove_connectivities(1000000)                                      |
|          | 17.3±0.6μs           | 17.6±1μs            | 1.02    | experimental.ugrid.MeshLazy.time_remove_connectivities(6)                                            |
|          | 31.4±0.9μs           | 31.2±1μs            | 0.99    | experimental.ugrid.MeshLazy.time_remove_coords(1000000)                                              |
|          | 30.0±0.8μs           | 30.5±1μs            | 1.02    | experimental.ugrid.MeshLazy.time_remove_coords(6)                                                    |
|          | n/a                  | n/a                 | n/a     | experimental.ugrid.UGridCommon.time_create(1000000)                                                  |
|          | n/a                  | n/a                 | n/a     | experimental.ugrid.UGridCommon.time_create(6)                                                        |
|          | 501±10ns             | 490±6ns             | 0.98    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(50)               |
|          | 248±2ms              | 249±1ms             | 1.00    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(500)              |
|          | 13.8±0.7ms           | 15.3±0.7ms          | 1.11    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(500)           |
|          | 5.0                  | 5.0                 | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(50)  |
|          | 5.0                  | 5.0                 | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(500) |
|          | 125±2ms              | 135±1ms             | 1.08    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(50)          |
|          | 731±2ms              | 735±2ms             | 1.01    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(500)         |
|          | 86.3±1ms             | 96.6±1ms            | 1.12    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(50)                              |
|          | 687±3ms              | 689±3ms             | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(500)                             |
|          | 2.1752849999999997   | 2.1752849999999997  | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(50)                   |
|          | 216.01528499999998   | 216.01528499999998  | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(500)                  |
|          | 583±10μs             | 566±3μs             | 0.97    | import_iris.Iris.time__concatenate                                                                   |
|          | 165±2μs              | 165±3μs             | 1.00    | import_iris.Iris.time__constraints                                                                   |
|          | 99.8±1μs             | 100±1μs             | 1.01    | import_iris.Iris.time__data_manager                                                                  |
|          | 84.7±0.8μs           | 84.1±0.8μs          | 0.99    | import_iris.Iris.time__deprecation                                                                   |
|          | 107±0.8μs            | 108±2μs             | 1.01    | import_iris.Iris.time__lazy_data                                                                     |
|          | 803±20μs             | 794±9μs             | 0.99    | import_iris.Iris.time__merge                                                                         |
|          | 71.3±1μs             | 71.4±1μs            | 1.00    | import_iris.Iris.time__representation                                                                |
|          | 432±3μs              | 436±6μs             | 1.01    | import_iris.Iris.time_analysis                                                                       |
|          | 126±0.9μs            | 125±0.7μs           | 0.99    | import_iris.Iris.time_analysis__area_weighted                                                        |
|          | 98.6±1μs             | 98.9±0.7μs          | 1.00    | import_iris.Iris.time_analysis__grid_angles                                                          |
|          | 215±1μs              | 216±3μs             | 1.01    | import_iris.Iris.time_analysis__interpolation                                                        |
|          | 170±5μs              | 168±2μs             | 0.99    | import_iris.Iris.time_analysis__regrid                                                               |
|          | 101±1μs              | 101±1μs             | 1.00    | import_iris.Iris.time_analysis__scipy_interpolate                                                    |
|          | 125±0.8μs            | 125±0.5μs           | 1.01    | import_iris.Iris.time_analysis_calculus                                                              |
|          | 283±5μs              | 279±2μs             | 0.99    | import_iris.Iris.time_analysis_cartography                                                           |
|          | 83.0±0.4μs           | 83.6±0.6μs          | 1.01    | import_iris.Iris.time_analysis_geomerty                                                              |
|          | 198±3μs              | 198±4μs             | 1.00    | import_iris.Iris.time_analysis_maths                                                                 |
|          | 89.8±0.4μs           | 89.6±0.6μs          | 1.00    | import_iris.Iris.time_analysis_stats                                                                 |
|          | 163±2μs              | 164±0.5μs           | 1.01    | import_iris.Iris.time_analysis_trajectory                                                            |
|          | 266±4μs              | 266±4μs             | 1.00    | import_iris.Iris.time_aux_factory                                                                    |
|          | 79.5±1μs             | 79.8±0.6μs          | 1.00    | import_iris.Iris.time_common                                                                         |
|          | 153±3μs              | 153±2μs             | 1.00    | import_iris.Iris.time_common_lenient                                                                 |
|          | 882±8μs              | 878±10μs            | 1.00    | import_iris.Iris.time_common_metadata                                                                |
|          | 123±1μs              | 123±2μs             | 1.00    | import_iris.Iris.time_common_mixin                                                                   |
|          | 1.02±0.01ms          | 1.03±0.01ms         | 1.01    | import_iris.Iris.time_common_resolve                                                                 |
|          | 182±1μs              | 186±2μs             | 1.02    | import_iris.Iris.time_config                                                                         |
|          | 104±0.3μs            | 107±1μs             | 1.03    | import_iris.Iris.time_coord_categorisation                                                           |
|          | 320±3μs              | 323±10μs            | 1.01    | import_iris.Iris.time_coord_systems                                                                  |
|          | 636±8μs              | 636±10μs            | 1.00    | import_iris.Iris.time_coords                                                                         |
|          | 591±10μs             | 595±6μs             | 1.01    | import_iris.Iris.time_cube                                                                           |
|          | 202±2μs              | 206±2μs             | 1.02    | import_iris.Iris.time_exceptions                                                                     |
|          | 71.6±0.4μs           | 72.5±1μs            | 1.01    | import_iris.Iris.time_experimental                                                                   |
|          | 192±1μs              | 193±2μs             | 1.00    | import_iris.Iris.time_fileformats                                                                    |
|          | 226±6μs              | 224±7μs             | 0.99    | import_iris.Iris.time_fileformats__ff                                                                |
|          | 2.44±0.01ms          | 2.43±0.02ms         | 1.00    | import_iris.Iris.time_fileformats__ff_cross_references                                               |
|          | 72.3±0.3μs           | 73.9±1μs            | 1.02    | import_iris.Iris.time_fileformats__pp_lbproc_pairs                                                   |
|          | 106±0.5μs            | 106±0.5μs           | 1.00    | import_iris.Iris.time_fileformats_abf                                                                |
|          | 317±3μs              | 316±5μs             | 1.00    | import_iris.Iris.time_fileformats_cf                                                                 |
|          | 5.47±0.09ms          | 5.51±0.07ms         | 1.01    | import_iris.Iris.time_fileformats_dot                                                                |
|          | 68.3±0.7μs           | 69.9±1μs            | 1.02    | import_iris.Iris.time_fileformats_name                                                               |
|          | 236±4μs              | 233±2μs             | 0.99    | import_iris.Iris.time_fileformats_name_loaders                                                       |
|          | 112±1μs              | 112±2μs             | 0.99    | import_iris.Iris.time_fileformats_netcdf                                                             |
|          | 112±1μs              | 111±0.9μs           | 0.99    | import_iris.Iris.time_fileformats_nimrod                                                             |
|          | 190±1μs              | 187±1μs             | 0.99    | import_iris.Iris.time_fileformats_nimrod_load_rules                                                  |
|          | 675±5μs              | 675±6μs             | 1.00    | import_iris.Iris.time_fileformats_pp                                                                 |
|          | 159±2μs              | 159±2μs             | 1.00    | import_iris.Iris.time_fileformats_pp_load_rules                                                      |
|          | 121±0.9μs            | 120±0.9μs           | 0.99    | import_iris.Iris.time_fileformats_pp_save_rules                                                      |
|          | 437±1μs              | 437±3μs             | 1.00    | import_iris.Iris.time_fileformats_rules                                                              |
|          | 193±2μs              | 192±2μs             | 1.00    | import_iris.Iris.time_fileformats_structured_array_identification                                    |
|          | 78.8±0.6μs           | 79.3±1μs            | 1.01    | import_iris.Iris.time_fileformats_um                                                                 |
|          | 150±0.6μs            | 152±3μs             | 1.01    | import_iris.Iris.time_fileformats_um__fast_load                                                      |
|          | 130±0.9μs            | 130±3μs             | 1.00    | import_iris.Iris.time_fileformats_um__fast_load_structured_fields                                    |
|          | 71.0±0.6μs           | 71.0±0.5μs          | 1.00    | import_iris.Iris.time_fileformats_um__ff_replacement                                                 |
|          | 77.3±0.4μs           | 76.9±0.8μs          | 0.99    | import_iris.Iris.time_fileformats_um__optimal_array_structuring                                      |
|          | 869±7μs              | 874±7μs             | 1.01    | import_iris.Iris.time_fileformats_um_cf_map                                                          |
|          | 126±1μs              | 126±0.8μs           | 1.00    | import_iris.Iris.time_io                                                                             |
|          | 159±2μs              | 158±3μs             | 0.99    | import_iris.Iris.time_io_format_picker                                                               |
|          | 195±3μs              | 192±1μs             | 0.99    | import_iris.Iris.time_iris                                                                           |
|          | 118±2μs              | 118±2μs             | 1.00    | import_iris.Iris.time_iterate                                                                        |
|          | 8.13±0.02ms          | 8.19±0.06ms         | 1.01    | import_iris.Iris.time_palette                                                                        |
|          | 306±4μs              | 298±2μs             | 0.97    | import_iris.Iris.time_plot                                                                           |
|          | 92.5±0.7μs           | 93.5±0.9μs          | 1.01    | import_iris.Iris.time_quickplot                                                                      |
|          | 1.93±0.01ms          | 1.90±0.02ms         | 0.98    | import_iris.Iris.time_std_names                                                                      |
|          | 1.70±0.01ms          | 1.70±0.01ms         | 1.00    | import_iris.Iris.time_symbols                                                                        |
|          | 43.7±1ms             | 43.7±1ms            | 1.00    | import_iris.Iris.time_tests                                                                          |
|          | 219±2μs              | 217±1μs             | 0.99    | import_iris.Iris.time_third_party_cartopy                                                            |
|          | 4.79±0.03ms          | 4.78±0.02ms         | 1.00    | import_iris.Iris.time_third_party_cf_units                                                           |
|          | 101±1μs              | 103±0.9μs           | 1.01    | import_iris.Iris.time_third_party_cftime                                                             |
|          | 2.66±0.02ms          | 2.64±0.01ms         | 0.99    | import_iris.Iris.time_third_party_matplotlib                                                         |
|          | 1.00±0ms             | 1.01±0.01ms         | 1.01    | import_iris.Iris.time_third_party_numpy                                                              |
|          | 152±2μs              | 151±2μs             | 0.99    | import_iris.Iris.time_third_party_scipy                                                              |
|          | 92.4±1μs             | 92.0±0.8μs          | 1.00    | import_iris.Iris.time_time                                                                           |
|          | 283±5μs              | 284±5μs             | 1.01    | import_iris.Iris.time_util                                                                           |
|          | 83.6±0.8μs           | 82.6±1μs            | 0.99    | iterate.IZip.time_izip                                                                               |
|          | 7.42±0.02ms          | 7.78±0.06ms         | 1.05    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'FF')                                           |
|          | 23.6±0.3ms           | 23.2±0.3ms          | 0.99    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'NetCDF')                                       |
|          | 8.06±0.05ms          | 8.45±0.06ms         | 1.05    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'PP')                                           |
|          | 7.38±0.03ms          | 7.73±0.06ms         | 1.05    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'FF')                                            |
|          | 20.2±0.3ms           | 20.1±0.2ms          | 0.99    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'NetCDF')                                        |
|          | 8.17±0.2ms           | 8.46±0.07ms         | 1.04    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'PP')                                            |
|          | 1.25±0.02s           | 1.31±0.01s          | 1.05    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'FF')                                             |
|          | 19.1±0.4ms           | 19.3±0.1ms          | 1.01    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'NetCDF')                                         |
|          | 1.39±0.01s           | 1.47±0.01s          | 1.05    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'PP')                                             |
|          | 1.25±0.02s           | 1.31±0.01s          | 1.05    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'FF')                                              |
|          | 19.2±0.2ms           | 19.3±0.2ms          | 1.00    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'NetCDF')                                          |
|          | 1.39±0.02s           | 1.47±0.01s          | 1.06    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'PP')                                              |
|          | 3.58±0.05ms          | 3.77±0.07ms         | 1.05    | load.LoadAndRealise.time_load((50, 50, 2), False, 'FF')                                              |
|          | 18.7±0.3ms           | 18.7±0.3ms          | 1.00    | load.LoadAndRealise.time_load((50, 50, 2), False, 'NetCDF')                                          |
|          | 3.82±0.02ms          | 3.97±0.04ms         | 1.04    | load.LoadAndRealise.time_load((50, 50, 2), False, 'PP')                                              |
|          | 3.60±0.03ms          | 3.79±0.03ms         | 1.05    | load.LoadAndRealise.time_load((50, 50, 2), True, 'FF')                                               |
|          | 18.7±0.2ms           | 18.7±0.2ms          | 1.00    | load.LoadAndRealise.time_load((50, 50, 2), True, 'NetCDF')                                           |
|          | 3.82±0.03ms          | 4.03±0.05ms         | 1.06    | load.LoadAndRealise.time_load((50, 50, 2), True, 'PP')                                               |
|          | 32.7±2ms             | 34.9±2ms            | 1.07    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'FF')                                        |
|          | 19.5±0.6ms           | 18.7±0.6ms          | 0.96    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'NetCDF')                                    |
|          | 13.1±1ms             | 13.7±1ms            | 1.05    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'PP')                                        |
|          | 25.5±0.9ms           | 25.9±2ms            | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'FF')                                         |
|          | 72.7±1ms             | 72.5±1ms            | 1.00    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'NetCDF')                                     |
|          | 25.3±0.7ms           | 25.8±1ms            | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'PP')                                         |
|          | 378±3ms              | 436±3ms             | 1.16    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'FF')                                          |
|          | 2.78±0.1ms           | 2.78±0.09ms         | 1.00    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'NetCDF')                                      |
|          | 387±3ms              | 445±3ms             | 1.15    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'PP')                                          |
|          | 386±3ms              | 443±3ms             | 1.15    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'FF')                                           |
|          | 2.82±0.1ms           | 2.88±0.1ms          | 1.02    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'NetCDF')                                       |
|          | 390±3ms              | 447±3ms             | 1.15    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'PP')                                           |
|          | 1.37±0.09ms          | 1.54±0.08ms         | 1.12    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'FF')                                           |
|          | 2.71±0.09ms          | 2.87±0.1ms          | 1.06    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'NetCDF')                                       |
|          | 1.36±0.08ms          | 1.57±0.07ms         | 1.15    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'PP')                                           |
|          | 1.37±0.08ms          | 1.53±0.09ms         | 1.12    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'FF')                                            |
|          | 2.86±0.1ms           | 2.88±0.08ms         | 1.01    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'NetCDF')                                        |
|          | 1.38±0.06ms          | 1.57±0.07ms         | 1.14    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'PP')                                            |
|          | 335±3ms              | 332±6ms             | 0.99    | load.ManyVars.time_many_var_load                                                                     |
|          | 7.50±0.08ms          | 8.03±0.09ms         | 1.07    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'FF')                                     |
|          | 8.32±0.08ms          | 8.73±0.07ms         | 1.05    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'PP')                                     |
|          | 1.25±0s              | 1.33±0.01s          | 1.07    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'FF')                                       |
|          | 1.41±0.01s           | 1.49±0.01s          | 1.06    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'PP')                                       |
|          | 3.62±0.03ms          | 3.86±0.07ms         | 1.06    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'FF')                                          |
|          | 3.93±0.06ms          | 4.10±0.03ms         | 1.04    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'PP')                                          |
|          | 7.38±0.02ms          | 7.74±0.03ms         | 1.05    | load.StructuredFF.time_structured_load((1280, 960, 5), False)                                        |
|          | 4.16±0.02ms          | 4.51±0.05ms         | 1.08    | load.StructuredFF.time_structured_load((1280, 960, 5), True)                                         |
|          | 1.23±0.02s           | 1.31±0.02s          | 1.07    | load.StructuredFF.time_structured_load((2, 2, 1000), False)                                          |
|          | 3.56±0.05ms          | 3.72±0.03ms         | 1.04    | load.StructuredFF.time_structured_load((2, 2, 2), False)                                             |
|          | 3.29±0.04ms          | 3.41±0.03ms         | 1.04    | load.StructuredFF.time_structured_load((2, 2, 2), True)                                              |
|          | 131±3ms              | 138±2ms             | 1.05    | load.TimeConstraint.time_time_constraint(20, 'FF')                                                   |
|          | 21.9±0.1ms           | 21.9±0.3ms          | 1.00    | load.TimeConstraint.time_time_constraint(20, 'NetCDF')                                               |
|          | 146±2ms              | 151±1ms             | 1.04    | load.TimeConstraint.time_time_constraint(20, 'PP')                                                   |
|          | 27.1±0.3ms           | 27.8±0.8ms          | 1.03    | load.TimeConstraint.time_time_constraint(3, 'FF')                                                    |
|          | 21.8±0.2ms           | 21.7±0.5ms          | 1.00    | load.TimeConstraint.time_time_constraint(3, 'NetCDF')                                                |
|          | 28.9±0.2ms           | 29.3±0.3ms          | 1.01    | load.TimeConstraint.time_time_constraint(3, 'PP')                                                    |
|          | 16.4±0.3ms           | 17.0±0.3ms          | 1.04    | load.ugrid.BasicLoading.time_load_file(1)                                                            |
|          | 36.2±0.9ms           | 38.8±0.5ms          | 1.07    | load.ugrid.BasicLoading.time_load_file(200000)                                                       |
|          | 13.2±0.2ms           | 13.7±0.2ms          | 1.04    | load.ugrid.BasicLoading.time_load_mesh(1)                                                            |
|          | 20.4±0.4ms           | 21.1±0.7ms          | 1.04    | load.ugrid.BasicLoading.time_load_mesh(200000)                                                       |
|          | 16.5±0.3ms           | 16.9±0.6ms          | 1.02    | load.ugrid.BasicLoadingTime.time_load_file(1)                                                        |
|          | 19.4±0.5ms           | 19.4±0.9ms          | 1.00    | load.ugrid.BasicLoadingTime.time_load_file(200000)                                                   |
|          | 13.3±0.4ms           | 13.8±0.4ms          | 1.03    | load.ugrid.BasicLoadingTime.time_load_mesh(1)                                                        |
|          | 16.0±0.3ms           | 16.0±0.7ms          | 1.00    | load.ugrid.BasicLoadingTime.time_load_mesh(200000)                                                   |
|          | 17.3±0.4ms           | 18.2±0.5ms          | 1.05    | load.ugrid.Callback.time_load_file_callback(1)                                                       |
|          | 43.0±0.5ms           | 46.9±0.7ms          | 1.09    | load.ugrid.Callback.time_load_file_callback(200000)                                                  |
|          | 17.6±0.5ms           | 17.9±0.3ms          | 1.02    | load.ugrid.CallbackTime.time_load_file_callback(1)                                                   |
|          | 21.4±0.5ms           | 20.9±0.6ms          | 0.98    | load.ugrid.CallbackTime.time_load_file_callback(200000)                                              |
|          | 2.63±0.1ms           | 2.70±0.1ms          | 1.02    | load.ugrid.DataRealisation.time_realise_data(10000)                                                  |
|          | 5.21±0.7ms           | 5.42±0.1ms          | 1.04    | load.ugrid.DataRealisation.time_realise_data(200000)                                                 |
|          | 38.5±1ms             | 38.9±1ms            | 1.01    | load.ugrid.DataRealisationTime.time_realise_data(10000)                                              |
|          | 800±4ms              | 799±7ms             | 1.00    | load.ugrid.DataRealisationTime.time_realise_data(200000)                                             |
|          | 102±0.7ns            | 102±0.9ns           | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_AncillaryVariableMetadata_fields                |
|          | 905±3ns              | 892±7ns             | 0.99    | metadata_manager_factory.MetadataManagerFactory.time_AncillaryVariableMetadata_values                |
|          | 103±3ns              | 101±0.4ns           | 0.98    | metadata_manager_factory.MetadataManagerFactory.time_BaseMetadata_fields                             |
|          | 910±10ns             | 900±5ns             | 0.99    | metadata_manager_factory.MetadataManagerFactory.time_BaseMetadata_values                             |
|          | 103±1ns              | 101±0.3ns           | 0.99    | metadata_manager_factory.MetadataManagerFactory.time_CellMeasuresMetadata_fields                     |
|          | 997±5ns              | 1.01±0.01μs         | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_CellMeasuresMetadata_values                     |
|          | 102±1ns              | 102±0.9ns           | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_CoordMetadata_fields                            |
|          | 1.06±0μs             | 1.08±0.01μs         | 1.02    | metadata_manager_factory.MetadataManagerFactory.time_CoordMetadata_values                            |
|          | 101±0.5ns            | 101±0.3ns           | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_CubeMetadata_fields                             |
|          | 1.00±0.01μs          | 1.01±0.01μs         | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_CubeMetadata_values                             |
|          | 102±0.6ns            | 102±0.6ns           | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_DimCoordMetadata_fields                         |
|          | 1.14±0.01μs          | 1.15±0.01μs         | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_DimCoordMetadata_values                         |
|          | 999±7ns              | 995±7ns             | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(1)            |
|          | 6.73±0.09μs          | 6.79±0.08μs         | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(10)           |
|          | 64.2±0.4μs           | 64.0±0.5μs          | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(100)          |
|          | 1.00±0.01μs          | 991±10ns            | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(1)                         |
|          | 6.77±0.04μs          | 6.77±0.08μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(10)                        |
|          | 64.2±0.4μs           | 64.5±0.2μs          | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(100)                       |
|          | 1.05±0.01μs          | 1.04±0.02μs         | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(1)                  |
|          | 7.27±0.1μs           | 7.20±0.2μs          | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(10)                 |
|          | 68.1±0.3μs           | 71.7±2μs            | 1.05    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(100)                |
|          | 1.10±0.02μs          | 1.10±0.03μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(1)                        |
|          | 7.60±0.01μs          | 7.64±0.08μs         | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(10)                       |
|          | 72.0±0.1μs           | 73.2±0.9μs          | 1.02    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(100)                      |
|          | 1.06±0.01μs          | 1.04±0.01μs         | 0.98    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(1)                         |
|          | 7.36±0.1μs           | 7.16±0.1μs          | 0.97    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(10)                        |
|          | 68.0±0.5μs           | 68.7±0.4μs          | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(100)                       |
|          | 1.13±0.01μs          | 1.11±0.01μs         | 0.98    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(1)                     |
|          | 7.97±0.05μs          | 8.05±0.1μs          | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(10)                    |
|          | 76.2±1μs             | 76.8±0.8μs          | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(100)                   |
|          | 107±0.6ns            | 108±1ns             | 1.01    | mixin.CFVariableMixin.time_get_attributes                                                            |
|          | 107±0.8ns            | 106±0.4ns           | 1.00    | mixin.CFVariableMixin.time_get_long_name                                                             |
|          | 966±20ns             | 965±9ns             | 1.00    | mixin.CFVariableMixin.time_get_metadata                                                              |
|          | 107±0.9ns            | 107±1ns             | 1.00    | mixin.CFVariableMixin.time_get_standard_name                                                         |
|          | 107±1ns              | 110±3ns             | 1.02    | mixin.CFVariableMixin.time_get_units                                                                 |
|          | 107±1ns              | 107±1ns             | 1.00    | mixin.CFVariableMixin.time_get_var_name                                                              |
|          | 697±10ns             | 694±6ns             | 1.00    | mixin.CFVariableMixin.time_set_attributes                                                            |
|          | 117±2ns              | 114±0.9ns           | 0.98    | mixin.CFVariableMixin.time_set_long_name                                                             |
|          | 3.48±0.04μs          | 3.48±0.03μs         | 1.00    | mixin.CFVariableMixin.time_set_metadata__dict                                                        |
|          | 4.41±0.03μs          | 4.31±0.03μs         | 0.98    | mixin.CFVariableMixin.time_set_metadata__metadata                                                    |
|          | 4.32±0.04μs          | 4.24±0.01μs         | 0.98    | mixin.CFVariableMixin.time_set_metadata__tuple                                                       |
|          | 558±20ns             | 545±8ns             | 0.98    | mixin.CFVariableMixin.time_set_standard_name                                                         |
|          | 421±8ns              | 420±5ns             | 1.00    | mixin.CFVariableMixin.time_set_units                                                                 |
|          | 438±3ns              | 434±4ns             | 0.99    | mixin.CFVariableMixin.time_set_var_name                                                              |
|          | 367±2ms              | 369±2ms             | 1.00    | plot.AuxSort.time_aux_sort                                                                           |
|          | 77.3±3ms             | 75.8±5ms            | 0.98    | regridding.CurvilinearRegridding.time_regrid_pic                                                     |
|          | 94.4±0.9ms           | 95.6±0.7ms          | 1.01    | regridding.HorizontalChunkedRegridding.time_regrid_area_w                                            |
|          | 48.2±2ms             | 49.5±3ms            | 1.03    | regridding.HorizontalChunkedRegridding.time_regrid_area_w_new_grid                                   |
|          | 3.78±0.03ms          | 4.10±0.05ms         | 1.09    | save.NetcdfSave.time_netcdf_save_cube(50, False)                                                     |
|          | 87.4±0.6ms           | 94.2±0.8ms          | 1.08    | save.NetcdfSave.time_netcdf_save_cube(50, True)                                                      |
|          | 53.7±0.7ms           | 54.5±1ms            | 1.01    | save.NetcdfSave.time_netcdf_save_cube(600, False)                                                    |
|          | 586±4ms              | 593±6ms             | 1.01    | save.NetcdfSave.time_netcdf_save_cube(600, True)                                                     |
|          | 102±0.9ns            | 100±0.6ns           | 0.98    | save.NetcdfSave.time_netcdf_save_mesh(50, False)                                                     |
|          | 72.9±0.5ms           | 78.5±1ms            | 1.08    | save.NetcdfSave.time_netcdf_save_mesh(50, True)                                                      |
|          | 103±1ns              | 100±1ns             | 0.98    | save.NetcdfSave.time_netcdf_save_mesh(600, False)                                                    |
|          | 517±4ms              | 522±3ms             | 1.01    | save.NetcdfSave.time_netcdf_save_mesh(600, True)                                                     |
|          | 36.2±1ms             | 41.2±0.7ms          | 1.14    | stats.PearsonR.time_lazy                                                                             |
|          | 19.1±0.3ms           | 18.8±0.2ms          | 0.99    | stats.PearsonR.time_real                                                                             |
|          | 23.8±0.5ms           | 22.9±2ms            | 0.96    | trajectory.TrajectoryInterpolation.time_trajectory_linear                                            |
|          | 60.0±0.9ms           | 59.8±0.5ms          | 1.00    | trajectory.TrajectoryInterpolation.time_trajectory_nearest                                           |

Benchmarks that have got worse:

| Change   | Before [3b0ab402]    | After [75e50bae]    |   Ratio | Benchmark (Parameter)                                                                     |
|----------|----------------------|---------------------|---------|-------------------------------------------------------------------------------------------|
| +        | 2.65±0.05ms          | 3.18±0.04ms         |    1.2  | experimental.ugrid.ConnectivityLazy.time_create(6)                                        |
| +        | 251±3μs              | 360±7μs             |    1.44 | experimental.ugrid.Mesh.time_add_connectivities(6)                                        |
| +        | 297±3μs              | 403±8μs             |    1.36 | experimental.ugrid.Mesh.time_create(6)                                                    |
| +        | 288±5μs              | 394±9μs             |    1.37 | experimental.ugrid.MeshLazy.time_add_connectivities(6)                                    |
| +        | 336±10μs             | 446±10μs            |    1.32 | experimental.ugrid.MeshLazy.time_create(6)                                                |
| +        | 11.5±0.07ms          | 13.8±0.3ms          |    1.2  | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(50) |
| +        | 286±2ms              | 353±3ms             |    1.24 | load.StructuredFF.time_structured_load((2, 2, 1000), True)                                |
```

</details>

Generated by GHA run [`8078150718`](https://github.com/SciTools/iris/actions/runs/8078150718)


# :stopwatch: Performance Benchmark Report: 75e50bae

<details>
<summary>Performance shifts</summary>

```
| Change   | Before [3b0ab402]    | After [75e50bae]    |   Ratio | Benchmark (Parameter)                                      |
|----------|----------------------|---------------------|---------|------------------------------------------------------------|
| +        | 1.52±0.01ms          | 1.87±0.01ms         |    1.23 | experimental.ugrid.Connectivity.time_create(6)             |
| +        | 3.39±0.06ms          | 4.09±0.08ms         |    1.21 | experimental.ugrid.Connectivity.time_validate_indices(6)   |
| +        | 2.69±0.04ms          | 3.24±0.05ms         |    1.2  | experimental.ugrid.ConnectivityLazy.time_create(6)         |
| +        | 253±4μs              | 364±3μs             |    1.44 | experimental.ugrid.Mesh.time_add_connectivities(6)         |
| +        | 294±4μs              | 404±3μs             |    1.38 | experimental.ugrid.Mesh.time_create(6)                     |
| +        | 297±7μs              | 406±10μs            |    1.37 | experimental.ugrid.MeshLazy.time_add_connectivities(6)     |
| +        | 347±10μs             | 450±10μs            |    1.3  | experimental.ugrid.MeshLazy.time_create(6)                 |
| +        | 291±2ms              | 365±5ms             |    1.25 | load.StructuredFF.time_structured_load((2, 2, 1000), True) |
```

</details>

<details>
<summary>Full benchmark results</summary>

```

Benchmarks that have stayed the same:

| Change   | Before [3b0ab402]    | After [75e50bae]    | Ratio   | Benchmark (Parameter)                                                                                |
|----------|----------------------|---------------------|---------|------------------------------------------------------------------------------------------------------|
|          | n/a                  | n/a                 | n/a     | aux_factory.FactoryCommon.time_create                                                                |
|          | 4.42±0.05μs          | 4.29±0.01μs         | 0.97    | aux_factory.HybridHeightFactory.time_create                                                          |
|          | 4.96±0.04μs          | 4.81±0.1μs          | 0.97    | coords.AncillaryVariable.time_create                                                                 |
|          | 432±8ns              | 420±3ns             | 0.97    | coords.AuxCoord.time_bounds                                                                          |
|          | 8.94±0.08μs          | 8.83±0.1μs          | 0.99    | coords.AuxCoord.time_create                                                                          |
|          | 416±4ns              | 402±4ns             | 0.97    | coords.AuxCoord.time_points                                                                          |
|          | 236±20μs             | 244±20μs            | 1.04    | coords.AuxCoordLazy.time_bounds                                                                      |
|          | 12.6±0.6μs           | 12.8±0.8μs          | 1.02    | coords.AuxCoordLazy.time_create                                                                      |
|          | 228±20μs             | 263±30μs            | 1.15    | coords.AuxCoordLazy.time_points                                                                      |
|          | 5.33±0.08μs          | 5.36±0.1μs          | 1.00    | coords.CellMeasure.time_create                                                                       |
|          | 1.08±0.02μs          | 1.09±0μs            | 1.01    | coords.CellMethod.time_create                                                                        |
|          | n/a                  | n/a                 | n/a     | coords.CoordCommon.time_create                                                                       |
|          | 113±2μs              | 112±1μs             | 1.00    | coords.DimCoord.time_create                                                                          |
|          | 31.7±0.4μs           | 31.7±0.6μs          | 1.00    | coords.DimCoord.time_regular                                                                         |
|          | 384±2ms              | 381±5ms             | 0.99    | cube.Aggregation.time_aggregated_by                                                                  |
|          | 60.1±0.8μs           | 59.4±0.8μs          | 0.99    | cube.AncillaryVariable.time_add                                                                      |
|          | 11.3±0.4μs           | 11.8±0.3μs          | 1.05    | cube.AncillaryVariable.time_create                                                                   |
|          | 67.6±0.9μs           | 65.9±0.7μs          | 0.98    | cube.AuxCoord.time_add                                                                               |
|          | 9.56±0.2μs           | 9.73±0.1μs          | 1.02    | cube.AuxCoord.time_create                                                                            |
|          | 5.95±0.05μs          | 6.03±0.08μs         | 1.01    | cube.AuxCoord.time_return_coord_dims                                                                 |
|          | 4.45±0.04μs          | 4.53±0.04μs         | 1.02    | cube.AuxCoord.time_return_coords                                                                     |
|          | 41.2±0.4μs           | 40.5±0.4μs          | 0.98    | cube.AuxFactory.time_add                                                                             |
|          | 13.0±0.4μs           | 12.3±0.4μs          | 0.95    | cube.AuxFactory.time_create                                                                          |
|          | 60.5±0.3μs           | 59.8±1μs            | 0.99    | cube.CellMeasure.time_add                                                                            |
|          | 11.5±0.3μs           | 12.1±0.6μs          | 1.06    | cube.CellMeasure.time_create                                                                         |
|          | 52.2±0.8μs           | 52.5±0.4μs          | 1.01    | cube.CellMethod.time_add                                                                             |
|          | 7.34±0.07μs          | 7.36±0.2μs          | 1.00    | cube.CellMethod.time_create                                                                          |
|          | n/a                  | n/a                 | n/a     | cube.ComponentCommon.time_add                                                                        |
|          | n/a                  | n/a                 | n/a     | cube.ComponentCommon.time_create                                                                     |
|          | 131±0.6ms            | 130±0.3ms           | 1.00    | cube.Concatenate.time_concatenate                                                                    |
|          | 6.83±0.07μs          | 6.76±0.1μs          | 0.99    | cube.Cube.time_basic                                                                                 |
|          | 57.7±0.2ns           | 57.9±0.7ns          | 1.00    | cube.Cube.time_rename                                                                                |
|          | 61.8±0.6μs           | 62.3±1μs            | 1.01    | cube.Equality.time_equality                                                                          |
|          | 334±4ms              | 330±4ms             | 0.99    | cube.Merge.time_merge                                                                                |
|          | 29.6±2μs             | 29.6±1μs            | 1.00    | cube.MeshCoord.time_add(10000)                                                                       |
|          | 31.8±3μs             | 30.9±2μs            | 0.97    | cube.MeshCoord.time_add(1000000)                                                                     |
|          | 27.9±2μs             | 27.0±2μs            | 0.97    | cube.MeshCoord.time_add(6)                                                                           |
|          | 19.5±0.2μs           | 20.1±0.5μs          | 1.03    | cube.MeshCoord.time_create(10000)                                                                    |
|          | 19.5±0.4μs           | 19.4±0.2μs          | 0.99    | cube.MeshCoord.time_create(1000000)                                                                  |
|          | 19.1±0.3μs           | 19.0±0.3μs          | 0.99    | cube.MeshCoord.time_create(6)                                                                        |
|          | 60.3±4μs             | 58.3±3μs            | 0.97    | cube.MeshCoord.time_remove(10000)                                                                    |
|          | 64.6±4μs             | 60.6±3μs            | 0.94    | cube.MeshCoord.time_remove(1000000)                                                                  |
|          | 60.6±3μs             | 56.6±3μs            | 0.93    | cube.MeshCoord.time_remove(6)                                                                        |
|          | 2.10±0.4ms           | 2.82±0.3ms          | ~1.34   | experimental.ugrid.Connectivity.time_create(1000000)                                                 |
|          | 604±2ns              | 603±9ns             | 1.00    | experimental.ugrid.Connectivity.time_indices(1000000)                                                |
|          | 605±4ns              | 598±7ns             | 0.99    | experimental.ugrid.Connectivity.time_indices(6)                                                      |
|          | 20.1±2ms             | 23.7±2ms            | 1.17    | experimental.ugrid.Connectivity.time_location_lengths(1000000)                                       |
|          | 2.31±0.04ms          | 2.69±0.02ms         | 1.16    | experimental.ugrid.Connectivity.time_location_lengths(6)                                             |
|          | 22.7±3ms             | 28.2±3ms            | ~1.24   | experimental.ugrid.Connectivity.time_validate_indices(1000000)                                       |
|          | 3.76±0.2ms           | 4.46±0.1ms          | 1.18    | experimental.ugrid.ConnectivityLazy.time_create(1000000)                                             |
|          | 249±10μs             | 258±7μs             | 1.04    | experimental.ugrid.ConnectivityLazy.time_indices(1000000)                                            |
|          | 240±9μs              | 255±8μs             | 1.06    | experimental.ugrid.ConnectivityLazy.time_indices(6)                                                  |
|          | 19.9±0.5ms           | 20.5±0.6ms          | 1.03    | experimental.ugrid.ConnectivityLazy.time_location_lengths(1000000)                                   |
|          | 2.58±0.1ms           | 2.96±0.06ms         | 1.15    | experimental.ugrid.ConnectivityLazy.time_location_lengths(6)                                         |
|          | 22.5±0.6ms           | 23.5±0.5ms          | 1.05    | experimental.ugrid.ConnectivityLazy.time_validate_indices(1000000)                                   |
|          | 3.72±0.1ms           | 4.33±0.1ms          | 1.16    | experimental.ugrid.ConnectivityLazy.time_validate_indices(6)                                         |
|          | 12.7±0.07μs          | 12.9±0.2μs          | 1.02    | experimental.ugrid.Mesh.time_add_connectivities(1000000)                                             |
|          | 4.88±0.03μs          | 4.83±0.03μs         | 0.99    | experimental.ugrid.Mesh.time_add_coords(1000000)                                                     |
|          | 4.86±0.1μs           | 4.81±0.07μs         | 0.99    | experimental.ugrid.Mesh.time_add_coords(6)                                                           |
|          | 5.09±0.1μs           | 5.07±0.09μs         | 1.00    | experimental.ugrid.Mesh.time_connectivities(1000000)                                                 |
|          | 5.03±0.06μs          | 5.09±0.09μs         | 1.01    | experimental.ugrid.Mesh.time_connectivities(6)                                                       |
|          | 5.90±0.09μs          | 5.92±0.09μs         | 1.00    | experimental.ugrid.Mesh.time_coords(1000000)                                                         |
|          | 5.85±0.05μs          | 5.89±0.06μs         | 1.01    | experimental.ugrid.Mesh.time_coords(6)                                                               |
|          | 46.1±0.5μs           | 46.2±0.6μs          | 1.00    | experimental.ugrid.Mesh.time_create(1000000)                                                         |
|          | 79.3±4ms             | 79.6±3ms            | 1.00    | experimental.ugrid.Mesh.time_eq(1000000)                                                             |
|          | 275±3μs              | 276±1μs             | 1.00    | experimental.ugrid.Mesh.time_eq(6)                                                                   |
|          | 4.99±0.07μs          | 5.05±0.1μs          | 1.01    | experimental.ugrid.Mesh.time_remove_connectivities(1000000)                                          |
|          | 4.97±0.06μs          | 5.01±0.1μs          | 1.01    | experimental.ugrid.Mesh.time_remove_connectivities(6)                                                |
|          | 7.37±0.1μs           | 7.36±0.09μs         | 1.00    | experimental.ugrid.Mesh.time_remove_coords(1000000)                                                  |
|          | 7.41±0.07μs          | 7.40±0.04μs         | 1.00    | experimental.ugrid.Mesh.time_remove_coords(6)                                                        |
|          | 10.5±0.09μs          | 10.8±0.1μs          | 1.03    | experimental.ugrid.MeshCoord.time_bounds(10000)                                                      |
|          | 123±3ms              | 121±2ms             | 0.98    | experimental.ugrid.MeshCoord.time_bounds(1000000)                                                    |
|          | 5.48±0.08μs          | 5.35±0.07μs         | 0.98    | experimental.ugrid.MeshCoord.time_bounds(6)                                                          |
|          | 3.26±0.07ms          | 3.68±0.05ms         | 1.13    | experimental.ugrid.MeshCoord.time_create(10000)                                                      |
|          | 3.31±0.03ms          | 3.72±0.05ms         | 1.13    | experimental.ugrid.MeshCoord.time_create(1000000)                                                    |
|          | 200±2μs              | 199±2μs             | 1.00    | experimental.ugrid.MeshCoord.time_create(6)                                                          |
|          | 3.63±0.02μs          | 3.72±0.05μs         | 1.03    | experimental.ugrid.MeshCoord.time_points(10000)                                                      |
|          | 4.18±0.05μs          | 4.24±0.04μs         | 1.01    | experimental.ugrid.MeshCoord.time_points(1000000)                                                    |
|          | 2.97±0.03μs          | 2.95±0.02μs         | 0.99    | experimental.ugrid.MeshCoord.time_points(6)                                                          |
|          | 7.45±0.2ms           | 7.83±0.2ms          | 1.05    | experimental.ugrid.MeshCoordLazy.time_bounds(10000)                                                  |
|          | 124±3ms              | 123±3ms             | 0.99    | experimental.ugrid.MeshCoordLazy.time_bounds(1000000)                                                |
|          | 13.3±0.5μs           | 13.0±0.4μs          | 0.98    | experimental.ugrid.MeshCoordLazy.time_bounds(6)                                                      |
|          | 3.36±0.09ms          | 3.70±0.05ms         | 1.10    | experimental.ugrid.MeshCoordLazy.time_create(10000)                                                  |
|          | 3.32±0.08ms          | 3.72±0.06ms         | 1.12    | experimental.ugrid.MeshCoordLazy.time_create(1000000)                                                |
|          | 247±10μs             | 239±5μs             | 0.97    | experimental.ugrid.MeshCoordLazy.time_create(6)                                                      |
|          | 2.64±0.2ms           | 2.75±0.09ms         | 1.04    | experimental.ugrid.MeshCoordLazy.time_points(10000)                                                  |
|          | 4.67±0.2ms           | 4.76±0.2ms          | 1.02    | experimental.ugrid.MeshCoordLazy.time_points(1000000)                                                |
|          | 9.45±0.5μs           | 9.22±0.7μs          | 0.98    | experimental.ugrid.MeshCoordLazy.time_points(6)                                                      |
|          | 33.0±2μs             | 33.8±1μs            | 1.02    | experimental.ugrid.MeshLazy.time_add_connectivities(1000000)                                         |
|          | 19.5±1μs             | 20.9±2μs            | 1.07    | experimental.ugrid.MeshLazy.time_add_coords(1000000)                                                 |
|          | 18.3±2μs             | 18.1±1μs            | 0.99    | experimental.ugrid.MeshLazy.time_add_coords(6)                                                       |
|          | 17.6±2μs             | 17.4±1μs            | 0.99    | experimental.ugrid.MeshLazy.time_connectivities(1000000)                                             |
|          | 17.8±1μs             | 17.5±1μs            | 0.98    | experimental.ugrid.MeshLazy.time_connectivities(6)                                                   |
|          | 19.7±1μs             | 19.6±2μs            | 1.00    | experimental.ugrid.MeshLazy.time_coords(1000000)                                                     |
|          | 19.9±1μs             | 19.9±1μs            | 1.00    | experimental.ugrid.MeshLazy.time_coords(6)                                                           |
|          | 79.0±6μs             | 78.9±4μs            | 1.00    | experimental.ugrid.MeshLazy.time_create(1000000)                                                     |
|          | 79.6±3ms             | 80.8±2ms            | 1.02    | experimental.ugrid.MeshLazy.time_eq(1000000)                                                         |
|          | 373±10μs             | 366±10μs            | 0.98    | experimental.ugrid.MeshLazy.time_eq(6)                                                               |
|          | 19.1±1μs             | 17.9±0.6μs          | 0.94    | experimental.ugrid.MeshLazy.time_remove_connectivities(1000000)                                      |
|          | 19.5±1μs             | 18.8±0.9μs          | 0.97    | experimental.ugrid.MeshLazy.time_remove_connectivities(6)                                            |
|          | 35.0±3μs             | 31.8±2μs            | 0.91    | experimental.ugrid.MeshLazy.time_remove_coords(1000000)                                              |
|          | 32.9±2μs             | 31.5±1μs            | 0.96    | experimental.ugrid.MeshLazy.time_remove_coords(6)                                                    |
|          | n/a                  | n/a                 | n/a     | experimental.ugrid.UGridCommon.time_create(1000000)                                                  |
|          | n/a                  | n/a                 | n/a     | experimental.ugrid.UGridCommon.time_create(6)                                                        |
|          | 504±5ns              | 494±10ns            | 0.98    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(50)               |
|          | 250±1ms              | 249±2ms             | 0.99    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(500)              |
|          | 12.1±0.1ms           | 13.9±0.2ms          | 1.16    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(50)            |
|          | 13.6±0.7ms           | 15.9±0.4ms          | 1.17    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(500)           |
|          | 5.0                  | 5.0                 | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(50)  |
|          | 5.0                  | 5.0                 | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(500) |
|          | 130±2ms              | 140±2ms             | 1.07    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(50)          |
|          | 739±2ms              | 744±4ms             | 1.01    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(500)         |
|          | 90.6±1ms             | 97.9±0.7ms          | 1.08    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(50)                              |
|          | 693±3ms              | 695±4ms             | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(500)                             |
|          | 2.1752849999999997   | 2.1752849999999997  | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(50)                   |
|          | 216.01528499999998   | 216.01528499999998  | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(500)                  |
|          | 580±5μs              | 582±7μs             | 1.00    | import_iris.Iris.time__concatenate                                                                   |
|          | 171±5μs              | 175±8μs             | 1.02    | import_iris.Iris.time__constraints                                                                   |
|          | 108±3μs              | 100±2μs             | 0.93    | import_iris.Iris.time__data_manager                                                                  |
|          | 85.2±0.7μs           | 85.2±1μs            | 1.00    | import_iris.Iris.time__deprecation                                                                   |
|          | 109±2μs              | 109±1μs             | 1.00    | import_iris.Iris.time__lazy_data                                                                     |
|          | 803±9μs              | 821±30μs            | 1.02    | import_iris.Iris.time__merge                                                                         |
|          | 71.2±0.8μs           | 72.4±0.9μs          | 1.02    | import_iris.Iris.time__representation                                                                |
|          | 447±10μs             | 446±9μs             | 1.00    | import_iris.Iris.time_analysis                                                                       |
|          | 131±3μs              | 130±1μs             | 0.99    | import_iris.Iris.time_analysis__area_weighted                                                        |
|          | 101±2μs              | 99.7±1μs            | 0.99    | import_iris.Iris.time_analysis__grid_angles                                                          |
|          | 226±6μs              | 223±2μs             | 0.98    | import_iris.Iris.time_analysis__interpolation                                                        |
|          | 175±2μs              | 179±3μs             | 1.02    | import_iris.Iris.time_analysis__regrid                                                               |
|          | 104±2μs              | 104±2μs             | 1.00    | import_iris.Iris.time_analysis__scipy_interpolate                                                    |
|          | 126±2μs              | 131±3μs             | 1.04    | import_iris.Iris.time_analysis_calculus                                                              |
|          | 297±4μs              | 284±2μs             | 0.96    | import_iris.Iris.time_analysis_cartography                                                           |
|          | 84.0±0.9μs           | 83.9±0.8μs          | 1.00    | import_iris.Iris.time_analysis_geomerty                                                              |
|          | 203±4μs              | 201±3μs             | 0.99    | import_iris.Iris.time_analysis_maths                                                                 |
|          | 91.3±1μs             | 91.7±0.3μs          | 1.00    | import_iris.Iris.time_analysis_stats                                                                 |
|          | 169±3μs              | 172±4μs             | 1.02    | import_iris.Iris.time_analysis_trajectory                                                            |
|          | 299±5μs              | 281±5μs             | 0.94    | import_iris.Iris.time_aux_factory                                                                    |
|          | 80.7±0.7μs           | 80.6±0.3μs          | 1.00    | import_iris.Iris.time_common                                                                         |
|          | 160±4μs              | 155±3μs             | 0.97    | import_iris.Iris.time_common_lenient                                                                 |
|          | 895±10μs             | 917±30μs            | 1.03    | import_iris.Iris.time_common_metadata                                                                |
|          | 125±3μs              | 127±2μs             | 1.02    | import_iris.Iris.time_common_mixin                                                                   |
|          | 1.05±0.01ms          | 1.04±0.02ms         | 1.00    | import_iris.Iris.time_common_resolve                                                                 |
|          | 192±4μs              | 190±2μs             | 0.99    | import_iris.Iris.time_config                                                                         |
|          | 105±1μs              | 106±1μs             | 1.01    | import_iris.Iris.time_coord_categorisation                                                           |
|          | 331±6μs              | 332±7μs             | 1.00    | import_iris.Iris.time_coord_systems                                                                  |
|          | 644±9μs              | 661±10μs            | 1.03    | import_iris.Iris.time_coords                                                                         |
|          | 605±10μs             | 627±40μs            | 1.04    | import_iris.Iris.time_cube                                                                           |
|          | 211±7μs              | 206±2μs             | 0.98    | import_iris.Iris.time_exceptions                                                                     |
|          | 72.5±0.2μs           | 72.7±0.4μs          | 1.00    | import_iris.Iris.time_experimental                                                                   |
|          | 197±3μs              | 194±4μs             | 0.98    | import_iris.Iris.time_fileformats                                                                    |
|          | 228±5μs              | 228±4μs             | 1.00    | import_iris.Iris.time_fileformats__ff                                                                |
|          | 2.43±0.03ms          | 2.40±0.03ms         | 0.99    | import_iris.Iris.time_fileformats__ff_cross_references                                               |
|          | 74.1±0.6μs           | 73.8±0.7μs          | 1.00    | import_iris.Iris.time_fileformats__pp_lbproc_pairs                                                   |
|          | 109±2μs              | 107±0.6μs           | 0.98    | import_iris.Iris.time_fileformats_abf                                                                |
|          | 334±6μs              | 323±10μs            | 0.97    | import_iris.Iris.time_fileformats_cf                                                                 |
|          | 5.73±0.09ms          | 5.61±0.1ms          | 0.98    | import_iris.Iris.time_fileformats_dot                                                                |
|          | 68.8±0.4μs           | 68.5±0.8μs          | 0.99    | import_iris.Iris.time_fileformats_name                                                               |
|          | 240±3μs              | 240±5μs             | 1.00    | import_iris.Iris.time_fileformats_name_loaders                                                       |
|          | 113±1μs              | 113±1μs             | 1.00    | import_iris.Iris.time_fileformats_netcdf                                                             |
|          | 113±1μs              | 115±2μs             | 1.02    | import_iris.Iris.time_fileformats_nimrod                                                             |
|          | 192±2μs              | 189±6μs             | 0.98    | import_iris.Iris.time_fileformats_nimrod_load_rules                                                  |
|          | 706±6μs              | 690±9μs             | 0.98    | import_iris.Iris.time_fileformats_pp                                                                 |
|          | 160±2μs              | 165±3μs             | 1.03    | import_iris.Iris.time_fileformats_pp_load_rules                                                      |
|          | 121±0.6μs            | 122±3μs             | 1.01    | import_iris.Iris.time_fileformats_pp_save_rules                                                      |
|          | 448±7μs              | 437±7μs             | 0.98    | import_iris.Iris.time_fileformats_rules                                                              |
|          | 200±4μs              | 197±3μs             | 0.98    | import_iris.Iris.time_fileformats_structured_array_identification                                    |
|          | 80.1±1μs             | 79.6±0.7μs          | 0.99    | import_iris.Iris.time_fileformats_um                                                                 |
|          | 154±2μs              | 152±2μs             | 0.99    | import_iris.Iris.time_fileformats_um__fast_load                                                      |
|          | 133±3μs              | 134±3μs             | 1.00    | import_iris.Iris.time_fileformats_um__fast_load_structured_fields                                    |
|          | 71.2±0.7μs           | 71.2±0.5μs          | 1.00    | import_iris.Iris.time_fileformats_um__ff_replacement                                                 |
|          | 78.4±0.9μs           | 78.2±0.4μs          | 1.00    | import_iris.Iris.time_fileformats_um__optimal_array_structuring                                      |
|          | 877±6μs              | 867±6μs             | 0.99    | import_iris.Iris.time_fileformats_um_cf_map                                                          |
|          | 129±2μs              | 130±2μs             | 1.01    | import_iris.Iris.time_io                                                                             |
|          | 165±3μs              | 163±5μs             | 0.99    | import_iris.Iris.time_io_format_picker                                                               |
|          | 197±2μs              | 199±3μs             | 1.01    | import_iris.Iris.time_iris                                                                           |
|          | 120±2μs              | 122±2μs             | 1.01    | import_iris.Iris.time_iterate                                                                        |
|          | 8.25±0.07ms          | 8.24±0.06ms         | 1.00    | import_iris.Iris.time_palette                                                                        |
|          | 306±3μs              | 303±1μs             | 0.99    | import_iris.Iris.time_plot                                                                           |
|          | 94.2±1μs             | 93.3±0.4μs          | 0.99    | import_iris.Iris.time_quickplot                                                                      |
|          | 1.97±0.03ms          | 1.94±0.04ms         | 0.98    | import_iris.Iris.time_std_names                                                                      |
|          | 1.73±0.03ms          | 1.72±0.02ms         | 0.99    | import_iris.Iris.time_symbols                                                                        |
|          | 114±2ms              | 113±3ms             | 0.99    | import_iris.Iris.time_tests                                                                          |
|          | 224±5μs              | 221±3μs             | 0.99    | import_iris.Iris.time_third_party_cartopy                                                            |
|          | 4.90±0.07ms          | 4.84±0.03ms         | 0.99    | import_iris.Iris.time_third_party_cf_units                                                           |
|          | 104±0.9μs            | 103±0.8μs           | 0.99    | import_iris.Iris.time_third_party_cftime                                                             |
|          | 2.70±0.03ms          | 2.66±0.02ms         | 0.99    | import_iris.Iris.time_third_party_matplotlib                                                         |
|          | 1.01±0ms             | 1.01±0.01ms         | 1.00    | import_iris.Iris.time_third_party_numpy                                                              |
|          | 154±2μs              | 151±2μs             | 0.99    | import_iris.Iris.time_third_party_scipy                                                              |
|          | 94.1±1μs             | 94.1±1μs            | 1.00    | import_iris.Iris.time_time                                                                           |
|          | 289±7μs              | 281±3μs             | 0.97    | import_iris.Iris.time_util                                                                           |
|          | 84.0±1μs             | 82.5±0.7μs          | 0.98    | iterate.IZip.time_izip                                                                               |
|          | 7.86±0.3ms           | 7.95±0.1ms          | 1.01    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'FF')                                           |
|          | 24.7±0.2ms           | 23.7±0.4ms          | 0.96    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'NetCDF')                                       |
|          | 8.32±0.2ms           | 8.68±0.1ms          | 1.04    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'PP')                                           |
|          | 7.62±0.2ms           | 7.89±0.07ms         | 1.04    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'FF')                                            |
|          | 21.5±0.2ms           | 20.9±0.4ms          | 0.97    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'NetCDF')                                        |
|          | 8.56±0.2ms           | 8.58±0.08ms         | 1.00    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'PP')                                            |
|          | 1.26±0.01s           | 1.32±0.01s          | 1.05    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'FF')                                             |
|          | 20.1±0.5ms           | 20.4±0.4ms          | 1.01    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'NetCDF')                                         |
|          | 1.39±0.01s           | 1.48±0.01s          | 1.06    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'PP')                                             |
|          | 1.25±0.01s           | 1.32±0.02s          | 1.06    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'FF')                                              |
|          | 20.2±0.4ms           | 20.1±0.3ms          | 1.00    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'NetCDF')                                          |
|          | 1.39±0.01s           | 1.49±0.01s          | 1.07    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'PP')                                              |
|          | 3.58±0.03ms          | 3.76±0.02ms         | 1.05    | load.LoadAndRealise.time_load((50, 50, 2), False, 'FF')                                              |
|          | 19.8±0.2ms           | 19.3±0.4ms          | 0.97    | load.LoadAndRealise.time_load((50, 50, 2), False, 'NetCDF')                                          |
|          | 3.91±0.07ms          | 4.02±0.02ms         | 1.03    | load.LoadAndRealise.time_load((50, 50, 2), False, 'PP')                                              |
|          | 3.59±0.06ms          | 3.76±0.06ms         | 1.05    | load.LoadAndRealise.time_load((50, 50, 2), True, 'FF')                                               |
|          | 19.7±0.2ms           | 19.4±0.3ms          | 0.98    | load.LoadAndRealise.time_load((50, 50, 2), True, 'NetCDF')                                           |
|          | 3.88±0.03ms          | 4.03±0.02ms         | 1.04    | load.LoadAndRealise.time_load((50, 50, 2), True, 'PP')                                               |
|          | 32.7±3ms             | 33.8±3ms            | 1.04    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'FF')                                        |
|          | 19.9±0.8ms           | 19.5±0.5ms          | 0.98    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'NetCDF')                                    |
|          | 12.5±1ms             | 13.0±2ms            | 1.04    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'PP')                                        |
|          | 25.6±1ms             | 26.1±2ms            | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'FF')                                         |
|          | 72.8±1ms             | 72.8±1ms            | 1.00    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'NetCDF')                                     |
|          | 25.6±1ms             | 26.1±2ms            | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'PP')                                         |
|          | 397±3ms              | 452±3ms             | 1.14    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'FF')                                          |
|          | 3.07±0.1ms           | 3.19±0.1ms          | 1.04    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'NetCDF')                                      |
|          | 400±4ms              | 456±4ms             | 1.14    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'PP')                                          |
|          | 398±4ms              | 459±4ms             | 1.15    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'FF')                                           |
|          | 3.11±0.1ms           | 3.14±0.1ms          | 1.01    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'NetCDF')                                       |
|          | 406±4ms              | 462±5ms             | 1.14    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'PP')                                           |
|          | 1.45±0.1ms           | 1.59±0.08ms         | 1.10    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'FF')                                           |
|          | 3.12±0.08ms          | 3.18±0.1ms          | 1.02    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'NetCDF')                                       |
|          | 1.45±0.07ms          | 1.57±0.09ms         | 1.09    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'PP')                                           |
|          | 1.43±0.1ms           | 1.63±0.08ms         | 1.14    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'FF')                                            |
|          | 3.21±0.04ms          | 3.27±0.1ms          | 1.02    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'NetCDF')                                        |
|          | 1.40±0.06ms          | 1.64±0.1ms          | 1.17    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'PP')                                            |
|          | 334±2ms              | 336±5ms             | 1.01    | load.ManyVars.time_many_var_load                                                                     |
|          | 7.68±0.1ms           | 7.92±0.06ms         | 1.03    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'FF')                                     |
|          | 8.52±0.1ms           | 8.80±0.1ms          | 1.03    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'PP')                                     |
|          | 1.26±0.01s           | 1.34±0.01s          | 1.06    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'FF')                                       |
|          | 1.42±0.01s           | 1.51±0.01s          | 1.06    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'PP')                                       |
|          | 3.70±0.04ms          | 3.81±0.01ms         | 1.03    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'FF')                                          |
|          | 4.00±0.05ms          | 4.06±0.01ms         | 1.02    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'PP')                                          |
|          | 7.41±0.09ms          | 8.08±0.1ms          | 1.09    | load.StructuredFF.time_structured_load((1280, 960, 5), False)                                        |
|          | 4.24±0.06ms          | 4.62±0.03ms         | 1.09    | load.StructuredFF.time_structured_load((1280, 960, 5), True)                                         |
|          | 1.24±0.01s           | 1.32±0.01s          | 1.06    | load.StructuredFF.time_structured_load((2, 2, 1000), False)                                          |
|          | 3.61±0.05ms          | 3.81±0.04ms         | 1.05    | load.StructuredFF.time_structured_load((2, 2, 2), False)                                             |
|          | 3.23±0.03ms          | 3.41±0.01ms         | 1.06    | load.StructuredFF.time_structured_load((2, 2, 2), True)                                              |
|          | 134±4ms              | 140±1ms             | 1.05    | load.TimeConstraint.time_time_constraint(20, 'FF')                                                   |
|          | 23.0±0.2ms           | 22.6±0.2ms          | 0.98    | load.TimeConstraint.time_time_constraint(20, 'NetCDF')                                               |
|          | 147±4ms              | 156±1ms             | 1.06    | load.TimeConstraint.time_time_constraint(20, 'PP')                                                   |
|          | 27.2±0.2ms           | 28.3±0.4ms          | 1.04    | load.TimeConstraint.time_time_constraint(3, 'FF')                                                    |
|          | 22.9±0.5ms           | 22.7±0.3ms          | 0.99    | load.TimeConstraint.time_time_constraint(3, 'NetCDF')                                                |
|          | 29.7±0.5ms           | 30.2±0.4ms          | 1.02    | load.TimeConstraint.time_time_constraint(3, 'PP')                                                    |
|          | 17.8±0.5ms           | 18.0±0.5ms          | 1.01    | load.ugrid.BasicLoading.time_load_file(1)                                                            |
|          | 37.5±0.7ms           | 39.7±0.4ms          | 1.06    | load.ugrid.BasicLoading.time_load_file(200000)                                                       |
|          | 14.2±0.2ms           | 14.3±0.4ms          | 1.01    | load.ugrid.BasicLoading.time_load_mesh(1)                                                            |
|          | 21.8±0.4ms           | 22.2±0.7ms          | 1.02    | load.ugrid.BasicLoading.time_load_mesh(200000)                                                       |
|          | 17.5±0.2ms           | 17.8±0.6ms          | 1.02    | load.ugrid.BasicLoadingTime.time_load_file(1)                                                        |
|          | 20.4±0.5ms           | 20.6±0.6ms          | 1.01    | load.ugrid.BasicLoadingTime.time_load_file(200000)                                                   |
|          | 14.0±0.3ms           | 14.4±0.4ms          | 1.04    | load.ugrid.BasicLoadingTime.time_load_mesh(1)                                                        |
|          | 17.2±0.4ms           | 17.2±0.3ms          | 1.00    | load.ugrid.BasicLoadingTime.time_load_mesh(200000)                                                   |
|          | 18.3±0.5ms           | 19.4±0.8ms          | 1.06    | load.ugrid.Callback.time_load_file_callback(1)                                                       |
|          | 45.5±0.8ms           | 48.9±0.6ms          | 1.07    | load.ugrid.Callback.time_load_file_callback(200000)                                                  |
|          | 19.1±0.3ms           | 18.8±0.3ms          | 0.99    | load.ugrid.CallbackTime.time_load_file_callback(1)                                                   |
|          | 22.2±0.2ms           | 22.4±0.8ms          | 1.01    | load.ugrid.CallbackTime.time_load_file_callback(200000)                                              |
|          | 2.93±0.08ms          | 3.04±0.09ms         | 1.04    | load.ugrid.DataRealisation.time_realise_data(10000)                                                  |
|          | 4.07±0.9ms           | 5.77±0.2ms          | ~1.42   | load.ugrid.DataRealisation.time_realise_data(200000)                                                 |
|          | 41.5±1ms             | 41.4±0.8ms          | 1.00    | load.ugrid.DataRealisationTime.time_realise_data(10000)                                              |
|          | 805±5ms              | 801±4ms             | 1.00    | load.ugrid.DataRealisationTime.time_realise_data(200000)                                             |
|          | 101±0.5ns            | 102±0.6ns           | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_AncillaryVariableMetadata_fields                |
|          | 897±10ns             | 881±5ns             | 0.98    | metadata_manager_factory.MetadataManagerFactory.time_AncillaryVariableMetadata_values                |
|          | 100±0.3ns            | 102±0.5ns           | 1.02    | metadata_manager_factory.MetadataManagerFactory.time_BaseMetadata_fields                             |
|          | 908±6ns              | 885±10ns            | 0.98    | metadata_manager_factory.MetadataManagerFactory.time_BaseMetadata_values                             |
|          | 101±0.6ns            | 103±4ns             | 1.02    | metadata_manager_factory.MetadataManagerFactory.time_CellMeasuresMetadata_fields                     |
|          | 988±4ns              | 999±10ns            | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_CellMeasuresMetadata_values                     |
|          | 101±0.3ns            | 103±2ns             | 1.02    | metadata_manager_factory.MetadataManagerFactory.time_CoordMetadata_fields                            |
|          | 1.07±0.01μs          | 1.08±0.02μs         | 1.02    | metadata_manager_factory.MetadataManagerFactory.time_CoordMetadata_values                            |
|          | 101±1ns              | 102±0.6ns           | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_CubeMetadata_fields                             |
|          | 998±5ns              | 992±20ns            | 0.99    | metadata_manager_factory.MetadataManagerFactory.time_CubeMetadata_values                             |
|          | 101±0.3ns            | 102±0.4ns           | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_DimCoordMetadata_fields                         |
|          | 1.14±0.01μs          | 1.14±0.01μs         | 0.99    | metadata_manager_factory.MetadataManagerFactory.time_DimCoordMetadata_values                         |
|          | 1.00±0.01μs          | 984±9ns             | 0.98    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(1)            |
|          | 6.69±0.07μs          | 6.87±0.05μs         | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(10)           |
|          | 63.4±0.1μs           | 65.3±0.8μs          | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(100)          |
|          | 992±7ns              | 992±10ns            | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(1)                         |
|          | 6.73±0.08μs          | 6.94±0.06μs         | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(10)                        |
|          | 62.8±0.2μs           | 65.5±0.6μs          | 1.04    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(100)                       |
|          | 1.04±0.02μs          | 1.05±0.01μs         | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(1)                  |
|          | 7.11±0.06μs          | 7.39±0.1μs          | 1.04    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(10)                 |
|          | 67.3±0.7μs           | 70.3±0.5μs          | 1.04    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(100)                |
|          | 1.09±0.01μs          | 1.11±0.02μs         | 1.02    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(1)                        |
|          | 7.44±0.05μs          | 7.78±0.1μs          | 1.05    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(10)                       |
|          | 71.0±0.7μs           | 74.0±0.6μs          | 1.04    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(100)                      |
|          | 1.04±0.01μs          | 1.04±0.01μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(1)                         |
|          | 7.04±0.04μs          | 7.38±0.05μs         | 1.05    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(10)                        |
|          | 66.6±1μs             | 69.6±0.5μs          | 1.04    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(100)                       |
|          | 1.14±0.03μs          | 1.13±0.01μs         | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(1)                     |
|          | 7.89±0.1μs           | 8.15±0.05μs         | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(10)                    |
|          | 75.5±0.6μs           | 79.1±0.5μs          | 1.05    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(100)                   |
|          | 108±1ns              | 107±0.7ns           | 1.00    | mixin.CFVariableMixin.time_get_attributes                                                            |
|          | 106±0.8ns            | 107±0.5ns           | 1.01    | mixin.CFVariableMixin.time_get_long_name                                                             |
|          | 962±8ns              | 966±8ns             | 1.00    | mixin.CFVariableMixin.time_get_metadata                                                              |
|          | 106±0.7ns            | 107±0.7ns           | 1.00    | mixin.CFVariableMixin.time_get_standard_name                                                         |
|          | 106±0.4ns            | 107±0.9ns           | 1.01    | mixin.CFVariableMixin.time_get_units                                                                 |
|          | 109±2ns              | 107±1ns             | 0.99    | mixin.CFVariableMixin.time_get_var_name                                                              |
|          | 692±20ns             | 701±7ns             | 1.01    | mixin.CFVariableMixin.time_set_attributes                                                            |
|          | 114±0.8ns            | 114±0.5ns           | 1.00    | mixin.CFVariableMixin.time_set_long_name                                                             |
|          | 3.52±0.05μs          | 3.54±0.04μs         | 1.00    | mixin.CFVariableMixin.time_set_metadata__dict                                                        |
|          | 4.45±0.04μs          | 4.48±0.06μs         | 1.00    | mixin.CFVariableMixin.time_set_metadata__metadata                                                    |
|          | 4.40±0.05μs          | 4.39±0.03μs         | 1.00    | mixin.CFVariableMixin.time_set_metadata__tuple                                                       |
|          | 548±9ns              | 540±3ns             | 0.99    | mixin.CFVariableMixin.time_set_standard_name                                                         |
|          | 421±4ns              | 419±4ns             | 1.00    | mixin.CFVariableMixin.time_set_units                                                                 |
|          | 439±4ns              | 431±5ns             | 0.98    | mixin.CFVariableMixin.time_set_var_name                                                              |
|          | 369±3ms              | 369±2ms             | 1.00    | plot.AuxSort.time_aux_sort                                                                           |
|          | 80.6±3ms             | 81.5±5ms            | 1.01    | regridding.CurvilinearRegridding.time_regrid_pic                                                     |
|          | 94.5±1ms             | 95.8±0.6ms          | 1.01    | regridding.HorizontalChunkedRegridding.time_regrid_area_w                                            |
|          | 49.2±2ms             | 49.9±1ms            | 1.01    | regridding.HorizontalChunkedRegridding.time_regrid_area_w_new_grid                                   |
|          | 3.84±0.08ms          | 4.36±0.09ms         | 1.14    | save.NetcdfSave.time_netcdf_save_cube(50, False)                                                     |
|          | 90.9±2ms             | 97.2±0.8ms          | 1.07    | save.NetcdfSave.time_netcdf_save_cube(50, True)                                                      |
|          | 55.0±0.6ms           | 55.1±0.6ms          | 1.00    | save.NetcdfSave.time_netcdf_save_cube(600, False)                                                    |
|          | 594±5ms              | 592±3ms             | 1.00    | save.NetcdfSave.time_netcdf_save_cube(600, True)                                                     |
|          | 101±0.5ns            | 103±0.9ns           | 1.01    | save.NetcdfSave.time_netcdf_save_mesh(50, False)                                                     |
|          | 75.3±0.7ms           | 81.2±0.6ms          | 1.08    | save.NetcdfSave.time_netcdf_save_mesh(50, True)                                                      |
|          | 101±0.3ns            | 103±0.8ns           | 1.02    | save.NetcdfSave.time_netcdf_save_mesh(600, False)                                                    |
|          | 522±2ms              | 523±3ms             | 1.00    | save.NetcdfSave.time_netcdf_save_mesh(600, True)                                                     |
|          | 35.9±1ms             | 42.1±0.9ms          | 1.17    | stats.PearsonR.time_lazy                                                                             |
|          | 19.2±0.5ms           | 19.3±0.3ms          | 1.01    | stats.PearsonR.time_real                                                                             |
|          | 24.6±0.7ms           | 23.6±0.6ms          | 0.96    | trajectory.TrajectoryInterpolation.time_trajectory_linear                                            |
|          | 61.1±0.7ms           | 60.4±0.4ms          | 0.99    | trajectory.TrajectoryInterpolation.time_trajectory_nearest                                           |

Benchmarks that have got worse:

| Change   | Before [3b0ab402]    | After [75e50bae]    |   Ratio | Benchmark (Parameter)                                      |
|----------|----------------------|---------------------|---------|------------------------------------------------------------|
| +        | 1.52±0.01ms          | 1.87±0.01ms         |    1.23 | experimental.ugrid.Connectivity.time_create(6)             |
| +        | 3.39±0.06ms          | 4.09±0.08ms         |    1.21 | experimental.ugrid.Connectivity.time_validate_indices(6)   |
| +        | 2.69±0.04ms          | 3.24±0.05ms         |    1.2  | experimental.ugrid.ConnectivityLazy.time_create(6)         |
| +        | 253±4μs              | 364±3μs             |    1.44 | experimental.ugrid.Mesh.time_add_connectivities(6)         |
| +        | 294±4μs              | 404±3μs             |    1.38 | experimental.ugrid.Mesh.time_create(6)                     |
| +        | 297±7μs              | 406±10μs            |    1.37 | experimental.ugrid.MeshLazy.time_add_connectivities(6)     |
| +        | 347±10μs             | 450±10μs            |    1.3  | experimental.ugrid.MeshLazy.time_create(6)                 |
| +        | 291±2ms              | 365±5ms             |    1.25 | load.StructuredFF.time_structured_load((2, 2, 1000), True) |
```

</details>

Generated by GHA run [`8078150715`](https://github.com/SciTools/iris/actions/runs/8078150715)


# :stopwatch: Performance Benchmark Report: 75e50bae

<details>
<summary>Performance shifts</summary>

```
| Change   | Before [3b0ab402]    | After [75e50bae]    |   Ratio | Benchmark (Parameter)                                        |
|----------|----------------------|---------------------|---------|--------------------------------------------------------------|
| +        | 1.55±0.02ms          | 1.92±0.07ms         |    1.24 | experimental.ugrid.Connectivity.time_create(6)               |
| +        | 2.34±0.03ms          | 2.85±0.05ms         |    1.22 | experimental.ugrid.Connectivity.time_location_lengths(6)     |
| +        | 3.41±0.04ms          | 4.18±0.06ms         |    1.22 | experimental.ugrid.Connectivity.time_validate_indices(6)     |
| +        | 2.72±0.04ms          | 3.31±0.1ms          |    1.22 | experimental.ugrid.ConnectivityLazy.time_create(6)           |
| +        | 2.63±0.06ms          | 3.16±0.1ms          |    1.2  | experimental.ugrid.ConnectivityLazy.time_location_lengths(6) |
| +        | 254±2μs              | 371±4μs             |    1.46 | experimental.ugrid.Mesh.time_add_connectivities(6)           |
| +        | 304±4μs              | 418±5μs             |    1.37 | experimental.ugrid.Mesh.time_create(6)                       |
| +        | 302±10μs             | 416±10μs            |    1.38 | experimental.ugrid.MeshLazy.time_add_connectivities(6)       |
| +        | 345±8μs              | 472±20μs            |    1.37 | experimental.ugrid.MeshLazy.time_create(6)                   |
| +        | 296±2ms              | 365±4ms             |    1.23 | load.StructuredFF.time_structured_load((2, 2, 1000), True)   |
```

</details>

<details>
<summary>Full benchmark results</summary>

```

Benchmarks that have stayed the same:

| Change   | Before [3b0ab402]    | After [75e50bae]    | Ratio   | Benchmark (Parameter)                                                                                |
|----------|----------------------|---------------------|---------|------------------------------------------------------------------------------------------------------|
|          | n/a                  | n/a                 | n/a     | aux_factory.FactoryCommon.time_create                                                                |
|          | 4.43±0.05μs          | 4.42±0.05μs         | 1.00    | aux_factory.HybridHeightFactory.time_create                                                          |
|          | 4.91±0.05μs          | 4.94±0.06μs         | 1.01    | coords.AncillaryVariable.time_create                                                                 |
|          | 426±3ns              | 418±8ns             | 0.98    | coords.AuxCoord.time_bounds                                                                          |
|          | 8.90±0.03μs          | 8.97±0.1μs          | 1.01    | coords.AuxCoord.time_create                                                                          |
|          | 421±10ns             | 403±1ns             | 0.96    | coords.AuxCoord.time_points                                                                          |
|          | 234±20μs             | 246±20μs            | 1.05    | coords.AuxCoordLazy.time_bounds                                                                      |
|          | 13.0±0.5μs           | 13.2±0.5μs          | 1.01    | coords.AuxCoordLazy.time_create                                                                      |
|          | 234±20μs             | 244±20μs            | 1.04    | coords.AuxCoordLazy.time_points                                                                      |
|          | 5.38±0.1μs           | 5.34±0.06μs         | 0.99    | coords.CellMeasure.time_create                                                                       |
|          | 1.11±0.03μs          | 1.09±0.01μs         | 0.98    | coords.CellMethod.time_create                                                                        |
|          | n/a                  | n/a                 | n/a     | coords.CoordCommon.time_create                                                                       |
|          | 111±1μs              | 111±1μs             | 1.00    | coords.DimCoord.time_create                                                                          |
|          | 31.2±0.6μs           | 31.5±0.9μs          | 1.01    | coords.DimCoord.time_regular                                                                         |
|          | 393±5ms              | 396±5ms             | 1.01    | cube.Aggregation.time_aggregated_by                                                                  |
|          | 59.6±0.8μs           | 58.7±0.6μs          | 0.99    | cube.AncillaryVariable.time_add                                                                      |
|          | 11.8±0.2μs           | 11.4±0.2μs          | 0.96    | cube.AncillaryVariable.time_create                                                                   |
|          | 66.8±0.9μs           | 66.9±0.8μs          | 1.00    | cube.AuxCoord.time_add                                                                               |
|          | 9.79±0.2μs           | 9.52±0.2μs          | 0.97    | cube.AuxCoord.time_create                                                                            |
|          | 5.96±0.06μs          | 6.04±0.08μs         | 1.01    | cube.AuxCoord.time_return_coord_dims                                                                 |
|          | 4.43±0.08μs          | 4.47±0.06μs         | 1.01    | cube.AuxCoord.time_return_coords                                                                     |
|          | 40.8±0.6μs           | 40.3±0.3μs          | 0.99    | cube.AuxFactory.time_add                                                                             |
|          | 12.8±0.4μs           | 12.4±0.3μs          | 0.97    | cube.AuxFactory.time_create                                                                          |
|          | 59.8±0.9μs           | 59.1±0.6μs          | 0.99    | cube.CellMeasure.time_add                                                                            |
|          | 11.8±0.3μs           | 11.5±0.3μs          | 0.97    | cube.CellMeasure.time_create                                                                         |
|          | 53.1±0.6μs           | 52.0±0.4μs          | 0.98    | cube.CellMethod.time_add                                                                             |
|          | 7.24±0.09μs          | 7.16±0.06μs         | 0.99    | cube.CellMethod.time_create                                                                          |
|          | n/a                  | n/a                 | n/a     | cube.ComponentCommon.time_add                                                                        |
|          | n/a                  | n/a                 | n/a     | cube.ComponentCommon.time_create                                                                     |
|          | 131±1ms              | 131±1ms             | 1.00    | cube.Concatenate.time_concatenate                                                                    |
|          | 6.71±0.08μs          | 6.75±0.05μs         | 1.01    | cube.Cube.time_basic                                                                                 |
|          | 57.9±0.4ns           | 58.1±0.3ns          | 1.00    | cube.Cube.time_rename                                                                                |
|          | 62.2±0.9μs           | 61.6±0.3μs          | 0.99    | cube.Equality.time_equality                                                                          |
|          | 349±9ms              | 342±5ms             | 0.98    | cube.Merge.time_merge                                                                                |
|          | 31.1±3μs             | 33.3±2μs            | 1.07    | cube.MeshCoord.time_add(10000)                                                                       |
|          | 32.6±2μs             | 31.5±1μs            | 0.97    | cube.MeshCoord.time_add(1000000)                                                                     |
|          | 29.4±2μs             | 28.0±1μs            | 0.95    | cube.MeshCoord.time_add(6)                                                                           |
|          | 20.0±0.3μs           | 19.6±0.2μs          | 0.98    | cube.MeshCoord.time_create(10000)                                                                    |
|          | 19.6±0.7μs           | 19.3±0.2μs          | 0.99    | cube.MeshCoord.time_create(1000000)                                                                  |
|          | 19.0±0.3μs           | 18.9±0.3μs          | 0.99    | cube.MeshCoord.time_create(6)                                                                        |
|          | 64.1±5μs             | 62.1±4μs            | 0.97    | cube.MeshCoord.time_remove(10000)                                                                    |
|          | 67.2±5μs             | 66.3±3μs            | 0.99    | cube.MeshCoord.time_remove(1000000)                                                                  |
|          | 63.6±5μs             | 61.7±3μs            | 0.97    | cube.MeshCoord.time_remove(6)                                                                        |
|          | 2.21±0.4ms           | 2.95±0.4ms          | ~1.34   | experimental.ugrid.Connectivity.time_create(1000000)                                                 |
|          | 603±8ns              | 612±3ns             | 1.02    | experimental.ugrid.Connectivity.time_indices(1000000)                                                |
|          | 609±5ns              | 619±10ns            | 1.02    | experimental.ugrid.Connectivity.time_indices(6)                                                      |
|          | 23.7±2ms             | 24.1±2ms            | 1.02    | experimental.ugrid.Connectivity.time_location_lengths(1000000)                                       |
|          | 23.5±3ms             | 29.0±3ms            | ~1.23   | experimental.ugrid.Connectivity.time_validate_indices(1000000)                                       |
|          | 3.99±0.08ms          | 4.77±0.2ms          | 1.20    | experimental.ugrid.ConnectivityLazy.time_create(1000000)                                             |
|          | 260±10μs             | 301±20μs            | 1.16    | experimental.ugrid.ConnectivityLazy.time_indices(1000000)                                            |
|          | 245±6μs              | 272±10μs            | 1.11    | experimental.ugrid.ConnectivityLazy.time_indices(6)                                                  |
|          | 20.1±0.3ms           | 20.9±0.7ms          | 1.04    | experimental.ugrid.ConnectivityLazy.time_location_lengths(1000000)                                   |
|          | 23.1±0.4ms           | 24.0±1ms            | 1.04    | experimental.ugrid.ConnectivityLazy.time_validate_indices(1000000)                                   |
|          | 3.84±0.09ms          | 4.45±0.1ms          | 1.16    | experimental.ugrid.ConnectivityLazy.time_validate_indices(6)                                         |
|          | 12.7±0.1μs           | 12.8±0.2μs          | 1.01    | experimental.ugrid.Mesh.time_add_connectivities(1000000)                                             |
|          | 4.86±0.06μs          | 4.97±0.02μs         | 1.02    | experimental.ugrid.Mesh.time_add_coords(1000000)                                                     |
|          | 4.91±0.03μs          | 4.98±0.07μs         | 1.01    | experimental.ugrid.Mesh.time_add_coords(6)                                                           |
|          | 5.12±0.06μs          | 5.07±0.05μs         | 0.99    | experimental.ugrid.Mesh.time_connectivities(1000000)                                                 |
|          | 5.08±0.03μs          | 5.10±0.04μs         | 1.00    | experimental.ugrid.Mesh.time_connectivities(6)                                                       |
|          | 5.87±0.06μs          | 5.85±0.06μs         | 1.00    | experimental.ugrid.Mesh.time_coords(1000000)                                                         |
|          | 5.92±0.07μs          | 5.90±0.08μs         | 1.00    | experimental.ugrid.Mesh.time_coords(6)                                                               |
|          | 46.2±0.6μs           | 47.7±0.4μs          | 1.03    | experimental.ugrid.Mesh.time_create(1000000)                                                         |
|          | 81.5±2ms             | 86.6±3ms            | 1.06    | experimental.ugrid.Mesh.time_eq(1000000)                                                             |
|          | 277±5μs              | 282±7μs             | 1.02    | experimental.ugrid.Mesh.time_eq(6)                                                                   |
|          | 5.00±0.04μs          | 4.95±0.09μs         | 0.99    | experimental.ugrid.Mesh.time_remove_connectivities(1000000)                                          |
|          | 4.96±0.04μs          | 4.97±0.03μs         | 1.00    | experimental.ugrid.Mesh.time_remove_connectivities(6)                                                |
|          | 7.39±0.06μs          | 7.32±0.1μs          | 0.99    | experimental.ugrid.Mesh.time_remove_coords(1000000)                                                  |
|          | 7.37±0.05μs          | 7.41±0.07μs         | 1.00    | experimental.ugrid.Mesh.time_remove_coords(6)                                                        |
|          | 10.6±0.09μs          | 11.3±0.1μs          | 1.06    | experimental.ugrid.MeshCoord.time_bounds(10000)                                                      |
|          | 126±2ms              | 128±2ms             | 1.01    | experimental.ugrid.MeshCoord.time_bounds(1000000)                                                    |
|          | 5.35±0.04μs          | 5.42±0.08μs         | 1.01    | experimental.ugrid.MeshCoord.time_bounds(6)                                                          |
|          | 3.38±0.02ms          | 3.83±0.07ms         | 1.13    | experimental.ugrid.MeshCoord.time_create(10000)                                                      |
|          | 3.37±0.05ms          | 3.74±0.05ms         | 1.11    | experimental.ugrid.MeshCoord.time_create(1000000)                                                    |
|          | 204±4μs              | 207±3μs             | 1.01    | experimental.ugrid.MeshCoord.time_create(6)                                                          |
|          | 3.73±0.08μs          | 3.82±0.06μs         | 1.03    | experimental.ugrid.MeshCoord.time_points(10000)                                                      |
|          | 4.32±0.08μs          | 4.45±0.08μs         | 1.03    | experimental.ugrid.MeshCoord.time_points(1000000)                                                    |
|          | 2.95±0.04μs          | 2.97±0.07μs         | 1.01    | experimental.ugrid.MeshCoord.time_points(6)                                                          |
|          | 7.69±0.1ms           | 8.35±0.2ms          | 1.09    | experimental.ugrid.MeshCoordLazy.time_bounds(10000)                                                  |
|          | 128±3ms              | 131±5ms             | 1.02    | experimental.ugrid.MeshCoordLazy.time_bounds(1000000)                                                |
|          | 13.5±0.6μs           | 13.7±0.8μs          | 1.01    | experimental.ugrid.MeshCoordLazy.time_bounds(6)                                                      |
|          | 3.42±0.06ms          | 3.78±0.08ms         | 1.10    | experimental.ugrid.MeshCoordLazy.time_create(10000)                                                  |
|          | 3.44±0.06ms          | 3.84±0.06ms         | 1.12    | experimental.ugrid.MeshCoordLazy.time_create(1000000)                                                |
|          | 248±10μs             | 263±20μs            | 1.06    | experimental.ugrid.MeshCoordLazy.time_create(6)                                                      |
|          | 2.78±0.1ms           | 2.86±0.1ms          | 1.03    | experimental.ugrid.MeshCoordLazy.time_points(10000)                                                  |
|          | 5.08±0.2ms           | 5.12±0.1ms          | 1.01    | experimental.ugrid.MeshCoordLazy.time_points(1000000)                                                |
|          | 9.99±0.4μs           | 9.82±0.5μs          | 0.98    | experimental.ugrid.MeshCoordLazy.time_points(6)                                                      |
|          | 33.3±1μs             | 33.8±1μs            | 1.01    | experimental.ugrid.MeshLazy.time_add_connectivities(1000000)                                         |
|          | 20.4±0.9μs           | 21.8±3μs            | 1.07    | experimental.ugrid.MeshLazy.time_add_coords(1000000)                                                 |
|          | 19.8±1μs             | 21.9±2μs            | 1.10    | experimental.ugrid.MeshLazy.time_add_coords(6)                                                       |
|          | 17.3±0.6μs           | 20.6±2μs            | 1.19    | experimental.ugrid.MeshLazy.time_connectivities(1000000)                                             |
|          | 19.1±2μs             | 20.6±1μs            | 1.08    | experimental.ugrid.MeshLazy.time_connectivities(6)                                                   |
|          | 20.2±2μs             | 19.9±0.9μs          | 0.98    | experimental.ugrid.MeshLazy.time_coords(1000000)                                                     |
|          | 21.1±1μs             | 23.2±2μs            | 1.10    | experimental.ugrid.MeshLazy.time_coords(6)                                                           |
|          | 83.7±8μs             | 80.5±7μs            | 0.96    | experimental.ugrid.MeshLazy.time_create(1000000)                                                     |
|          | 84.0±3ms             | 87.8±3ms            | 1.05    | experimental.ugrid.MeshLazy.time_eq(1000000)                                                         |
|          | 386±10μs             | 388±20μs            | 1.01    | experimental.ugrid.MeshLazy.time_eq(6)                                                               |
|          | 19.1±1μs             | 21.3±2μs            | 1.11    | experimental.ugrid.MeshLazy.time_remove_connectivities(1000000)                                      |
|          | 21.5±2μs             | 21.2±1μs            | 0.98    | experimental.ugrid.MeshLazy.time_remove_connectivities(6)                                            |
|          | 32.2±1μs             | 35.2±3μs            | 1.09    | experimental.ugrid.MeshLazy.time_remove_coords(1000000)                                              |
|          | 33.5±2μs             | 36.6±2μs            | 1.09    | experimental.ugrid.MeshLazy.time_remove_coords(6)                                                    |
|          | n/a                  | n/a                 | n/a     | experimental.ugrid.UGridCommon.time_create(1000000)                                                  |
|          | n/a                  | n/a                 | n/a     | experimental.ugrid.UGridCommon.time_create(6)                                                        |
|          | 498±4ns              | 504±3ns             | 1.01    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(50)               |
|          | 251±2ms              | 249±1ms             | 0.99    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(500)              |
|          | 12.6±0.2ms           | 14.4±0.3ms          | 1.14    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(50)            |
|          | 14.3±0.3ms           | 16.3±0.5ms          | 1.14    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(500)           |
|          | 5.0                  | 5.0                 | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(50)  |
|          | 5.0                  | 5.0                 | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(500) |
|          | 139±5ms              | 149±4ms             | 1.07    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(50)          |
|          | 760±8ms              | 763±10ms            | 1.00    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(500)         |
|          | 95.4±1ms             | 103±3ms             | 1.08    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(50)                              |
|          | 705±4ms              | 708±20ms            | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(500)                             |
|          | 2.1752849999999997   | 2.1752849999999997  | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(50)                   |
|          | 216.01528499999998   | 216.01528499999998  | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(500)                  |
|          | 615±10μs             | 606±9μs             | 0.98    | import_iris.Iris.time__concatenate                                                                   |
|          | 184±4μs              | 179±6μs             | 0.97    | import_iris.Iris.time__constraints                                                                   |
|          | 107±2μs              | 107±2μs             | 0.99    | import_iris.Iris.time__data_manager                                                                  |
|          | 86.6±0.5μs           | 86.1±0.4μs          | 0.99    | import_iris.Iris.time__deprecation                                                                   |
|          | 109±1μs              | 109±0.7μs           | 1.00    | import_iris.Iris.time__lazy_data                                                                     |
|          | 835±30μs             | 842±20μs            | 1.01    | import_iris.Iris.time__merge                                                                         |
|          | 71.8±0.5μs           | 72.4±0.3μs          | 1.01    | import_iris.Iris.time__representation                                                                |
|          | 477±20μs             | 469±8μs             | 0.98    | import_iris.Iris.time_analysis                                                                       |
|          | 131±2μs              | 133±2μs             | 1.02    | import_iris.Iris.time_analysis__area_weighted                                                        |
|          | 100±0.8μs            | 101±1μs             | 1.01    | import_iris.Iris.time_analysis__grid_angles                                                          |
|          | 229±3μs              | 231±4μs             | 1.01    | import_iris.Iris.time_analysis__interpolation                                                        |
|          | 181±4μs              | 181±3μs             | 1.00    | import_iris.Iris.time_analysis__regrid                                                               |
|          | 106±1μs              | 106±1μs             | 1.00    | import_iris.Iris.time_analysis__scipy_interpolate                                                    |
|          | 128±2μs              | 127±2μs             | 0.99    | import_iris.Iris.time_analysis_calculus                                                              |
|          | 292±4μs              | 289±3μs             | 0.99    | import_iris.Iris.time_analysis_cartography                                                           |
|          | 86.0±2μs             | 85.0±0.7μs          | 0.99    | import_iris.Iris.time_analysis_geomerty                                                              |
|          | 206±3μs              | 207±3μs             | 1.00    | import_iris.Iris.time_analysis_maths                                                                 |
|          | 91.2±0.4μs           | 93.3±1μs            | 1.02    | import_iris.Iris.time_analysis_stats                                                                 |
|          | 176±4μs              | 174±6μs             | 0.99    | import_iris.Iris.time_analysis_trajectory                                                            |
|          | 307±5μs              | 301±4μs             | 0.98    | import_iris.Iris.time_aux_factory                                                                    |
|          | 80.6±0.4μs           | 81.2±0.6μs          | 1.01    | import_iris.Iris.time_common                                                                         |
|          | 167±3μs              | 168±2μs             | 1.01    | import_iris.Iris.time_common_lenient                                                                 |
|          | 933±30μs             | 958±20μs            | 1.03    | import_iris.Iris.time_common_metadata                                                                |
|          | 129±3μs              | 130±1μs             | 1.00    | import_iris.Iris.time_common_mixin                                                                   |
|          | 1.08±0.01ms          | 1.10±0.02ms         | 1.02    | import_iris.Iris.time_common_resolve                                                                 |
|          | 194±3μs              | 195±3μs             | 1.01    | import_iris.Iris.time_config                                                                         |
|          | 106±0.7μs            | 107±1μs             | 1.01    | import_iris.Iris.time_coord_categorisation                                                           |
|          | 359±10μs             | 369±6μs             | 1.03    | import_iris.Iris.time_coord_systems                                                                  |
|          | 714±8μs              | 724±20μs            | 1.01    | import_iris.Iris.time_coords                                                                         |
|          | 687±20μs             | 717±30μs            | 1.04    | import_iris.Iris.time_cube                                                                           |
|          | 211±4μs              | 217±2μs             | 1.03    | import_iris.Iris.time_exceptions                                                                     |
|          | 72.4±0.4μs           | 73.9±0.6μs          | 1.02    | import_iris.Iris.time_experimental                                                                   |
|          | 197±3μs              | 197±3μs             | 1.00    | import_iris.Iris.time_fileformats                                                                    |
|          | 238±4μs              | 243±10μs            | 1.02    | import_iris.Iris.time_fileformats__ff                                                                |
|          | 2.61±0.09ms          | 2.64±0.2ms          | 1.01    | import_iris.Iris.time_fileformats__ff_cross_references                                               |
|          | 73.9±0.3μs           | 74.1±0.5μs          | 1.00    | import_iris.Iris.time_fileformats__pp_lbproc_pairs                                                   |
|          | 108±1μs              | 109±2μs             | 1.01    | import_iris.Iris.time_fileformats_abf                                                                |
|          | 353±8μs              | 358±20μs            | 1.01    | import_iris.Iris.time_fileformats_cf                                                                 |
|          | 6.43±0.1ms           | 6.29±0.3ms          | 0.98    | import_iris.Iris.time_fileformats_dot                                                                |
|          | 69.0±0.9μs           | 69.5±0.6μs          | 1.01    | import_iris.Iris.time_fileformats_name                                                               |
|          | 240±3μs              | 241±3μs             | 1.00    | import_iris.Iris.time_fileformats_name_loaders                                                       |
|          | 114±1μs              | 116±2μs             | 1.01    | import_iris.Iris.time_fileformats_netcdf                                                             |
|          | 115±2μs              | 115±1μs             | 0.99    | import_iris.Iris.time_fileformats_nimrod                                                             |
|          | 191±3μs              | 191±2μs             | 1.00    | import_iris.Iris.time_fileformats_nimrod_load_rules                                                  |
|          | 726±10μs             | 716±20μs            | 0.99    | import_iris.Iris.time_fileformats_pp                                                                 |
|          | 162±0.9μs            | 162±2μs             | 1.00    | import_iris.Iris.time_fileformats_pp_load_rules                                                      |
|          | 123±0.9μs            | 123±0.9μs           | 1.00    | import_iris.Iris.time_fileformats_pp_save_rules                                                      |
|          | 470±10μs             | 447±5μs             | 0.95    | import_iris.Iris.time_fileformats_rules                                                              |
|          | 207±3μs              | 204±2μs             | 0.99    | import_iris.Iris.time_fileformats_structured_array_identification                                    |
|          | 79.2±0.4μs           | 81.3±0.6μs          | 1.03    | import_iris.Iris.time_fileformats_um                                                                 |
|          | 156±3μs              | 156±2μs             | 1.00    | import_iris.Iris.time_fileformats_um__fast_load                                                      |
|          | 139±2μs              | 138±2μs             | 0.99    | import_iris.Iris.time_fileformats_um__fast_load_structured_fields                                    |
|          | 71.3±0.3μs           | 71.9±1μs            | 1.01    | import_iris.Iris.time_fileformats_um__ff_replacement                                                 |
|          | 78.8±0.8μs           | 79.5±0.6μs          | 1.01    | import_iris.Iris.time_fileformats_um__optimal_array_structuring                                      |
|          | 900±20μs             | 867±8μs             | 0.96    | import_iris.Iris.time_fileformats_um_cf_map                                                          |
|          | 130±0.6μs            | 130±2μs             | 1.00    | import_iris.Iris.time_io                                                                             |
|          | 174±3μs              | 172±4μs             | 0.99    | import_iris.Iris.time_io_format_picker                                                               |
|          | 200±4μs              | 199±2μs             | 0.99    | import_iris.Iris.time_iris                                                                           |
|          | 121±1μs              | 123±1μs             | 1.02    | import_iris.Iris.time_iterate                                                                        |
|          | 8.47±0.1ms           | 8.40±0.09ms         | 0.99    | import_iris.Iris.time_palette                                                                        |
|          | 308±1μs              | 305±3μs             | 0.99    | import_iris.Iris.time_plot                                                                           |
|          | 94.2±1μs             | 94.4±0.6μs          | 1.00    | import_iris.Iris.time_quickplot                                                                      |
|          | 2.20±0.2ms           | 2.04±0.2ms          | 0.93    | import_iris.Iris.time_std_names                                                                      |
|          | 1.72±0.02ms          | 1.74±0.01ms         | 1.01    | import_iris.Iris.time_symbols                                                                        |
|          | 112±0.8ms            | 113±3ms             | 1.01    | import_iris.Iris.time_tests                                                                          |
|          | 223±2μs              | 223±6μs             | 1.00    | import_iris.Iris.time_third_party_cartopy                                                            |
|          | 5.22±0.1ms           | 5.26±0.3ms          | 1.01    | import_iris.Iris.time_third_party_cf_units                                                           |
|          | 103±0.6μs            | 105±1μs             | 1.02    | import_iris.Iris.time_third_party_cftime                                                             |
|          | 2.89±0.1ms           | 2.81±0.1ms          | 0.97    | import_iris.Iris.time_third_party_matplotlib                                                         |
|          | 1.02±0.01ms          | 1.02±0.01ms         | 1.00    | import_iris.Iris.time_third_party_numpy                                                              |
|          | 153±2μs              | 153±3μs             | 1.00    | import_iris.Iris.time_third_party_scipy                                                              |
|          | 95.0±0.8μs           | 95.4±2μs            | 1.00    | import_iris.Iris.time_time                                                                           |
|          | 292±2μs              | 291±8μs             | 0.99    | import_iris.Iris.time_util                                                                           |
|          | 82.8±0.6μs           | 83.8±1μs            | 1.01    | iterate.IZip.time_izip                                                                               |
|          | 7.67±0.5ms           | 8.43±0.3ms          | 1.10    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'FF')                                           |
|          | 25.0±0.4ms           | 25.0±0.5ms          | 1.00    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'NetCDF')                                       |
|          | 8.56±0.1ms           | 8.94±0.2ms          | 1.04    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'PP')                                           |
|          | 7.88±0.2ms           | 8.12±0.3ms          | 1.03    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'FF')                                            |
|          | 22.0±0.5ms           | 21.6±0.4ms          | 0.98    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'NetCDF')                                        |
|          | 8.78±0.2ms           | 9.01±0.3ms          | 1.03    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'PP')                                            |
|          | 1.28±0.02s           | 1.37±0.01s          | 1.06    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'FF')                                             |
|          | 21.1±0.4ms           | 21.0±0.5ms          | 1.00    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'NetCDF')                                         |
|          | 1.45±0.01s           | 1.52±0.02s          | 1.05    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'PP')                                             |
|          | 1.29±0.01s           | 1.36±0.01s          | 1.05    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'FF')                                              |
|          | 20.9±0.2ms           | 21.0±0.8ms          | 1.00    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'NetCDF')                                          |
|          | 1.45±0.02s           | 1.52±0.02s          | 1.05    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'PP')                                              |
|          | 3.93±0.2ms           | 3.92±0.2ms          | 1.00    | load.LoadAndRealise.time_load((50, 50, 2), False, 'FF')                                              |
|          | 19.8±0.6ms           | 20.2±0.2ms          | 1.02    | load.LoadAndRealise.time_load((50, 50, 2), False, 'NetCDF')                                          |
|          | 4.04±0.1ms           | 4.32±0.2ms          | 1.07    | load.LoadAndRealise.time_load((50, 50, 2), False, 'PP')                                              |
|          | 3.79±0.1ms           | 3.90±0.1ms          | 1.03    | load.LoadAndRealise.time_load((50, 50, 2), True, 'FF')                                               |
|          | 20.0±0.2ms           | 20.5±0.5ms          | 1.02    | load.LoadAndRealise.time_load((50, 50, 2), True, 'NetCDF')                                           |
|          | 3.97±0.08ms          | 4.18±0.1ms          | 1.05    | load.LoadAndRealise.time_load((50, 50, 2), True, 'PP')                                               |
|          | 35.1±3ms             | 37.4±4ms            | 1.07    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'FF')                                        |
|          | 20.1±0.5ms           | 21.2±0.7ms          | 1.05    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'NetCDF')                                    |
|          | 13.5±2ms             | 14.2±1ms            | 1.05    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'PP')                                        |
|          | 26.1±0.5ms           | 26.3±0.7ms          | 1.01    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'FF')                                         |
|          | 73.2±1ms             | 73.4±1ms            | 1.00    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'NetCDF')                                     |
|          | 26.6±1ms             | 27.2±2ms            | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'PP')                                         |
|          | 402±7ms              | 466±7ms             | 1.16    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'FF')                                          |
|          | 3.24±0.04ms          | 3.30±0.2ms          | 1.02    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'NetCDF')                                      |
|          | 411±4ms              | 470±6ms             | 1.14    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'PP')                                          |
|          | 410±2ms              | 472±4ms             | 1.15    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'FF')                                           |
|          | 3.31±0.1ms           | 3.25±0.06ms         | 0.98    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'NetCDF')                                       |
|          | 417±4ms              | 465±4ms             | 1.12    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'PP')                                           |
|          | 1.55±0.1ms           | 1.69±0.1ms          | 1.09    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'FF')                                           |
|          | 3.21±0.06ms          | 3.38±0.1ms          | 1.05    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'NetCDF')                                       |
|          | 1.54±0.09ms          | 1.70±0.1ms          | 1.11    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'PP')                                           |
|          | 1.56±0.1ms           | 1.73±0.07ms         | 1.11    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'FF')                                            |
|          | 3.25±0.09ms          | 3.45±0.2ms          | 1.06    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'NetCDF')                                        |
|          | 1.55±0.09ms          | 1.72±0.1ms          | 1.10    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'PP')                                            |
|          | 337±4ms              | 336±3ms             | 1.00    | load.ManyVars.time_many_var_load                                                                     |
|          | 8.02±0.2ms           | 8.16±0.1ms          | 1.02    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'FF')                                     |
|          | 9.05±0.09ms          | 8.98±0.2ms          | 0.99    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'PP')                                     |
|          | 1.31±0.02s           | 1.36±0.01s          | 1.04    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'FF')                                       |
|          | 1.47±0.02s           | 1.54±0.01s          | 1.04    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'PP')                                       |
|          | 3.76±0.03ms          | 3.88±0.09ms         | 1.03    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'FF')                                          |
|          | 4.14±0.1ms           | 4.16±0.04ms         | 1.00    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'PP')                                          |
|          | 7.97±0.2ms           | 8.16±0.2ms          | 1.02    | load.StructuredFF.time_structured_load((1280, 960, 5), False)                                        |
|          | 4.49±0.2ms           | 4.75±0.1ms          | 1.06    | load.StructuredFF.time_structured_load((1280, 960, 5), True)                                         |
|          | 1.28±0.02s           | 1.36±0.02s          | 1.06    | load.StructuredFF.time_structured_load((2, 2, 1000), False)                                          |
|          | 3.87±0.1ms           | 3.88±0.07ms         | 1.00    | load.StructuredFF.time_structured_load((2, 2, 2), False)                                             |
|          | 3.63±0.1ms           | 3.58±0.06ms         | 0.98    | load.StructuredFF.time_structured_load((2, 2, 2), True)                                              |
|          | 135±2ms              | 143±1ms             | 1.06    | load.TimeConstraint.time_time_constraint(20, 'FF')                                                   |
|          | 23.8±0.5ms           | 23.8±0.3ms          | 1.00    | load.TimeConstraint.time_time_constraint(20, 'NetCDF')                                               |
|          | 149±2ms              | 157±1ms             | 1.06    | load.TimeConstraint.time_time_constraint(20, 'PP')                                                   |
|          | 28.4±0.3ms           | 29.3±1ms            | 1.03    | load.TimeConstraint.time_time_constraint(3, 'FF')                                                    |
|          | 23.8±0.5ms           | 23.3±0.4ms          | 0.98    | load.TimeConstraint.time_time_constraint(3, 'NetCDF')                                                |
|          | 31.0±0.8ms           | 31.7±0.6ms          | 1.02    | load.TimeConstraint.time_time_constraint(3, 'PP')                                                    |
|          | 18.4±0.5ms           | 18.8±0.3ms          | 1.03    | load.ugrid.BasicLoading.time_load_file(1)                                                            |
|          | 40.3±0.9ms           | 42.6±0.4ms          | 1.06    | load.ugrid.BasicLoading.time_load_file(200000)                                                       |
|          | 14.9±0.4ms           | 15.6±0.3ms          | 1.05    | load.ugrid.BasicLoading.time_load_mesh(1)                                                            |
|          | 23.0±0.5ms           | 23.9±0.5ms          | 1.04    | load.ugrid.BasicLoading.time_load_mesh(200000)                                                       |
|          | 18.2±0.4ms           | 19.5±0.2ms          | 1.07    | load.ugrid.BasicLoadingTime.time_load_file(1)                                                        |
|          | 20.8±0.3ms           | 21.7±0.3ms          | 1.04    | load.ugrid.BasicLoadingTime.time_load_file(200000)                                                   |
|          | 14.3±0.5ms           | 15.3±0.2ms          | 1.07    | load.ugrid.BasicLoadingTime.time_load_mesh(1)                                                        |
|          | 17.6±0.4ms           | 18.2±0.2ms          | 1.03    | load.ugrid.BasicLoadingTime.time_load_mesh(200000)                                                   |
|          | 19.5±0.6ms           | 19.9±0.5ms          | 1.02    | load.ugrid.Callback.time_load_file_callback(1)                                                       |
|          | 47.1±0.5ms           | 50.6±0.6ms          | 1.07    | load.ugrid.Callback.time_load_file_callback(200000)                                                  |
|          | 19.2±0.3ms           | 20.2±0.5ms          | 1.06    | load.ugrid.CallbackTime.time_load_file_callback(1)                                                   |
|          | 22.6±0.3ms           | 23.7±0.5ms          | 1.05    | load.ugrid.CallbackTime.time_load_file_callback(200000)                                              |
|          | 3.04±0.05ms          | 3.25±0.06ms         | 1.07    | load.ugrid.DataRealisation.time_realise_data(10000)                                                  |
|          | 5.95±0.2ms           | 6.10±0.1ms          | 1.03    | load.ugrid.DataRealisation.time_realise_data(200000)                                                 |
|          | 43.7±0.8ms           | 43.2±1ms            | 0.99    | load.ugrid.DataRealisationTime.time_realise_data(10000)                                              |
|          | 840±10ms             | 830±10ms            | 0.99    | load.ugrid.DataRealisationTime.time_realise_data(200000)                                             |
|          | 101±0.5ns            | 104±1ns             | 1.03    | metadata_manager_factory.MetadataManagerFactory.time_AncillaryVariableMetadata_fields                |
|          | 901±3ns              | 893±7ns             | 0.99    | metadata_manager_factory.MetadataManagerFactory.time_AncillaryVariableMetadata_values                |
|          | 102±0.5ns            | 102±1ns             | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_BaseMetadata_fields                             |
|          | 913±6ns              | 901±8ns             | 0.99    | metadata_manager_factory.MetadataManagerFactory.time_BaseMetadata_values                             |
|          | 101±1ns              | 103±1ns             | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_CellMeasuresMetadata_fields                     |
|          | 995±5ns              | 996±3ns             | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_CellMeasuresMetadata_values                     |
|          | 101±0.4ns            | 103±1ns             | 1.02    | metadata_manager_factory.MetadataManagerFactory.time_CoordMetadata_fields                            |
|          | 1.07±0μs             | 1.07±0.02μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_CoordMetadata_values                            |
|          | 101±0.3ns            | 102±0.4ns           | 1.02    | metadata_manager_factory.MetadataManagerFactory.time_CubeMetadata_fields                             |
|          | 1.03±0.03μs          | 994±8ns             | 0.96    | metadata_manager_factory.MetadataManagerFactory.time_CubeMetadata_values                             |
|          | 101±0.7ns            | 102±2ns             | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_DimCoordMetadata_fields                         |
|          | 1.15±0.01μs          | 1.14±0.02μs         | 0.98    | metadata_manager_factory.MetadataManagerFactory.time_DimCoordMetadata_values                         |
|          | 1.04±0.02μs          | 1.00±0.01μs         | 0.97    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(1)            |
|          | 6.85±0.2μs           | 6.85±0.05μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(10)           |
|          | 63.6±1μs             | 64.4±1μs            | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(100)          |
|          | 1.00±0.01μs          | 1000±10ns           | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(1)                         |
|          | 6.80±0.03μs          | 6.79±0.08μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(10)                        |
|          | 63.1±0.1μs           | 64.1±1μs            | 1.02    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(100)                       |
|          | 1.09±0.03μs          | 1.04±0.01μs         | 0.95    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(1)                  |
|          | 7.25±0.2μs           | 7.31±0.07μs         | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(10)                 |
|          | 67.7±0.2μs           | 70.1±0.6μs          | 1.04    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(100)                |
|          | 1.09±0.01μs          | 1.08±0.01μs         | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(1)                        |
|          | 7.56±0.2μs           | 7.90±0.1μs          | 1.05    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(10)                       |
|          | 71.2±0.5μs           | 74.1±0.9μs          | 1.04    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(100)                      |
|          | 1.06±0.02μs          | 1.04±0.01μs         | 0.98    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(1)                         |
|          | 7.23±0.3μs           | 7.36±0.1μs          | 1.02    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(10)                        |
|          | 67.3±3μs             | 69.8±0.6μs          | 1.04    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(100)                       |
|          | 1.11±0.01μs          | 1.12±0.01μs         | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(1)                     |
|          | 7.97±0.05μs          | 8.20±0.1μs          | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(10)                    |
|          | 74.6±0.5μs           | 78.4±1μs            | 1.05    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(100)                   |
|          | 107±0.5ns            | 110±0.9ns           | 1.03    | mixin.CFVariableMixin.time_get_attributes                                                            |
|          | 107±0.5ns            | 108±0.9ns           | 1.01    | mixin.CFVariableMixin.time_get_long_name                                                             |
|          | 961±7ns              | 946±10ns            | 0.98    | mixin.CFVariableMixin.time_get_metadata                                                              |
|          | 108±7ns              | 108±0.5ns           | 1.00    | mixin.CFVariableMixin.time_get_standard_name                                                         |
|          | 107±0.2ns            | 108±0.9ns           | 1.01    | mixin.CFVariableMixin.time_get_units                                                                 |
|          | 106±0.7ns            | 107±0.2ns           | 1.01    | mixin.CFVariableMixin.time_get_var_name                                                              |
|          | 709±7ns              | 719±7ns             | 1.01    | mixin.CFVariableMixin.time_set_attributes                                                            |
|          | 114±0.5ns            | 114±0.6ns           | 1.00    | mixin.CFVariableMixin.time_set_long_name                                                             |
|          | 3.48±0.02μs          | 3.51±0.04μs         | 1.01    | mixin.CFVariableMixin.time_set_metadata__dict                                                        |
|          | 4.39±0.07μs          | 4.37±0.07μs         | 0.99    | mixin.CFVariableMixin.time_set_metadata__metadata                                                    |
|          | 4.34±0.07μs          | 4.32±0.07μs         | 0.99    | mixin.CFVariableMixin.time_set_metadata__tuple                                                       |
|          | 568±10ns             | 542±4ns             | 0.95    | mixin.CFVariableMixin.time_set_standard_name                                                         |
|          | 410±1ns              | 424±6ns             | 1.04    | mixin.CFVariableMixin.time_set_units                                                                 |
|          | 436±2ns              | 436±5ns             | 1.00    | mixin.CFVariableMixin.time_set_var_name                                                              |
|          | 375±1ms              | 375±3ms             | 1.00    | plot.AuxSort.time_aux_sort                                                                           |
|          | 83.3±5ms             | 82.4±3ms            | 0.99    | regridding.CurvilinearRegridding.time_regrid_pic                                                     |
|          | 97.5±0.9ms           | 97.6±0.9ms          | 1.00    | regridding.HorizontalChunkedRegridding.time_regrid_area_w                                            |
|          | 51.8±2ms             | 51.8±2ms            | 1.00    | regridding.HorizontalChunkedRegridding.time_regrid_area_w_new_grid                                   |
|          | 4.12±0.2ms           | 4.72±0.1ms          | 1.14    | save.NetcdfSave.time_netcdf_save_cube(50, False)                                                     |
|          | 92.6±1ms             | 101±1ms             | 1.09    | save.NetcdfSave.time_netcdf_save_cube(50, True)                                                      |
|          | 55.5±0.6ms           | 56.5±0.8ms          | 1.02    | save.NetcdfSave.time_netcdf_save_cube(600, False)                                                    |
|          | 599±7ms              | 612±5ms             | 1.02    | save.NetcdfSave.time_netcdf_save_cube(600, True)                                                     |
|          | 102±2ns              | 100±1ns             | 0.98    | save.NetcdfSave.time_netcdf_save_mesh(50, False)                                                     |
|          | 79.3±1ms             | 84.8±1ms            | 1.07    | save.NetcdfSave.time_netcdf_save_mesh(50, True)                                                      |
|          | 103±2ns              | 100±1ns             | 0.97    | save.NetcdfSave.time_netcdf_save_mesh(600, False)                                                    |
|          | 532±5ms              | 537±5ms             | 1.01    | save.NetcdfSave.time_netcdf_save_mesh(600, True)                                                     |
|          | 37.5±1ms             | 44.3±1ms            | 1.18    | stats.PearsonR.time_lazy                                                                             |
|          | 20.1±0.3ms           | 19.7±0.3ms          | 0.98    | stats.PearsonR.time_real                                                                             |
|          | 25.2±1ms             | 25.1±0.7ms          | 1.00    | trajectory.TrajectoryInterpolation.time_trajectory_linear                                            |
|          | 61.8±0.6ms           | 62.1±0.5ms          | 1.01    | trajectory.TrajectoryInterpolation.time_trajectory_nearest                                           |

Benchmarks that have got worse:

| Change   | Before [3b0ab402]    | After [75e50bae]    |   Ratio | Benchmark (Parameter)                                        |
|----------|----------------------|---------------------|---------|--------------------------------------------------------------|
| +        | 1.55±0.02ms          | 1.92±0.07ms         |    1.24 | experimental.ugrid.Connectivity.time_create(6)               |
| +        | 2.34±0.03ms          | 2.85±0.05ms         |    1.22 | experimental.ugrid.Connectivity.time_location_lengths(6)     |
| +        | 3.41±0.04ms          | 4.18±0.06ms         |    1.22 | experimental.ugrid.Connectivity.time_validate_indices(6)     |
| +        | 2.72±0.04ms          | 3.31±0.1ms          |    1.22 | experimental.ugrid.ConnectivityLazy.time_create(6)           |
| +        | 2.63±0.06ms          | 3.16±0.1ms          |    1.2  | experimental.ugrid.ConnectivityLazy.time_location_lengths(6) |
| +        | 254±2μs              | 371±4μs             |    1.46 | experimental.ugrid.Mesh.time_add_connectivities(6)           |
| +        | 304±4μs              | 418±5μs             |    1.37 | experimental.ugrid.Mesh.time_create(6)                       |
| +        | 302±10μs             | 416±10μs            |    1.38 | experimental.ugrid.MeshLazy.time_add_connectivities(6)       |
| +        | 345±8μs              | 472±20μs            |    1.37 | experimental.ugrid.MeshLazy.time_create(6)                   |
| +        | 296±2ms              | 365±4ms             |    1.23 | load.StructuredFF.time_structured_load((2, 2, 1000), True)   |
```

</details>

Generated by GHA run [`8078150722`](https://github.com/SciTools/iris/actions/runs/8078150722)


# :stopwatch: Performance Benchmark Report: df5a7525

<details>
<summary>Performance shifts</summary>

```
| Change   | Before [c6151e81]    | After [df5a7525]    |   Ratio | Benchmark (Parameter)                                      |
|----------|----------------------|---------------------|---------|------------------------------------------------------------|
| +        | 1.99±0.1ms           | 2.43±0.06ms         |    1.22 | experimental.ugrid.Connectivity.time_create(1000000)       |
| +        | 1.51±0.01ms          | 1.85±0.03ms         |    1.22 | experimental.ugrid.Connectivity.time_create(6)             |
| +        | 247±5μs              | 352±3μs             |    1.43 | experimental.ugrid.Mesh.time_add_connectivities(6)         |
| +        | 297±3μs              | 401±8μs             |    1.35 | experimental.ugrid.Mesh.time_create(6)                     |
| +        | 293±9μs              | 397±9μs             |    1.36 | experimental.ugrid.MeshLazy.time_add_connectivities(6)     |
| +        | 341±10μs             | 444±10μs            |    1.3  | experimental.ugrid.MeshLazy.time_create(6)                 |
| +        | 285±4ms              | 346±4ms             |    1.21 | load.StructuredFF.time_structured_load((2, 2, 1000), True) |
```

</details>

<details>
<summary>Full benchmark results</summary>

```

Benchmarks that have stayed the same:

| Change   | Before [c6151e81]    | After [df5a7525]    | Ratio   | Benchmark (Parameter)                                                                                |
|----------|----------------------|---------------------|---------|------------------------------------------------------------------------------------------------------|
|          | n/a                  | n/a                 | n/a     | aux_factory.FactoryCommon.time_create                                                                |
|          | 4.32±0.04μs          | 4.30±0.02μs         | 1.00    | aux_factory.HybridHeightFactory.time_create                                                          |
|          | 4.93±0.06μs          | 4.92±0.08μs         | 1.00    | coords.AncillaryVariable.time_create                                                                 |
|          | 426±3ns              | 416±4ns             | 0.98    | coords.AuxCoord.time_bounds                                                                          |
|          | 8.93±0.06μs          | 8.88±0.08μs         | 0.99    | coords.AuxCoord.time_create                                                                          |
|          | 414±2ns              | 397±5ns             | 0.96    | coords.AuxCoord.time_points                                                                          |
|          | 231±20μs             | 245±20μs            | 1.06    | coords.AuxCoordLazy.time_bounds                                                                      |
|          | 12.9±0.9μs           | 12.7±0.6μs          | 0.98    | coords.AuxCoordLazy.time_create                                                                      |
|          | 229±20μs             | 241±20μs            | 1.05    | coords.AuxCoordLazy.time_points                                                                      |
|          | 5.38±0.05μs          | 5.32±0.1μs          | 0.99    | coords.CellMeasure.time_create                                                                       |
|          | 1.10±0.01μs          | 1.11±0.02μs         | 1.01    | coords.CellMethod.time_create                                                                        |
|          | n/a                  | n/a                 | n/a     | coords.CoordCommon.time_create                                                                       |
|          | 108±1μs              | 109±1μs             | 1.00    | coords.DimCoord.time_create                                                                          |
|          | 31.4±0.8μs           | 31.0±0.7μs          | 0.99    | coords.DimCoord.time_regular                                                                         |
|          | 375±4ms              | 370±3ms             | 0.99    | cube.Aggregation.time_aggregated_by                                                                  |
|          | 59.3±0.6μs           | 59.1±0.9μs          | 1.00    | cube.AncillaryVariable.time_add                                                                      |
|          | 11.4±0.6μs           | 11.6±0.4μs          | 1.02    | cube.AncillaryVariable.time_create                                                                   |
|          | 67.0±2μs             | 66.7±0.7μs          | 1.00    | cube.AuxCoord.time_add                                                                               |
|          | 9.53±0.1μs           | 9.41±0.07μs         | 0.99    | cube.AuxCoord.time_create                                                                            |
|          | 5.98±0.1μs           | 5.86±0.05μs         | 0.98    | cube.AuxCoord.time_return_coord_dims                                                                 |
|          | 4.47±0.02μs          | 4.36±0.04μs         | 0.98    | cube.AuxCoord.time_return_coords                                                                     |
|          | 40.2±1μs             | 39.7±0.4μs          | 0.99    | cube.AuxFactory.time_add                                                                             |
|          | 12.2±0.2μs           | 12.3±0.2μs          | 1.01    | cube.AuxFactory.time_create                                                                          |
|          | 58.7±0.4μs           | 59.6±0.3μs          | 1.02    | cube.CellMeasure.time_add                                                                            |
|          | 11.4±0.2μs           | 11.4±0.2μs          | 1.01    | cube.CellMeasure.time_create                                                                         |
|          | 52.7±0.4μs           | 52.4±0.7μs          | 0.99    | cube.CellMethod.time_add                                                                             |
|          | 7.22±0.04μs          | 7.24±0.03μs         | 1.00    | cube.CellMethod.time_create                                                                          |
|          | n/a                  | n/a                 | n/a     | cube.ComponentCommon.time_add                                                                        |
|          | n/a                  | n/a                 | n/a     | cube.ComponentCommon.time_create                                                                     |
|          | 130±0.2ms            | 130±0.5ms           | 1.00    | cube.Concatenate.time_concatenate                                                                    |
|          | 6.66±0.04μs          | 6.72±0.06μs         | 1.01    | cube.Cube.time_basic                                                                                 |
|          | 57.6±0.2ns           | 57.8±0.2ns          | 1.00    | cube.Cube.time_rename                                                                                |
|          | 61.6±0.8μs           | 60.6±0.4μs          | 0.98    | cube.Equality.time_equality                                                                          |
|          | 326±3ms              | 330±4ms             | 1.01    | cube.Merge.time_merge                                                                                |
|          | 26.8±0.7μs           | 25.8±1μs            | 0.96    | cube.MeshCoord.time_add(10000)                                                                       |
|          | 30.4±2μs             | 29.5±2μs            | 0.97    | cube.MeshCoord.time_add(1000000)                                                                     |
|          | 24.9±0.7μs           | 24.0±0.7μs          | 0.97    | cube.MeshCoord.time_add(6)                                                                           |
|          | 19.6±0.4μs           | 19.5±0.3μs          | 1.00    | cube.MeshCoord.time_create(10000)                                                                    |
|          | 19.3±0.3μs           | 19.0±0.4μs          | 0.99    | cube.MeshCoord.time_create(1000000)                                                                  |
|          | 19.0±0.3μs           | 19.0±0.3μs          | 1.00    | cube.MeshCoord.time_create(6)                                                                        |
|          | 41.7±3μs             | 40.9±4μs            | 0.98    | cube.MeshCoord.time_remove(10000)                                                                    |
|          | 58.4±4μs             | 58.0±4μs            | 0.99    | cube.MeshCoord.time_remove(1000000)                                                                  |
|          | 40.7±2μs             | 39.8±3μs            | 0.98    | cube.MeshCoord.time_remove(6)                                                                        |
|          | 610±8ns              | 612±10ns            | 1.00    | experimental.ugrid.Connectivity.time_indices(1000000)                                                |
|          | 610±10ns             | 621±10ns            | 1.02    | experimental.ugrid.Connectivity.time_indices(6)                                                      |
|          | 20.5±2ms             | 23.2±2ms            | 1.13    | experimental.ugrid.Connectivity.time_location_lengths(1000000)                                       |
|          | 2.28±0.01ms          | 2.65±0.04ms         | 1.16    | experimental.ugrid.Connectivity.time_location_lengths(6)                                             |
|          | 21.9±3ms             | 27.3±3ms            | ~1.25   | experimental.ugrid.Connectivity.time_validate_indices(1000000)                                       |
|          | 3.38±0.04ms          | 4.02±0.06ms         | 1.19    | experimental.ugrid.Connectivity.time_validate_indices(6)                                             |
|          | 3.39±0.06ms          | 3.94±0.08ms         | 1.16    | experimental.ugrid.ConnectivityLazy.time_create(1000000)                                             |
|          | 2.67±0.05ms          | 3.18±0.05ms         | 1.19    | experimental.ugrid.ConnectivityLazy.time_create(6)                                                   |
|          | 239±5μs              | 254±6μs             | 1.06    | experimental.ugrid.ConnectivityLazy.time_indices(1000000)                                            |
|          | 237±4μs              | 248±6μs             | 1.05    | experimental.ugrid.ConnectivityLazy.time_indices(6)                                                  |
|          | 19.3±0.4ms           | 20.2±0.5ms          | 1.05    | experimental.ugrid.ConnectivityLazy.time_location_lengths(1000000)                                   |
|          | 2.51±0.03ms          | 2.95±0.04ms         | 1.18    | experimental.ugrid.ConnectivityLazy.time_location_lengths(6)                                         |
|          | 21.3±0.4ms           | 22.6±0.5ms          | 1.06    | experimental.ugrid.ConnectivityLazy.time_validate_indices(1000000)                                   |
|          | 3.63±0.04ms          | 4.26±0.06ms         | 1.17    | experimental.ugrid.ConnectivityLazy.time_validate_indices(6)                                         |
|          | 12.7±0.2μs           | 12.5±0.2μs          | 0.98    | experimental.ugrid.Mesh.time_add_connectivities(1000000)                                             |
|          | 4.87±0.03μs          | 4.90±0.05μs         | 1.01    | experimental.ugrid.Mesh.time_add_coords(1000000)                                                     |
|          | 4.81±0.04μs          | 4.86±0.06μs         | 1.01    | experimental.ugrid.Mesh.time_add_coords(6)                                                           |
|          | 5.14±0.05μs          | 5.02±0.07μs         | 0.98    | experimental.ugrid.Mesh.time_connectivities(1000000)                                                 |
|          | 5.07±0.07μs          | 4.97±0.05μs         | 0.98    | experimental.ugrid.Mesh.time_connectivities(6)                                                       |
|          | 5.85±0.07μs          | 5.83±0.06μs         | 1.00    | experimental.ugrid.Mesh.time_coords(1000000)                                                         |
|          | 5.79±0.07μs          | 5.85±0.04μs         | 1.01    | experimental.ugrid.Mesh.time_coords(6)                                                               |
|          | 46.5±0.4μs           | 45.6±0.9μs          | 0.98    | experimental.ugrid.Mesh.time_create(1000000)                                                         |
|          | 69.1±2ms             | 72.0±0.7ms          | 1.04    | experimental.ugrid.Mesh.time_eq(1000000)                                                             |
|          | 279±4μs              | 273±4μs             | 0.98    | experimental.ugrid.Mesh.time_eq(6)                                                                   |
|          | 4.99±0.08μs          | 4.89±0.04μs         | 0.98    | experimental.ugrid.Mesh.time_remove_connectivities(1000000)                                          |
|          | 4.92±0.04μs          | 4.90±0.03μs         | 1.00    | experimental.ugrid.Mesh.time_remove_connectivities(6)                                                |
|          | 7.38±0.09μs          | 7.25±0.06μs         | 0.98    | experimental.ugrid.Mesh.time_remove_coords(1000000)                                                  |
|          | 7.28±0.09μs          | 7.26±0.06μs         | 1.00    | experimental.ugrid.Mesh.time_remove_coords(6)                                                        |
|          | 10.1±0.06μs          | 10.6±0.09μs         | 1.05    | experimental.ugrid.MeshCoord.time_bounds(10000)                                                      |
|          | 114±3ms              | 117±2ms             | 1.02    | experimental.ugrid.MeshCoord.time_bounds(1000000)                                                    |
|          | 5.39±0.06μs          | 5.37±0.05μs         | 1.00    | experimental.ugrid.MeshCoord.time_bounds(6)                                                          |
|          | 3.19±0.02ms          | 3.58±0.02ms         | 1.12    | experimental.ugrid.MeshCoord.time_create(10000)                                                      |
|          | 3.23±0.03ms          | 3.62±0.03ms         | 1.12    | experimental.ugrid.MeshCoord.time_create(1000000)                                                    |
|          | 203±2μs              | 201±2μs             | 0.99    | experimental.ugrid.MeshCoord.time_create(6)                                                          |
|          | 3.58±0.02μs          | 3.58±0.05μs         | 1.00    | experimental.ugrid.MeshCoord.time_points(10000)                                                      |
|          | 4.10±0.07μs          | 4.09±0.05μs         | 1.00    | experimental.ugrid.MeshCoord.time_points(1000000)                                                    |
|          | 2.93±0.04μs          | 2.89±0.03μs         | 0.99    | experimental.ugrid.MeshCoord.time_points(6)                                                          |
|          | 6.77±0.07ms          | 7.35±0.1ms          | 1.09    | experimental.ugrid.MeshCoordLazy.time_bounds(10000)                                                  |
|          | 115±1ms              | 116±0.9ms           | 1.01    | experimental.ugrid.MeshCoordLazy.time_bounds(1000000)                                                |
|          | 11.6±0.5μs           | 11.6±0.4μs          | 1.00    | experimental.ugrid.MeshCoordLazy.time_bounds(6)                                                      |
|          | 3.29±0.03ms          | 3.69±0.07ms         | 1.12    | experimental.ugrid.MeshCoordLazy.time_create(10000)                                                  |
|          | 3.31±0.04ms          | 3.72±0.07ms         | 1.12    | experimental.ugrid.MeshCoordLazy.time_create(1000000)                                                |
|          | 238±6μs              | 238±5μs             | 1.00    | experimental.ugrid.MeshCoordLazy.time_create(6)                                                      |
|          | 2.37±0.07ms          | 2.43±0.04ms         | 1.03    | experimental.ugrid.MeshCoordLazy.time_points(10000)                                                  |
|          | 4.37±0.08ms          | 4.47±0.1ms          | 1.02    | experimental.ugrid.MeshCoordLazy.time_points(1000000)                                                |
|          | 7.76±0.4μs           | 7.98±0.6μs          | 1.03    | experimental.ugrid.MeshCoordLazy.time_points(6)                                                      |
|          | 31.9±1μs             | 32.0±1μs            | 1.00    | experimental.ugrid.MeshLazy.time_add_connectivities(1000000)                                         |
|          | 18.7±0.9μs           | 19.4±1μs            | 1.04    | experimental.ugrid.MeshLazy.time_add_coords(1000000)                                                 |
|          | 15.3±0.8μs           | 15.3±0.9μs          | 1.00    | experimental.ugrid.MeshLazy.time_add_coords(6)                                                       |
|          | 16.8±0.6μs           | 16.4±0.6μs          | 0.98    | experimental.ugrid.MeshLazy.time_connectivities(1000000)                                             |
|          | 16.1±0.3μs           | 16.1±0.4μs          | 1.00    | experimental.ugrid.MeshLazy.time_connectivities(6)                                                   |
|          | 19.8±0.8μs           | 18.9±0.7μs          | 0.96    | experimental.ugrid.MeshLazy.time_coords(1000000)                                                     |
|          | 18.5±0.5μs           | 18.6±0.4μs          | 1.00    | experimental.ugrid.MeshLazy.time_coords(6)                                                           |
|          | 79.2±2μs             | 76.5±2μs            | 0.97    | experimental.ugrid.MeshLazy.time_create(1000000)                                                     |
|          | 70.6±1ms             | 71.9±1ms            | 1.02    | experimental.ugrid.MeshLazy.time_eq(1000000)                                                         |
|          | 338±10μs             | 336±7μs             | 1.00    | experimental.ugrid.MeshLazy.time_eq(6)                                                               |
|          | 17.8±0.6μs           | 17.7±0.8μs          | 0.99    | experimental.ugrid.MeshLazy.time_remove_connectivities(1000000)                                      |
|          | 16.8±0.4μs           | 16.6±0.4μs          | 0.99    | experimental.ugrid.MeshLazy.time_remove_connectivities(6)                                            |
|          | 31.4±1μs             | 31.1±0.9μs          | 0.99    | experimental.ugrid.MeshLazy.time_remove_coords(1000000)                                              |
|          | 29.3±0.8μs           | 29.2±0.7μs          | 1.00    | experimental.ugrid.MeshLazy.time_remove_coords(6)                                                    |
|          | n/a                  | n/a                 | n/a     | experimental.ugrid.UGridCommon.time_create(1000000)                                                  |
|          | n/a                  | n/a                 | n/a     | experimental.ugrid.UGridCommon.time_create(6)                                                        |
|          | 482±4ns              | 492±5ns             | 1.02    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(50)               |
|          | 248±1ms              | 249±2ms             | 1.00    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(500)              |
|          | 11.5±0.1ms           | 13.4±0.06ms         | 1.17    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(50)            |
|          | 13.8±0.9ms           | 15.4±0.7ms          | 1.12    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(500)           |
|          | 5.0                  | 5.0                 | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(50)  |
|          | 5.0                  | 5.0                 | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(500) |
|          | 124±2ms              | 132±1ms             | 1.07    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(50)          |
|          | 718±4ms              | 725±6ms             | 1.01    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(500)         |
|          | 86.6±0.7ms           | 94.7±1ms            | 1.09    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(50)                              |
|          | 676±4ms              | 682±3ms             | 1.01    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(500)                             |
|          | 2.1752849999999997   | 2.1752849999999997  | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(50)                   |
|          | 216.01528499999998   | 216.01528499999998  | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(500)                  |
|          | 569±5μs              | 567±10μs            | 1.00    | import_iris.Iris.time__concatenate                                                                   |
|          | 162±1μs              | 162±2μs             | 1.00    | import_iris.Iris.time__constraints                                                                   |
|          | 101±1μs              | 101±0.5μs           | 1.00    | import_iris.Iris.time__data_manager                                                                  |
|          | 84.7±0.3μs           | 84.9±0.5μs          | 1.00    | import_iris.Iris.time__deprecation                                                                   |
|          | 107±0.4μs            | 108±1μs             | 1.01    | import_iris.Iris.time__lazy_data                                                                     |
|          | 789±7μs              | 789±7μs             | 1.00    | import_iris.Iris.time__merge                                                                         |
|          | 71.4±0.2μs           | 71.6±0.2μs          | 1.00    | import_iris.Iris.time__representation                                                                |
|          | 430±4μs              | 430±5μs             | 1.00    | import_iris.Iris.time_analysis                                                                       |
|          | 128±1μs              | 128±3μs             | 1.01    | import_iris.Iris.time_analysis__area_weighted                                                        |
|          | 98.7±0.5μs           | 99.3±2μs            | 1.01    | import_iris.Iris.time_analysis__grid_angles                                                          |
|          | 218±2μs              | 217±4μs             | 0.99    | import_iris.Iris.time_analysis__interpolation                                                        |
|          | 170±4μs              | 169±4μs             | 0.99    | import_iris.Iris.time_analysis__regrid                                                               |
|          | 100±1μs              | 100±0.9μs           | 1.00    | import_iris.Iris.time_analysis__scipy_interpolate                                                    |
|          | 126±2μs              | 127±1μs             | 1.01    | import_iris.Iris.time_analysis_calculus                                                              |
|          | 284±2μs              | 285±2μs             | 1.00    | import_iris.Iris.time_analysis_cartography                                                           |
|          | 85.1±1μs             | 83.8±1μs            | 0.98    | import_iris.Iris.time_analysis_geomerty                                                              |
|          | 198±1μs              | 199±2μs             | 1.01    | import_iris.Iris.time_analysis_maths                                                                 |
|          | 90.3±0.6μs           | 90.3±0.9μs          | 1.00    | import_iris.Iris.time_analysis_stats                                                                 |
|          | 164±2μs              | 166±1μs             | 1.01    | import_iris.Iris.time_analysis_trajectory                                                            |
|          | 266±3μs              | 265±4μs             | 1.00    | import_iris.Iris.time_aux_factory                                                                    |
|          | 80.2±0.4μs           | 80.4±0.5μs          | 1.00    | import_iris.Iris.time_common                                                                         |
|          | 151±1μs              | 153±1μs             | 1.01    | import_iris.Iris.time_common_lenient                                                                 |
|          | 877±8μs              | 879±8μs             | 1.00    | import_iris.Iris.time_common_metadata                                                                |
|          | 123±1μs              | 124±1μs             | 1.01    | import_iris.Iris.time_common_mixin                                                                   |
|          | 1.02±0ms             | 1.02±0.01ms         | 1.00    | import_iris.Iris.time_common_resolve                                                                 |
|          | 183±1μs              | 186±2μs             | 1.01    | import_iris.Iris.time_config                                                                         |
|          | 105±0.7μs            | 106±0.3μs           | 1.02    | import_iris.Iris.time_coord_categorisation                                                           |
|          | 319±1μs              | 320±2μs             | 1.00    | import_iris.Iris.time_coord_systems                                                                  |
|          | 630±5μs              | 635±8μs             | 1.01    | import_iris.Iris.time_coords                                                                         |
|          | 588±7μs              | 595±5μs             | 1.01    | import_iris.Iris.time_cube                                                                           |
|          | 205±2μs              | 205±1μs             | 1.00    | import_iris.Iris.time_exceptions                                                                     |
|          | 72.1±0.3μs           | 72.5±0.8μs          | 1.01    | import_iris.Iris.time_experimental                                                                   |
|          | 194±1μs              | 194±2μs             | 1.00    | import_iris.Iris.time_fileformats                                                                    |
|          | 224±3μs              | 225±2μs             | 1.00    | import_iris.Iris.time_fileformats__ff                                                                |
|          | 2.40±0.01ms          | 2.39±0.02ms         | 1.00    | import_iris.Iris.time_fileformats__ff_cross_references                                               |
|          | 73.9±0.5μs           | 73.7±0.5μs          | 1.00    | import_iris.Iris.time_fileformats__pp_lbproc_pairs                                                   |
|          | 106±1μs              | 106±1μs             | 1.00    | import_iris.Iris.time_fileformats_abf                                                                |
|          | 316±3μs              | 318±3μs             | 1.00    | import_iris.Iris.time_fileformats_cf                                                                 |
|          | 5.32±0.03ms          | 5.30±0.06ms         | 1.00    | import_iris.Iris.time_fileformats_dot                                                                |
|          | 68.5±1μs             | 69.4±0.6μs          | 1.01    | import_iris.Iris.time_fileformats_name                                                               |
|          | 235±1μs              | 233±3μs             | 0.99    | import_iris.Iris.time_fileformats_name_loaders                                                       |
|          | 113±0.9μs            | 112±1μs             | 0.99    | import_iris.Iris.time_fileformats_netcdf                                                             |
|          | 112±0.8μs            | 112±1μs             | 1.00    | import_iris.Iris.time_fileformats_nimrod                                                             |
|          | 189±3μs              | 187±2μs             | 0.99    | import_iris.Iris.time_fileformats_nimrod_load_rules                                                  |
|          | 669±3μs              | 675±6μs             | 1.01    | import_iris.Iris.time_fileformats_pp                                                                 |
|          | 159±0.8μs            | 160±2μs             | 1.01    | import_iris.Iris.time_fileformats_pp_load_rules                                                      |
|          | 121±1μs              | 121±1μs             | 1.00    | import_iris.Iris.time_fileformats_pp_save_rules                                                      |
|          | 444±1μs              | 436±3μs             | 0.98    | import_iris.Iris.time_fileformats_rules                                                              |
|          | 196±2μs              | 192±2μs             | 0.98    | import_iris.Iris.time_fileformats_structured_array_identification                                    |
|          | 79.2±0.5μs           | 78.9±0.8μs          | 1.00    | import_iris.Iris.time_fileformats_um                                                                 |
|          | 149±0.8μs            | 150±2μs             | 1.01    | import_iris.Iris.time_fileformats_um__fast_load                                                      |
|          | 129±0.7μs            | 131±1μs             | 1.01    | import_iris.Iris.time_fileformats_um__fast_load_structured_fields                                    |
|          | 70.3±0.5μs           | 70.9±0.5μs          | 1.01    | import_iris.Iris.time_fileformats_um__ff_replacement                                                 |
|          | 78.3±0.5μs           | 77.5±0.7μs          | 0.99    | import_iris.Iris.time_fileformats_um__optimal_array_structuring                                      |
|          | 873±5μs              | 859±5μs             | 0.98    | import_iris.Iris.time_fileformats_um_cf_map                                                          |
|          | 128±0.6μs            | 126±3μs             | 0.99    | import_iris.Iris.time_io                                                                             |
|          | 162±4μs              | 159±2μs             | 0.98    | import_iris.Iris.time_io_format_picker                                                               |
|          | 194±1μs              | 192±0.9μs           | 0.99    | import_iris.Iris.time_iris                                                                           |
|          | 119±0.8μs            | 118±0.7μs           | 0.99    | import_iris.Iris.time_iterate                                                                        |
|          | 8.09±0.08ms          | 8.00±0.03ms         | 0.99    | import_iris.Iris.time_palette                                                                        |
|          | 301±2μs              | 306±4μs             | 1.02    | import_iris.Iris.time_plot                                                                           |
|          | 93.1±0.6μs           | 92.3±0.5μs          | 0.99    | import_iris.Iris.time_quickplot                                                                      |
|          | 1.95±0ms             | 1.88±0.01ms         | 0.96    | import_iris.Iris.time_std_names                                                                      |
|          | 1.74±0.03ms          | 1.70±0.01ms         | 0.98    | import_iris.Iris.time_symbols                                                                        |
|          | 111±3ms              | 109±1ms             | 0.98    | import_iris.Iris.time_tests                                                                          |
|          | 218±2μs              | 218±1μs             | 1.00    | import_iris.Iris.time_third_party_cartopy                                                            |
|          | 4.79±0.04ms          | 4.79±0.04ms         | 1.00    | import_iris.Iris.time_third_party_cf_units                                                           |
|          | 103±0.7μs            | 103±0.5μs           | 1.00    | import_iris.Iris.time_third_party_cftime                                                             |
|          | 2.70±0.03ms          | 2.64±0.01ms         | 0.98    | import_iris.Iris.time_third_party_matplotlib                                                         |
|          | 1.01±0.01ms          | 1.01±0ms            | 1.00    | import_iris.Iris.time_third_party_numpy                                                              |
|          | 154±2μs              | 153±1μs             | 0.99    | import_iris.Iris.time_third_party_scipy                                                              |
|          | 92.9±0.8μs           | 92.5±0.4μs          | 1.00    | import_iris.Iris.time_time                                                                           |
|          | 285±2μs              | 287±3μs             | 1.01    | import_iris.Iris.time_util                                                                           |
|          | 82.3±1μs             | 81.0±0.7μs          | 0.98    | iterate.IZip.time_izip                                                                               |
|          | 7.41±0.1ms           | 7.81±0.04ms         | 1.05    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'FF')                                           |
|          | 22.5±0.5ms           | 23.4±0.4ms          | 1.04    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'NetCDF')                                       |
|          | 8.09±0.02ms          | 8.53±0.06ms         | 1.05    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'PP')                                           |
|          | 7.41±0.03ms          | 7.84±0.04ms         | 1.06    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'FF')                                            |
|          | 20.2±0.4ms           | 20.1±0.1ms          | 0.99    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'NetCDF')                                        |
|          | 8.29±0.1ms           | 8.65±0.07ms         | 1.04    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'PP')                                            |
|          | 1.24±0.01s           | 1.31±0.01s          | 1.06    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'FF')                                             |
|          | 19.4±0.3ms           | 19.8±0.4ms          | 1.02    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'NetCDF')                                         |
|          | 1.38±0.01s           | 1.47±0.01s          | 1.07    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'PP')                                             |
|          | 1.24±0.01s           | 1.30±0.01s          | 1.05    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'FF')                                              |
|          | 19.1±0.2ms           | 19.6±0.1ms          | 1.03    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'NetCDF')                                          |
|          | 1.39±0.02s           | 1.45±0.01s          | 1.04    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'PP')                                              |
|          | 3.57±0.05ms          | 3.79±0.05ms         | 1.06    | load.LoadAndRealise.time_load((50, 50, 2), False, 'FF')                                              |
|          | 18.6±0.2ms           | 18.9±0.1ms          | 1.02    | load.LoadAndRealise.time_load((50, 50, 2), False, 'NetCDF')                                          |
|          | 3.85±0.03ms          | 4.04±0.03ms         | 1.05    | load.LoadAndRealise.time_load((50, 50, 2), False, 'PP')                                              |
|          | 3.56±0.04ms          | 3.78±0.05ms         | 1.06    | load.LoadAndRealise.time_load((50, 50, 2), True, 'FF')                                               |
|          | 18.7±0.1ms           | 18.5±0.2ms          | 0.99    | load.LoadAndRealise.time_load((50, 50, 2), True, 'NetCDF')                                           |
|          | 3.83±0.04ms          | 4.03±0.04ms         | 1.05    | load.LoadAndRealise.time_load((50, 50, 2), True, 'PP')                                               |
|          | 31.2±1ms             | 31.6±2ms            | 1.01    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'FF')                                        |
|          | 18.5±0.4ms           | 19.0±0.6ms          | 1.03    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'NetCDF')                                    |
|          | 12.8±3ms             | 13.1±2ms            | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'PP')                                        |
|          | 24.9±0.7ms           | 25.6±2ms            | 1.03    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'FF')                                         |
|          | 72.1±1ms             | 72.0±1ms            | 1.00    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'NetCDF')                                     |
|          | 25.1±2ms             | 25.5±3ms            | 1.01    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'PP')                                         |
|          | 379±3ms              | 429±3ms             | 1.13    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'FF')                                          |
|          | 2.66±0.07ms          | 2.78±0.07ms         | 1.04    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'NetCDF')                                      |
|          | 381±3ms              | 437±2ms             | 1.15    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'PP')                                          |
|          | 379±2ms              | 439±3ms             | 1.16    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'FF')                                           |
|          | 2.70±0.08ms          | 2.83±0.07ms         | 1.05    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'NetCDF')                                       |
|          | 386±3ms              | 444±3ms             | 1.15    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'PP')                                           |
|          | 1.37±0.08ms          | 1.55±0.08ms         | 1.13    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'FF')                                           |
|          | 2.69±0.07ms          | 2.82±0.1ms          | 1.05    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'NetCDF')                                       |
|          | 1.35±0.07ms          | 1.52±0.09ms         | 1.13    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'PP')                                           |
|          | 1.37±0.08ms          | 1.61±0.1ms          | 1.17    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'FF')                                            |
|          | 2.81±0.1ms           | 2.79±0.07ms         | 0.99    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'NetCDF')                                        |
|          | 1.39±0.07ms          | 1.56±0.04ms         | 1.13    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'PP')                                            |
|          | 337±4ms              | 332±3ms             | 0.99    | load.ManyVars.time_many_var_load                                                                     |
|          | 7.48±0.06ms          | 7.88±0.04ms         | 1.05    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'FF')                                     |
|          | 8.23±0.05ms          | 8.68±0.04ms         | 1.05    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'PP')                                     |
|          | 1.25±0.02s           | 1.30±0.01s          | 1.04    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'FF')                                       |
|          | 1.42±0.02s           | 1.47±0.02s          | 1.03    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'PP')                                       |
|          | 3.64±0.02ms          | 3.79±0.03ms         | 1.04    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'FF')                                          |
|          | 3.91±0.05ms          | 4.08±0.03ms         | 1.04    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'PP')                                          |
|          | 7.42±0.04ms          | 7.83±0.02ms         | 1.06    | load.StructuredFF.time_structured_load((1280, 960, 5), False)                                        |
|          | 4.20±0.03ms          | 4.53±0.04ms         | 1.08    | load.StructuredFF.time_structured_load((1280, 960, 5), True)                                         |
|          | 1.23±0.01s           | 1.30±0.01s          | 1.06    | load.StructuredFF.time_structured_load((2, 2, 1000), False)                                          |
|          | 3.60±0.02ms          | 3.71±0.02ms         | 1.03    | load.StructuredFF.time_structured_load((2, 2, 2), False)                                             |
|          | 3.29±0.02ms          | 3.41±0.04ms         | 1.04    | load.StructuredFF.time_structured_load((2, 2, 2), True)                                              |
|          | 129±2ms              | 136±1ms             | 1.05    | load.TimeConstraint.time_time_constraint(20, 'FF')                                                   |
|          | 22.1±0.2ms           | 21.7±0.3ms          | 0.98    | load.TimeConstraint.time_time_constraint(20, 'NetCDF')                                               |
|          | 144±3ms              | 153±1ms             | 1.06    | load.TimeConstraint.time_time_constraint(20, 'PP')                                                   |
|          | 26.6±0.2ms           | 27.6±0.1ms          | 1.04    | load.TimeConstraint.time_time_constraint(3, 'FF')                                                    |
|          | 21.7±0.2ms           | 21.5±0.2ms          | 0.99    | load.TimeConstraint.time_time_constraint(3, 'NetCDF')                                                |
|          | 28.5±0.1ms           | 29.7±0.3ms          | 1.04    | load.TimeConstraint.time_time_constraint(3, 'PP')                                                    |
|          | 16.4±0.2ms           | 16.8±0.3ms          | 1.03    | load.ugrid.BasicLoading.time_load_file(1)                                                            |
|          | 35.0±0.4ms           | 37.5±0.3ms          | 1.07    | load.ugrid.BasicLoading.time_load_file(200000)                                                       |
|          | 13.3±0.2ms           | 13.6±0.2ms          | 1.02    | load.ugrid.BasicLoading.time_load_mesh(1)                                                            |
|          | 20.0±0.2ms           | 20.7±0.4ms          | 1.04    | load.ugrid.BasicLoading.time_load_mesh(200000)                                                       |
|          | 16.6±0.4ms           | 16.9±0.3ms          | 1.02    | load.ugrid.BasicLoadingTime.time_load_file(1)                                                        |
|          | 18.6±0.4ms           | 19.1±0.4ms          | 1.02    | load.ugrid.BasicLoadingTime.time_load_file(200000)                                                   |
|          | 13.2±0.3ms           | 13.7±0.09ms         | 1.04    | load.ugrid.BasicLoadingTime.time_load_mesh(1)                                                        |
|          | 15.7±0.2ms           | 15.9±0.5ms          | 1.01    | load.ugrid.BasicLoadingTime.time_load_mesh(200000)                                                   |
|          | 17.3±0.3ms           | 17.8±0.5ms          | 1.03    | load.ugrid.Callback.time_load_file_callback(1)                                                       |
|          | 42.8±0.6ms           | 45.9±0.4ms          | 1.07    | load.ugrid.Callback.time_load_file_callback(200000)                                                  |
|          | 17.5±0.5ms           | 18.0±0.5ms          | 1.02    | load.ugrid.CallbackTime.time_load_file_callback(1)                                                   |
|          | 20.6±0.4ms           | 20.6±0.3ms          | 1.00    | load.ugrid.CallbackTime.time_load_file_callback(200000)                                              |
|          | 2.52±0.1ms           | 2.68±0.08ms         | 1.06    | load.ugrid.DataRealisation.time_realise_data(10000)                                                  |
|          | 5.21±0.09ms          | 5.28±0.1ms          | 1.01    | load.ugrid.DataRealisation.time_realise_data(200000)                                                 |
|          | 36.8±1ms             | 36.3±0.4ms          | 0.99    | load.ugrid.DataRealisationTime.time_realise_data(10000)                                              |
|          | 792±4ms              | 785±6ms             | 0.99    | load.ugrid.DataRealisationTime.time_realise_data(200000)                                             |
|          | 101±0.5ns            | 102±2ns             | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_AncillaryVariableMetadata_fields                |
|          | 895±7ns              | 906±10ns            | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_AncillaryVariableMetadata_values                |
|          | 102±0.6ns            | 101±0.7ns           | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_BaseMetadata_fields                             |
|          | 908±8ns              | 898±10ns            | 0.99    | metadata_manager_factory.MetadataManagerFactory.time_BaseMetadata_values                             |
|          | 102±1ns              | 101±0.8ns           | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_CellMeasuresMetadata_fields                     |
|          | 1.00±0.01μs          | 1.00±0μs            | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_CellMeasuresMetadata_values                     |
|          | 101±0.8ns            | 101±0.2ns           | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_CoordMetadata_fields                            |
|          | 1.06±0.01μs          | 1.08±0.01μs         | 1.02    | metadata_manager_factory.MetadataManagerFactory.time_CoordMetadata_values                            |
|          | 101±0.8ns            | 102±0.4ns           | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_CubeMetadata_fields                             |
|          | 998±4ns              | 998±10ns            | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_CubeMetadata_values                             |
|          | 101±0.5ns            | 101±0.4ns           | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_DimCoordMetadata_fields                         |
|          | 1.13±0.01μs          | 1.13±0.01μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_DimCoordMetadata_values                         |
|          | 990±6ns              | 1.01±0.01μs         | 1.02    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(1)            |
|          | 6.73±0.02μs          | 6.85±0.08μs         | 1.02    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(10)           |
|          | 63.4±0.5μs           | 65.4±0.6μs          | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(100)          |
|          | 991±9ns              | 999±8ns             | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(1)                         |
|          | 6.71±0.03μs          | 6.89±0.06μs         | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(10)                        |
|          | 63.5±0.7μs           | 65.4±0.9μs          | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(100)                       |
|          | 1.03±0.01μs          | 1.04±0.01μs         | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(1)                  |
|          | 7.12±0.05μs          | 7.32±0.08μs         | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(10)                 |
|          | 67.9±1μs             | 70.0±0.3μs          | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(100)                |
|          | 1.09±0.02μs          | 1.09±0.01μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(1)                        |
|          | 7.58±0.05μs          | 7.72±0.05μs         | 1.02    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(10)                       |
|          | 71.7±0.3μs           | 73.4±0.3μs          | 1.02    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(100)                      |
|          | 1.03±0.01μs          | 1.04±0μs            | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(1)                         |
|          | 7.25±0.07μs          | 7.30±0.09μs         | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(10)                        |
|          | 68.2±0.3μs           | 69.8±0.9μs          | 1.02    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(100)                       |
|          | 1.11±0.01μs          | 1.15±0.01μs         | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(1)                     |
|          | 7.90±0.06μs          | 8.19±0.03μs         | 1.04    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(10)                    |
|          | 75.8±0.9μs           | 78.3±0.5μs          | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(100)                   |
|          | 106±0.2ns            | 108±2ns             | 1.02    | mixin.CFVariableMixin.time_get_attributes                                                            |
|          | 106±0.6ns            | 109±2ns             | 1.03    | mixin.CFVariableMixin.time_get_long_name                                                             |
|          | 968±9ns              | 965±10ns            | 1.00    | mixin.CFVariableMixin.time_get_metadata                                                              |
|          | 108±3ns              | 107±3ns             | 1.00    | mixin.CFVariableMixin.time_get_standard_name                                                         |
|          | 107±0.9ns            | 110±2ns             | 1.03    | mixin.CFVariableMixin.time_get_units                                                                 |
|          | 111±2ns              | 108±3ns             | 0.98    | mixin.CFVariableMixin.time_get_var_name                                                              |
|          | 698±10ns             | 709±20ns            | 1.02    | mixin.CFVariableMixin.time_set_attributes                                                            |
|          | 114±0.7ns            | 115±2ns             | 1.01    | mixin.CFVariableMixin.time_set_long_name                                                             |
|          | 3.47±0.04μs          | 3.45±0.03μs         | 0.99    | mixin.CFVariableMixin.time_set_metadata__dict                                                        |
|          | 4.45±0.02μs          | 4.34±0.04μs         | 0.98    | mixin.CFVariableMixin.time_set_metadata__metadata                                                    |
|          | 4.34±0.03μs          | 4.23±0.03μs         | 0.97    | mixin.CFVariableMixin.time_set_metadata__tuple                                                       |
|          | 569±10ns             | 544±6ns             | 0.96    | mixin.CFVariableMixin.time_set_standard_name                                                         |
|          | 409±2ns              | 415±3ns             | 1.02    | mixin.CFVariableMixin.time_set_units                                                                 |
|          | 441±5ns              | 437±2ns             | 0.99    | mixin.CFVariableMixin.time_set_var_name                                                              |
|          | 363±1ms              | 364±2ms             | 1.00    | plot.AuxSort.time_aux_sort                                                                           |
|          | 76.9±3ms             | 78.2±5ms            | 1.02    | regridding.CurvilinearRegridding.time_regrid_pic                                                     |
|          | 95.0±1ms             | 96.8±0.8ms          | 1.02    | regridding.HorizontalChunkedRegridding.time_regrid_area_w                                            |
|          | 46.3±1ms             | 48.7±5ms            | 1.05    | regridding.HorizontalChunkedRegridding.time_regrid_area_w_new_grid                                   |
|          | 3.76±0.05ms          | 4.03±0.04ms         | 1.07    | save.NetcdfSave.time_netcdf_save_cube(50, False)                                                     |
|          | 86.0±0.6ms           | 93.2±0.9ms          | 1.08    | save.NetcdfSave.time_netcdf_save_cube(50, True)                                                      |
|          | 53.1±0.4ms           | 53.4±1ms            | 1.01    | save.NetcdfSave.time_netcdf_save_cube(600, False)                                                    |
|          | 576±4ms              | 585±4ms             | 1.02    | save.NetcdfSave.time_netcdf_save_cube(600, True)                                                     |
|          | 101±0.7ns            | 101±1ns             | 1.01    | save.NetcdfSave.time_netcdf_save_mesh(50, False)                                                     |
|          | 71.5±0.6ms           | 77.2±0.7ms          | 1.08    | save.NetcdfSave.time_netcdf_save_mesh(50, True)                                                      |
|          | 101±0.6ns            | 102±0.8ns           | 1.00    | save.NetcdfSave.time_netcdf_save_mesh(600, False)                                                    |
|          | 510±4ms              | 516±4ms             | 1.01    | save.NetcdfSave.time_netcdf_save_mesh(600, True)                                                     |
|          | 37.1±0.9ms           | 40.8±0.9ms          | 1.10    | stats.PearsonR.time_lazy                                                                             |
|          | 18.8±0.2ms           | 18.9±0.3ms          | 1.01    | stats.PearsonR.time_real                                                                             |
|          | 22.8±0.5ms           | 22.8±0.8ms          | 1.00    | trajectory.TrajectoryInterpolation.time_trajectory_linear                                            |
|          | 59.9±0.6ms           | 58.6±0.6ms          | 0.98    | trajectory.TrajectoryInterpolation.time_trajectory_nearest                                           |

Benchmarks that have got worse:

| Change   | Before [c6151e81]    | After [df5a7525]    |   Ratio | Benchmark (Parameter)                                      |
|----------|----------------------|---------------------|---------|------------------------------------------------------------|
| +        | 1.99±0.1ms           | 2.43±0.06ms         |    1.22 | experimental.ugrid.Connectivity.time_create(1000000)       |
| +        | 1.51±0.01ms          | 1.85±0.03ms         |    1.22 | experimental.ugrid.Connectivity.time_create(6)             |
| +        | 247±5μs              | 352±3μs             |    1.43 | experimental.ugrid.Mesh.time_add_connectivities(6)         |
| +        | 297±3μs              | 401±8μs             |    1.35 | experimental.ugrid.Mesh.time_create(6)                     |
| +        | 293±9μs              | 397±9μs             |    1.36 | experimental.ugrid.MeshLazy.time_add_connectivities(6)     |
| +        | 341±10μs             | 444±10μs            |    1.3  | experimental.ugrid.MeshLazy.time_create(6)                 |
| +        | 285±4ms              | 346±4ms             |    1.21 | load.StructuredFF.time_structured_load((2, 2, 1000), True) |
```

</details>

Generated by GHA run [`8118704848`](https://github.com/SciTools/iris/actions/runs/8118704848)


# :stopwatch: Performance Benchmark Report: f4e46f19

<details>
<summary>Performance shifts</summary>

```
| Change   | Before [c6151e81]    | After [f4e46f19]    |   Ratio | Benchmark (Parameter)                                      |
|----------|----------------------|---------------------|---------|------------------------------------------------------------|
| +        | 1.51±0.02ms          | 1.85±0.02ms         |    1.22 | experimental.ugrid.Connectivity.time_create(6)             |
| +        | 2.62±0.03ms          | 3.20±0.06ms         |    1.22 | experimental.ugrid.ConnectivityLazy.time_create(6)         |
| +        | 258±4μs              | 354±8μs             |    1.37 | experimental.ugrid.Mesh.time_add_connectivities(6)         |
| +        | 298±2μs              | 405±5μs             |    1.36 | experimental.ugrid.Mesh.time_create(6)                     |
| +        | 294±10μs             | 400±10μs            |    1.36 | experimental.ugrid.MeshLazy.time_add_connectivities(6)     |
| +        | 340±8μs              | 447±10μs            |    1.31 | experimental.ugrid.MeshLazy.time_create(6)                 |
| +        | 285±2ms              | 351±5ms             |    1.23 | load.StructuredFF.time_structured_load((2, 2, 1000), True) |
```

</details>

<details>
<summary>Full benchmark results</summary>

```

Benchmarks that have stayed the same:

| Change   | Before [c6151e81]    | After [f4e46f19]    | Ratio   | Benchmark (Parameter)                                                                                |
|----------|----------------------|---------------------|---------|------------------------------------------------------------------------------------------------------|
|          | n/a                  | n/a                 | n/a     | aux_factory.FactoryCommon.time_create                                                                |
|          | 4.37±0.05μs          | 4.28±0.02μs         | 0.98    | aux_factory.HybridHeightFactory.time_create                                                          |
|          | 5.01±0.09μs          | 4.97±0.06μs         | 0.99    | coords.AncillaryVariable.time_create                                                                 |
|          | 427±4ns              | 425±6ns             | 1.00    | coords.AuxCoord.time_bounds                                                                          |
|          | 9.00±0.1μs           | 8.91±0.03μs         | 0.99    | coords.AuxCoord.time_create                                                                          |
|          | 408±3ns              | 405±30ns            | 0.99    | coords.AuxCoord.time_points                                                                          |
|          | 231±20μs             | 242±20μs            | 1.05    | coords.AuxCoordLazy.time_bounds                                                                      |
|          | 12.9±0.6μs           | 13.1±0.4μs          | 1.02    | coords.AuxCoordLazy.time_create                                                                      |
|          | 227±20μs             | 240±20μs            | 1.06    | coords.AuxCoordLazy.time_points                                                                      |
|          | 5.36±0.05μs          | 5.43±0.08μs         | 1.01    | coords.CellMeasure.time_create                                                                       |
|          | 1.09±0.01μs          | 1.10±0.01μs         | 1.00    | coords.CellMethod.time_create                                                                        |
|          | n/a                  | n/a                 | n/a     | coords.CoordCommon.time_create                                                                       |
|          | 109±0.9μs            | 110±0.9μs           | 1.01    | coords.DimCoord.time_create                                                                          |
|          | 31.9±0.6μs           | 33.2±0.5μs          | 1.04    | coords.DimCoord.time_regular                                                                         |
|          | 380±6ms              | 380±3ms             | 1.00    | cube.Aggregation.time_aggregated_by                                                                  |
|          | 59.9±0.6μs           | 59.3±1μs            | 0.99    | cube.AncillaryVariable.time_add                                                                      |
|          | 11.6±0.2μs           | 11.3±0.3μs          | 0.97    | cube.AncillaryVariable.time_create                                                                   |
|          | 67.1±0.7μs           | 66.8±0.8μs          | 1.00    | cube.AuxCoord.time_add                                                                               |
|          | 9.56±0.1μs           | 9.45±0.1μs          | 0.99    | cube.AuxCoord.time_create                                                                            |
|          | 5.94±0.06μs          | 6.05±0.08μs         | 1.02    | cube.AuxCoord.time_return_coord_dims                                                                 |
|          | 4.49±0.04μs          | 4.47±0.07μs         | 0.99    | cube.AuxCoord.time_return_coords                                                                     |
|          | 40.5±1μs             | 39.6±0.5μs          | 0.98    | cube.AuxFactory.time_add                                                                             |
|          | 12.4±0.4μs           | 12.4±0.3μs          | 1.00    | cube.AuxFactory.time_create                                                                          |
|          | 59.5±1μs             | 58.0±0.3μs          | 0.98    | cube.CellMeasure.time_add                                                                            |
|          | 11.4±0.2μs           | 11.5±0.4μs          | 1.01    | cube.CellMeasure.time_create                                                                         |
|          | 52.0±0.5μs           | 52.9±0.2μs          | 1.02    | cube.CellMethod.time_add                                                                             |
|          | 7.19±0.09μs          | 7.25±0.1μs          | 1.01    | cube.CellMethod.time_create                                                                          |
|          | n/a                  | n/a                 | n/a     | cube.ComponentCommon.time_add                                                                        |
|          | n/a                  | n/a                 | n/a     | cube.ComponentCommon.time_create                                                                     |
|          | 130±0.4ms            | 130±0.5ms           | 1.00    | cube.Concatenate.time_concatenate                                                                    |
|          | 6.70±0.1μs           | 6.75±0.07μs         | 1.01    | cube.Cube.time_basic                                                                                 |
|          | 57.9±0.2ns           | 58.0±0.4ns          | 1.00    | cube.Cube.time_rename                                                                                |
|          | 61.2±0.5μs           | 60.6±0.7μs          | 0.99    | cube.Equality.time_equality                                                                          |
|          | 326±3ms              | 330±2ms             | 1.01    | cube.Merge.time_merge                                                                                |
|          | 26.7±1μs             | 26.6±2μs            | 1.00    | cube.MeshCoord.time_add(10000)                                                                       |
|          | 30.9±2μs             | 29.5±1μs            | 0.95    | cube.MeshCoord.time_add(1000000)                                                                     |
|          | 25.0±1μs             | 24.6±0.9μs          | 0.98    | cube.MeshCoord.time_add(6)                                                                           |
|          | 19.6±0.3μs           | 19.6±0.3μs          | 1.00    | cube.MeshCoord.time_create(10000)                                                                    |
|          | 19.0±0.3μs           | 19.7±0.3μs          | 1.04    | cube.MeshCoord.time_create(1000000)                                                                  |
|          | 18.8±0.3μs           | 19.0±0.3μs          | 1.01    | cube.MeshCoord.time_create(6)                                                                        |
|          | 42.2±4μs             | 42.3±5μs            | 1.00    | cube.MeshCoord.time_remove(10000)                                                                    |
|          | 60.1±3μs             | 59.6±3μs            | 0.99    | cube.MeshCoord.time_remove(1000000)                                                                  |
|          | 41.0±2μs             | 41.1±3μs            | 1.00    | cube.MeshCoord.time_remove(6)                                                                        |
|          | 2.04±0.2ms           | 2.51±0.09ms         | ~1.23   | experimental.ugrid.Connectivity.time_create(1000000)                                                 |
|          | 597±8ns              | 603±5ns             | 1.01    | experimental.ugrid.Connectivity.time_indices(1000000)                                                |
|          | 600±5ns              | 605±7ns             | 1.01    | experimental.ugrid.Connectivity.time_indices(6)                                                      |
|          | 20.2±1ms             | 23.1±2ms            | 1.14    | experimental.ugrid.Connectivity.time_location_lengths(1000000)                                       |
|          | 2.25±0.01ms          | 2.69±0.05ms         | 1.20    | experimental.ugrid.Connectivity.time_location_lengths(6)                                             |
|          | 23.1±3ms             | 27.8±3ms            | ~1.20   | experimental.ugrid.Connectivity.time_validate_indices(1000000)                                       |
|          | 3.38±0.05ms          | 3.96±0.03ms         | 1.17    | experimental.ugrid.Connectivity.time_validate_indices(6)                                             |
|          | 3.46±0.07ms          | 4.03±0.1ms          | 1.16    | experimental.ugrid.ConnectivityLazy.time_create(1000000)                                             |
|          | 241±7μs              | 252±4μs             | 1.05    | experimental.ugrid.ConnectivityLazy.time_indices(1000000)                                            |
|          | 239±10μs             | 252±8μs             | 1.05    | experimental.ugrid.ConnectivityLazy.time_indices(6)                                                  |
|          | 19.9±0.5ms           | 20.3±0.7ms          | 1.02    | experimental.ugrid.ConnectivityLazy.time_location_lengths(1000000)                                   |
|          | 2.55±0.04ms          | 2.88±0.03ms         | 1.13    | experimental.ugrid.ConnectivityLazy.time_location_lengths(6)                                         |
|          | 22.2±0.8ms           | 22.6±0.8ms          | 1.02    | experimental.ugrid.ConnectivityLazy.time_validate_indices(1000000)                                   |
|          | 3.63±0.05ms          | 4.25±0.05ms         | 1.17    | experimental.ugrid.ConnectivityLazy.time_validate_indices(6)                                         |
|          | 12.7±0.05μs          | 12.6±0.1μs          | 0.99    | experimental.ugrid.Mesh.time_add_connectivities(1000000)                                             |
|          | 4.94±0.1μs           | 4.92±0.07μs         | 1.00    | experimental.ugrid.Mesh.time_add_coords(1000000)                                                     |
|          | 4.90±0.1μs           | 4.77±0.1μs          | 0.97    | experimental.ugrid.Mesh.time_add_coords(6)                                                           |
|          | 5.14±0.05μs          | 5.06±0.07μs         | 0.99    | experimental.ugrid.Mesh.time_connectivities(1000000)                                                 |
|          | 5.09±0.08μs          | 5.05±0.04μs         | 0.99    | experimental.ugrid.Mesh.time_connectivities(6)                                                       |
|          | 5.90±0.05μs          | 5.88±0.05μs         | 1.00    | experimental.ugrid.Mesh.time_coords(1000000)                                                         |
|          | 5.89±0.08μs          | 5.85±0.05μs         | 0.99    | experimental.ugrid.Mesh.time_coords(6)                                                               |
|          | 46.7±0.9μs           | 45.5±0.7μs          | 0.98    | experimental.ugrid.Mesh.time_create(1000000)                                                         |
|          | 71.8±2ms             | 74.1±2ms            | 1.03    | experimental.ugrid.Mesh.time_eq(1000000)                                                             |
|          | 273±2μs              | 273±5μs             | 1.00    | experimental.ugrid.Mesh.time_eq(6)                                                                   |
|          | 4.95±0.06μs          | 4.97±0.07μs         | 1.00    | experimental.ugrid.Mesh.time_remove_connectivities(1000000)                                          |
|          | 5.01±0.07μs          | 4.97±0.07μs         | 0.99    | experimental.ugrid.Mesh.time_remove_connectivities(6)                                                |
|          | 7.31±0.1μs           | 7.42±0.05μs         | 1.01    | experimental.ugrid.Mesh.time_remove_coords(1000000)                                                  |
|          | 7.29±0.06μs          | 7.45±0.08μs         | 1.02    | experimental.ugrid.Mesh.time_remove_coords(6)                                                        |
|          | 10.0±0.06μs          | 10.8±0.08μs         | 1.07    | experimental.ugrid.MeshCoord.time_bounds(10000)                                                      |
|          | 117±1ms              | 118±2ms             | 1.01    | experimental.ugrid.MeshCoord.time_bounds(1000000)                                                    |
|          | 5.34±0.04μs          | 5.40±0.03μs         | 1.01    | experimental.ugrid.MeshCoord.time_bounds(6)                                                          |
|          | 3.21±0.02ms          | 3.62±0.06ms         | 1.13    | experimental.ugrid.MeshCoord.time_create(10000)                                                      |
|          | 3.26±0.03ms          | 3.62±0.06ms         | 1.11    | experimental.ugrid.MeshCoord.time_create(1000000)                                                    |
|          | 199±2μs              | 200±4μs             | 1.00    | experimental.ugrid.MeshCoord.time_create(6)                                                          |
|          | 3.63±0.01μs          | 3.56±0.03μs         | 0.98    | experimental.ugrid.MeshCoord.time_points(10000)                                                      |
|          | 4.14±0.04μs          | 4.12±0.06μs         | 0.99    | experimental.ugrid.MeshCoord.time_points(1000000)                                                    |
|          | 2.93±0.02μs          | 2.89±0.04μs         | 0.99    | experimental.ugrid.MeshCoord.time_points(6)                                                          |
|          | 6.80±0.06ms          | 7.39±0.1ms          | 1.09    | experimental.ugrid.MeshCoordLazy.time_bounds(10000)                                                  |
|          | 118±1ms              | 119±4ms             | 1.01    | experimental.ugrid.MeshCoordLazy.time_bounds(1000000)                                                |
|          | 11.7±0.4μs           | 11.7±0.4μs          | 1.00    | experimental.ugrid.MeshCoordLazy.time_bounds(6)                                                      |
|          | 3.25±0.04ms          | 3.71±0.04ms         | 1.14    | experimental.ugrid.MeshCoordLazy.time_create(10000)                                                  |
|          | 3.32±0.04ms          | 3.69±0.03ms         | 1.11    | experimental.ugrid.MeshCoordLazy.time_create(1000000)                                                |
|          | 242±10μs             | 239±10μs            | 0.99    | experimental.ugrid.MeshCoordLazy.time_create(6)                                                      |
|          | 2.37±0.06ms          | 2.46±0.06ms         | 1.04    | experimental.ugrid.MeshCoordLazy.time_points(10000)                                                  |
|          | 4.44±0.07ms          | 4.52±0.07ms         | 1.02    | experimental.ugrid.MeshCoordLazy.time_points(1000000)                                                |
|          | 7.71±0.3μs           | 7.79±0.5μs          | 1.01    | experimental.ugrid.MeshCoordLazy.time_points(6)                                                      |
|          | 32.7±1μs             | 32.4±1μs            | 0.99    | experimental.ugrid.MeshLazy.time_add_connectivities(1000000)                                         |
|          | 18.7±0.6μs           | 18.7±1μs            | 1.00    | experimental.ugrid.MeshLazy.time_add_coords(1000000)                                                 |
|          | 15.0±0.8μs           | 15.8±1μs            | 1.05    | experimental.ugrid.MeshLazy.time_add_coords(6)                                                       |
|          | 16.7±0.5μs           | 16.4±0.5μs          | 0.99    | experimental.ugrid.MeshLazy.time_connectivities(1000000)                                             |
|          | 16.2±0.4μs           | 16.0±0.4μs          | 0.98    | experimental.ugrid.MeshLazy.time_connectivities(6)                                                   |
|          | 19.0±0.5μs           | 18.8±0.6μs          | 0.99    | experimental.ugrid.MeshLazy.time_coords(1000000)                                                     |
|          | 18.3±0.4μs           | 18.5±0.4μs          | 1.01    | experimental.ugrid.MeshLazy.time_coords(6)                                                           |
|          | 78.5±2μs             | 76.1±2μs            | 0.97    | experimental.ugrid.MeshLazy.time_create(1000000)                                                     |
|          | 71.4±0.9ms           | 73.7±2ms            | 1.03    | experimental.ugrid.MeshLazy.time_eq(1000000)                                                         |
|          | 337±10μs             | 337±10μs            | 1.00    | experimental.ugrid.MeshLazy.time_eq(6)                                                               |
|          | 17.9±0.5μs           | 17.8±0.8μs          | 1.00    | experimental.ugrid.MeshLazy.time_remove_connectivities(1000000)                                      |
|          | 17.1±0.4μs           | 16.7±0.5μs          | 0.98    | experimental.ugrid.MeshLazy.time_remove_connectivities(6)                                            |
|          | 31.4±0.8μs           | 31.3±1μs            | 0.99    | experimental.ugrid.MeshLazy.time_remove_coords(1000000)                                              |
|          | 29.4±0.9μs           | 29.1±0.8μs          | 0.99    | experimental.ugrid.MeshLazy.time_remove_coords(6)                                                    |
|          | n/a                  | n/a                 | n/a     | experimental.ugrid.UGridCommon.time_create(1000000)                                                  |
|          | n/a                  | n/a                 | n/a     | experimental.ugrid.UGridCommon.time_create(6)                                                        |
|          | 509±4ns              | 495±3ns             | 0.97    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(50)               |
|          | 250±2ms              | 249±2ms             | 1.00    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(500)              |
|          | 11.6±0.08ms          | 13.4±0.2ms          | 1.16    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(50)            |
|          | 13.6±0.3ms           | 15.4±0.8ms          | 1.13    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(500)           |
|          | 5.0                  | 5.0                 | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(50)  |
|          | 5.0                  | 5.0                 | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(500) |
|          | 124±0.6ms            | 132±0.6ms           | 1.06    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(50)          |
|          | 724±7ms              | 733±4ms             | 1.01    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(500)         |
|          | 86.1±0.6ms           | 94.7±0.9ms          | 1.10    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(50)                              |
|          | 680±3ms              | 687±4ms             | 1.01    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(500)                             |
|          | 2.1752849999999997   | 2.1752849999999997  | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(50)                   |
|          | 216.01528499999998   | 216.01528499999998  | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(500)                  |
|          | 567±2μs              | 577±9μs             | 1.02    | import_iris.Iris.time__concatenate                                                                   |
|          | 163±1μs              | 164±2μs             | 1.01    | import_iris.Iris.time__constraints                                                                   |
|          | 101±1μs              | 101±0.4μs           | 1.00    | import_iris.Iris.time__data_manager                                                                  |
|          | 85.1±0.5μs           | 85.0±0.6μs          | 1.00    | import_iris.Iris.time__deprecation                                                                   |
|          | 109±1μs              | 109±1μs             | 1.00    | import_iris.Iris.time__lazy_data                                                                     |
|          | 788±7μs              | 787±8μs             | 1.00    | import_iris.Iris.time__merge                                                                         |
|          | 71.8±0.6μs           | 72.7±1μs            | 1.01    | import_iris.Iris.time__representation                                                                |
|          | 428±3μs              | 431±4μs             | 1.01    | import_iris.Iris.time_analysis                                                                       |
|          | 126±0.9μs            | 129±2μs             | 1.02    | import_iris.Iris.time_analysis__area_weighted                                                        |
|          | 99.9±2μs             | 100±0.8μs           | 1.00    | import_iris.Iris.time_analysis__grid_angles                                                          |
|          | 218±5μs              | 216±4μs             | 0.99    | import_iris.Iris.time_analysis__interpolation                                                        |
|          | 169±2μs              | 171±1μs             | 1.01    | import_iris.Iris.time_analysis__regrid                                                               |
|          | 101±0.7μs            | 102±2μs             | 1.01    | import_iris.Iris.time_analysis__scipy_interpolate                                                    |
|          | 127±3μs              | 126±2μs             | 0.99    | import_iris.Iris.time_analysis_calculus                                                              |
|          | 283±2μs              | 278±2μs             | 0.98    | import_iris.Iris.time_analysis_cartography                                                           |
|          | 83.5±0.4μs           | 83.9±0.8μs          | 1.00    | import_iris.Iris.time_analysis_geomerty                                                              |
|          | 201±2μs              | 197±2μs             | 0.98    | import_iris.Iris.time_analysis_maths                                                                 |
|          | 90.3±0.4μs           | 90.4±0.6μs          | 1.00    | import_iris.Iris.time_analysis_stats                                                                 |
|          | 166±2μs              | 164±2μs             | 0.99    | import_iris.Iris.time_analysis_trajectory                                                            |
|          | 265±4μs              | 267±3μs             | 1.01    | import_iris.Iris.time_aux_factory                                                                    |
|          | 79.9±0.5μs           | 80.3±0.5μs          | 1.00    | import_iris.Iris.time_common                                                                         |
|          | 151±1μs              | 153±2μs             | 1.01    | import_iris.Iris.time_common_lenient                                                                 |
|          | 871±10μs             | 875±8μs             | 1.01    | import_iris.Iris.time_common_metadata                                                                |
|          | 123±2μs              | 123±0.6μs           | 1.00    | import_iris.Iris.time_common_mixin                                                                   |
|          | 1.02±0.01ms          | 1.02±0.01ms         | 1.00    | import_iris.Iris.time_common_resolve                                                                 |
|          | 186±4μs              | 185±1μs             | 0.99    | import_iris.Iris.time_config                                                                         |
|          | 107±1μs              | 106±0.9μs           | 1.00    | import_iris.Iris.time_coord_categorisation                                                           |
|          | 317±3μs              | 320±6μs             | 1.01    | import_iris.Iris.time_coord_systems                                                                  |
|          | 632±8μs              | 632±6μs             | 1.00    | import_iris.Iris.time_coords                                                                         |
|          | 581±10μs             | 587±7μs             | 1.01    | import_iris.Iris.time_cube                                                                           |
|          | 204±3μs              | 204±2μs             | 1.00    | import_iris.Iris.time_exceptions                                                                     |
|          | 72.9±0.7μs           | 72.3±0.3μs          | 0.99    | import_iris.Iris.time_experimental                                                                   |
|          | 196±2μs              | 195±2μs             | 0.99    | import_iris.Iris.time_fileformats                                                                    |
|          | 224±3μs              | 225±4μs             | 1.01    | import_iris.Iris.time_fileformats__ff                                                                |
|          | 2.40±0.01ms          | 2.41±0.02ms         | 1.00    | import_iris.Iris.time_fileformats__ff_cross_references                                               |
|          | 73.6±0.3μs           | 73.7±0.2μs          | 1.00    | import_iris.Iris.time_fileformats__pp_lbproc_pairs                                                   |
|          | 107±1μs              | 105±0.8μs           | 0.98    | import_iris.Iris.time_fileformats_abf                                                                |
|          | 313±1μs              | 320±3μs             | 1.02    | import_iris.Iris.time_fileformats_cf                                                                 |
|          | 5.33±0.03ms          | 5.31±0.06ms         | 1.00    | import_iris.Iris.time_fileformats_dot                                                                |
|          | 68.4±0.5μs           | 69.0±0.9μs          | 1.01    | import_iris.Iris.time_fileformats_name                                                               |
|          | 236±3μs              | 236±2μs             | 1.00    | import_iris.Iris.time_fileformats_name_loaders                                                       |
|          | 113±1μs              | 113±1μs             | 1.01    | import_iris.Iris.time_fileformats_netcdf                                                             |
|          | 112±1μs              | 112±2μs             | 1.00    | import_iris.Iris.time_fileformats_nimrod                                                             |
|          | 189±3μs              | 189±3μs             | 1.00    | import_iris.Iris.time_fileformats_nimrod_load_rules                                                  |
|          | 670±7μs              | 672±5μs             | 1.00    | import_iris.Iris.time_fileformats_pp                                                                 |
|          | 162±6μs              | 161±2μs             | 0.99    | import_iris.Iris.time_fileformats_pp_load_rules                                                      |
|          | 121±1μs              | 124±2μs             | 1.03    | import_iris.Iris.time_fileformats_pp_save_rules                                                      |
|          | 441±4μs              | 438±3μs             | 0.99    | import_iris.Iris.time_fileformats_rules                                                              |
|          | 191±3μs              | 197±4μs             | 1.03    | import_iris.Iris.time_fileformats_structured_array_identification                                    |
|          | 79.7±0.5μs           | 79.0±0.6μs          | 0.99    | import_iris.Iris.time_fileformats_um                                                                 |
|          | 151±2μs              | 153±2μs             | 1.02    | import_iris.Iris.time_fileformats_um__fast_load                                                      |
|          | 130±1μs              | 131±0.5μs           | 1.00    | import_iris.Iris.time_fileformats_um__fast_load_structured_fields                                    |
|          | 70.8±0.7μs           | 70.7±0.6μs          | 1.00    | import_iris.Iris.time_fileformats_um__ff_replacement                                                 |
|          | 78.4±2μs             | 77.8±0.5μs          | 0.99    | import_iris.Iris.time_fileformats_um__optimal_array_structuring                                      |
|          | 866±9μs              | 859±3μs             | 0.99    | import_iris.Iris.time_fileformats_um_cf_map                                                          |
|          | 127±1μs              | 126±0.9μs           | 1.00    | import_iris.Iris.time_io                                                                             |
|          | 159±1μs              | 159±2μs             | 1.00    | import_iris.Iris.time_io_format_picker                                                               |
|          | 194±2μs              | 193±1μs             | 1.00    | import_iris.Iris.time_iris                                                                           |
|          | 119±3μs              | 119±0.5μs           | 1.00    | import_iris.Iris.time_iterate                                                                        |
|          | 8.17±0.06ms          | 8.13±0.04ms         | 1.00    | import_iris.Iris.time_palette                                                                        |
|          | 302±3μs              | 299±3μs             | 0.99    | import_iris.Iris.time_plot                                                                           |
|          | 94.3±0.5μs           | 94.1±0.7μs          | 1.00    | import_iris.Iris.time_quickplot                                                                      |
|          | 1.94±0.01ms          | 1.89±0.01ms         | 0.97    | import_iris.Iris.time_std_names                                                                      |
|          | 1.70±0.01ms          | 1.71±0.02ms         | 1.01    | import_iris.Iris.time_symbols                                                                        |
|          | 41.5±0.9ms           | 41.9±0.5ms          | 1.01    | import_iris.Iris.time_tests                                                                          |
|          | 219±2μs              | 219±2μs             | 1.00    | import_iris.Iris.time_third_party_cartopy                                                            |
|          | 4.79±0.03ms          | 4.76±0.02ms         | 0.99    | import_iris.Iris.time_third_party_cf_units                                                           |
|          | 103±2μs              | 103±2μs             | 1.01    | import_iris.Iris.time_third_party_cftime                                                             |
|          | 2.66±0.03ms          | 2.63±0.01ms         | 0.99    | import_iris.Iris.time_third_party_matplotlib                                                         |
|          | 1.01±0.01ms          | 1.02±0.01ms         | 1.00    | import_iris.Iris.time_third_party_numpy                                                              |
|          | 153±0.9μs            | 153±2μs             | 1.00    | import_iris.Iris.time_third_party_scipy                                                              |
|          | 93.4±2μs             | 92.1±0.9μs          | 0.99    | import_iris.Iris.time_time                                                                           |
|          | 288±4μs              | 288±4μs             | 1.00    | import_iris.Iris.time_util                                                                           |
|          | 82.4±0.6μs           | 80.7±0.8μs          | 0.98    | iterate.IZip.time_izip                                                                               |
|          | 7.44±0.03ms          | 7.78±0.1ms          | 1.05    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'FF')                                           |
|          | 22.3±0.3ms           | 22.6±0.3ms          | 1.01    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'NetCDF')                                       |
|          | 8.24±0.1ms           | 8.54±0.05ms         | 1.04    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'PP')                                           |
|          | 7.51±0.03ms          | 7.83±0.04ms         | 1.04    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'FF')                                            |
|          | 20.0±0.2ms           | 20.0±0.2ms          | 1.00    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'NetCDF')                                        |
|          | 8.22±0.08ms          | 8.64±0.1ms          | 1.05    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'PP')                                            |
|          | 1.24±0.02s           | 1.32±0.01s          | 1.06    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'FF')                                             |
|          | 19.2±0.2ms           | 19.3±0.1ms          | 1.01    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'NetCDF')                                         |
|          | 1.40±0.01s           | 1.46±0.01s          | 1.04    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'PP')                                             |
|          | 1.25±0.01s           | 1.31±0.01s          | 1.05    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'FF')                                              |
|          | 19.1±0.2ms           | 19.3±0.2ms          | 1.01    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'NetCDF')                                          |
|          | 1.40±0.02s           | 1.45±0.02s          | 1.04    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'PP')                                              |
|          | 3.60±0.03ms          | 3.71±0.02ms         | 1.03    | load.LoadAndRealise.time_load((50, 50, 2), False, 'FF')                                              |
|          | 18.7±0.2ms           | 18.7±0.2ms          | 1.00    | load.LoadAndRealise.time_load((50, 50, 2), False, 'NetCDF')                                          |
|          | 3.85±0.03ms          | 3.99±0.05ms         | 1.04    | load.LoadAndRealise.time_load((50, 50, 2), False, 'PP')                                              |
|          | 3.62±0.01ms          | 3.76±0.03ms         | 1.04    | load.LoadAndRealise.time_load((50, 50, 2), True, 'FF')                                               |
|          | 18.5±0.2ms           | 18.7±0.3ms          | 1.01    | load.LoadAndRealise.time_load((50, 50, 2), True, 'NetCDF')                                           |
|          | 3.90±0.04ms          | 3.99±0.03ms         | 1.02    | load.LoadAndRealise.time_load((50, 50, 2), True, 'PP')                                               |
|          | 33.0±2ms             | 33.9±3ms            | 1.03    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'FF')                                        |
|          | 19.4±0.1ms           | 18.8±0.5ms          | 0.97    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'NetCDF')                                    |
|          | 12.8±1ms             | 13.2±0.9ms          | 1.03    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'PP')                                        |
|          | 25.2±1ms             | 25.3±1ms            | 1.00    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'FF')                                         |
|          | 72.4±1ms             | 72.4±1ms            | 1.00    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'NetCDF')                                     |
|          | 25.1±1ms             | 25.6±1ms            | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'PP')                                         |
|          | 375±3ms              | 434±2ms             | 1.16    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'FF')                                          |
|          | 2.72±0.09ms          | 2.73±0.08ms         | 1.00    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'NetCDF')                                      |
|          | 382±1ms              | 439±2ms             | 1.15    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'PP')                                          |
|          | 381±1ms              | 439±2ms             | 1.15    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'FF')                                           |
|          | 2.77±0.1ms           | 2.76±0.1ms          | 0.99    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'NetCDF')                                       |
|          | 386±3ms              | 446±3ms             | 1.15    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'PP')                                           |
|          | 1.36±0.08ms          | 1.54±0.06ms         | 1.13    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'FF')                                           |
|          | 2.65±0.09ms          | 2.77±0.09ms         | 1.04    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'NetCDF')                                       |
|          | 1.39±0.08ms          | 1.55±0.1ms          | 1.12    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'PP')                                           |
|          | 1.35±0.05ms          | 1.53±0.06ms         | 1.13    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'FF')                                            |
|          | 2.71±0.06ms          | 2.80±0.1ms          | 1.03    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'NetCDF')                                        |
|          | 1.38±0.07ms          | 1.54±0.07ms         | 1.12    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'PP')                                            |
|          | 333±2ms              | 333±2ms             | 1.00    | load.ManyVars.time_many_var_load                                                                     |
|          | 7.60±0.07ms          | 7.93±0.09ms         | 1.04    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'FF')                                     |
|          | 8.41±0.09ms          | 8.71±0.07ms         | 1.04    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'PP')                                     |
|          | 1.25±0.01s           | 1.32±0.01s          | 1.05    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'FF')                                       |
|          | 1.42±0.02s           | 1.49±0.01s          | 1.05    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'PP')                                       |
|          | 3.66±0.02ms          | 3.80±0.05ms         | 1.04    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'FF')                                          |
|          | 3.93±0.03ms          | 4.08±0.02ms         | 1.04    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'PP')                                          |
|          | 7.51±0.07ms          | 7.75±0.05ms         | 1.03    | load.StructuredFF.time_structured_load((1280, 960, 5), False)                                        |
|          | 4.20±0.02ms          | 4.53±0.06ms         | 1.08    | load.StructuredFF.time_structured_load((1280, 960, 5), True)                                         |
|          | 1.24±0.01s           | 1.30±0.01s          | 1.05    | load.StructuredFF.time_structured_load((2, 2, 1000), False)                                          |
|          | 3.64±0.06ms          | 3.78±0.01ms         | 1.04    | load.StructuredFF.time_structured_load((2, 2, 2), False)                                             |
|          | 3.30±0.04ms          | 3.43±0.04ms         | 1.04    | load.StructuredFF.time_structured_load((2, 2, 2), True)                                              |
|          | 129±2ms              | 136±0.9ms           | 1.05    | load.TimeConstraint.time_time_constraint(20, 'FF')                                                   |
|          | 21.7±0.09ms          | 21.7±0.08ms         | 1.00    | load.TimeConstraint.time_time_constraint(20, 'NetCDF')                                               |
|          | 145±2ms              | 156±2ms             | 1.07    | load.TimeConstraint.time_time_constraint(20, 'PP')                                                   |
|          | 26.5±0.2ms           | 27.6±0.3ms          | 1.04    | load.TimeConstraint.time_time_constraint(3, 'FF')                                                    |
|          | 21.5±0.09ms          | 21.4±0.1ms          | 1.00    | load.TimeConstraint.time_time_constraint(3, 'NetCDF')                                                |
|          | 28.4±0.3ms           | 29.5±0.1ms          | 1.04    | load.TimeConstraint.time_time_constraint(3, 'PP')                                                    |
|          | 16.2±0.2ms           | 17.1±0.4ms          | 1.05    | load.ugrid.BasicLoading.time_load_file(1)                                                            |
|          | 35.6±0.6ms           | 37.8±0.4ms          | 1.06    | load.ugrid.BasicLoading.time_load_file(200000)                                                       |
|          | 13.2±0.2ms           | 13.6±0.3ms          | 1.03    | load.ugrid.BasicLoading.time_load_mesh(1)                                                            |
|          | 20.0±0.5ms           | 20.9±0.3ms          | 1.04    | load.ugrid.BasicLoading.time_load_mesh(200000)                                                       |
|          | 16.3±0.2ms           | 16.8±0.3ms          | 1.03    | load.ugrid.BasicLoadingTime.time_load_file(1)                                                        |
|          | 18.5±0.3ms           | 19.5±0.3ms          | 1.05    | load.ugrid.BasicLoadingTime.time_load_file(200000)                                                   |
|          | 13.1±0.1ms           | 13.7±0.2ms          | 1.05    | load.ugrid.BasicLoadingTime.time_load_mesh(1)                                                        |
|          | 15.7±0.2ms           | 16.4±0.5ms          | 1.04    | load.ugrid.BasicLoadingTime.time_load_mesh(200000)                                                   |
|          | 17.3±0.3ms           | 17.8±0.4ms          | 1.02    | load.ugrid.Callback.time_load_file_callback(1)                                                       |
|          | 42.8±0.5ms           | 46.5±0.6ms          | 1.08    | load.ugrid.Callback.time_load_file_callback(200000)                                                  |
|          | 17.3±0.4ms           | 18.3±0.3ms          | 1.06    | load.ugrid.CallbackTime.time_load_file_callback(1)                                                   |
|          | 20.0±0.4ms           | 20.8±0.4ms          | 1.04    | load.ugrid.CallbackTime.time_load_file_callback(200000)                                              |
|          | 2.52±0.1ms           | 2.69±0.2ms          | 1.07    | load.ugrid.DataRealisation.time_realise_data(10000)                                                  |
|          | 5.16±0.9ms           | 5.34±0.1ms          | 1.04    | load.ugrid.DataRealisation.time_realise_data(200000)                                                 |
|          | 36.9±0.5ms           | 36.9±0.5ms          | 1.00    | load.ugrid.DataRealisationTime.time_realise_data(10000)                                              |
|          | 807±7ms              | 796±5ms             | 0.99    | load.ugrid.DataRealisationTime.time_realise_data(200000)                                             |
|          | 100±0.1ns            | 102±0.8ns           | 1.02    | metadata_manager_factory.MetadataManagerFactory.time_AncillaryVariableMetadata_fields                |
|          | 915±10ns             | 895±3ns             | 0.98    | metadata_manager_factory.MetadataManagerFactory.time_AncillaryVariableMetadata_values                |
|          | 101±0.3ns            | 103±0.6ns           | 1.02    | metadata_manager_factory.MetadataManagerFactory.time_BaseMetadata_fields                             |
|          | 912±10ns             | 904±20ns            | 0.99    | metadata_manager_factory.MetadataManagerFactory.time_BaseMetadata_values                             |
|          | 101±1ns              | 102±0.2ns           | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_CellMeasuresMetadata_fields                     |
|          | 998±9ns              | 1.01±0.01μs         | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_CellMeasuresMetadata_values                     |
|          | 101±0.3ns            | 102±0.7ns           | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_CoordMetadata_fields                            |
|          | 1.08±0.01μs          | 1.07±0μs            | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_CoordMetadata_values                            |
|          | 101±0.3ns            | 102±0.6ns           | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_CubeMetadata_fields                             |
|          | 997±10ns             | 989±6ns             | 0.99    | metadata_manager_factory.MetadataManagerFactory.time_CubeMetadata_values                             |
|          | 101±0.5ns            | 101±0.5ns           | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_DimCoordMetadata_fields                         |
|          | 1.13±0.01μs          | 1.14±0.01μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_DimCoordMetadata_values                         |
|          | 999±10ns             | 990±7ns             | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(1)            |
|          | 6.88±0.2μs           | 6.81±0.06μs         | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(10)           |
|          | 63.6±1μs             | 64.6±0.7μs          | 1.02    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(100)          |
|          | 1.00±0.01μs          | 988±4ns             | 0.98    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(1)                         |
|          | 6.75±0.07μs          | 6.75±0.06μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(10)                        |
|          | 63.2±0.4μs           | 64.2±0.5μs          | 1.02    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(100)                       |
|          | 1.06±0μs             | 1.04±0.01μs         | 0.98    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(1)                  |
|          | 7.19±0.02μs          | 7.33±0.1μs          | 1.02    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(10)                 |
|          | 68.5±0.6μs           | 69.0±0.6μs          | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(100)                |
|          | 1.10±0.01μs          | 1.08±0.01μs         | 0.97    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(1)                        |
|          | 7.62±0.08μs          | 7.62±0.07μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(10)                       |
|          | 72.4±0.9μs           | 71.7±0.5μs          | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(100)                      |
|          | 1.05±0.01μs          | 1.03±0.01μs         | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(1)                         |
|          | 7.21±0.05μs          | 7.31±0.1μs          | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(10)                        |
|          | 67.9±0.2μs           | 68.6±1μs            | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(100)                       |
|          | 1.14±0.01μs          | 1.11±0.01μs         | 0.97    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(1)                     |
|          | 8.01±0.09μs          | 7.97±0.08μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(10)                    |
|          | 75.8±0.4μs           | 76.3±1μs            | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(100)                   |
|          | 107±1ns              | 107±0.7ns           | 1.00    | mixin.CFVariableMixin.time_get_attributes                                                            |
|          | 106±0.7ns            | 107±0.8ns           | 1.00    | mixin.CFVariableMixin.time_get_long_name                                                             |
|          | 968±7ns              | 963±10ns            | 1.00    | mixin.CFVariableMixin.time_get_metadata                                                              |
|          | 107±0.3ns            | 107±0.7ns           | 1.00    | mixin.CFVariableMixin.time_get_standard_name                                                         |
|          | 107±0.9ns            | 107±0.9ns           | 1.00    | mixin.CFVariableMixin.time_get_units                                                                 |
|          | 107±0.7ns            | 107±0.6ns           | 1.00    | mixin.CFVariableMixin.time_get_var_name                                                              |
|          | 690±10ns             | 695±10ns            | 1.01    | mixin.CFVariableMixin.time_set_attributes                                                            |
|          | 114±0.8ns            | 114±0.6ns           | 0.99    | mixin.CFVariableMixin.time_set_long_name                                                             |
|          | 3.48±0.03μs          | 3.54±0.04μs         | 1.02    | mixin.CFVariableMixin.time_set_metadata__dict                                                        |
|          | 4.38±0.07μs          | 4.43±0.07μs         | 1.01    | mixin.CFVariableMixin.time_set_metadata__metadata                                                    |
|          | 4.29±0.02μs          | 4.32±0.01μs         | 1.01    | mixin.CFVariableMixin.time_set_metadata__tuple                                                       |
|          | 556±8ns              | 543±8ns             | 0.98    | mixin.CFVariableMixin.time_set_standard_name                                                         |
|          | 409±3ns              | 424±4ns             | 1.04    | mixin.CFVariableMixin.time_set_units                                                                 |
|          | 445±5ns              | 432±4ns             | 0.97    | mixin.CFVariableMixin.time_set_var_name                                                              |
|          | 366±2ms              | 365±1ms             | 1.00    | plot.AuxSort.time_aux_sort                                                                           |
|          | 77.2±3ms             | 76.9±3ms            | 1.00    | regridding.CurvilinearRegridding.time_regrid_pic                                                     |
|          | 96.1±0.7ms           | 96.7±0.6ms          | 1.01    | regridding.HorizontalChunkedRegridding.time_regrid_area_w                                            |
|          | 48.0±1ms             | 48.4±2ms            | 1.01    | regridding.HorizontalChunkedRegridding.time_regrid_area_w_new_grid                                   |
|          | 3.71±0.05ms          | 4.11±0.07ms         | 1.11    | save.NetcdfSave.time_netcdf_save_cube(50, False)                                                     |
|          | 86.4±0.9ms           | 93.1±0.5ms          | 1.08    | save.NetcdfSave.time_netcdf_save_cube(50, True)                                                      |
|          | 53.5±0.6ms           | 54.7±0.9ms          | 1.02    | save.NetcdfSave.time_netcdf_save_cube(600, False)                                                    |
|          | 579±4ms              | 587±2ms             | 1.01    | save.NetcdfSave.time_netcdf_save_cube(600, True)                                                     |
|          | 101±0.7ns            | 102±2ns             | 1.01    | save.NetcdfSave.time_netcdf_save_mesh(50, False)                                                     |
|          | 72.0±0.6ms           | 77.6±0.8ms          | 1.08    | save.NetcdfSave.time_netcdf_save_mesh(50, True)                                                      |
|          | 101±0.4ns            | 102±2ns             | 1.01    | save.NetcdfSave.time_netcdf_save_mesh(600, False)                                                    |
|          | 511±4ms              | 520±3ms             | 1.02    | save.NetcdfSave.time_netcdf_save_mesh(600, True)                                                     |
|          | 35.4±0.5ms           | 41.4±1ms            | 1.17    | stats.PearsonR.time_lazy                                                                             |
|          | 18.8±0.2ms           | 18.6±0.3ms          | 0.99    | stats.PearsonR.time_real                                                                             |
|          | 23.4±0.3ms           | 22.6±0.9ms          | 0.97    | trajectory.TrajectoryInterpolation.time_trajectory_linear                                            |
|          | 59.3±0.5ms           | 59.7±0.7ms          | 1.01    | trajectory.TrajectoryInterpolation.time_trajectory_nearest                                           |

Benchmarks that have got worse:

| Change   | Before [c6151e81]    | After [f4e46f19]    |   Ratio | Benchmark (Parameter)                                      |
|----------|----------------------|---------------------|---------|------------------------------------------------------------|
| +        | 1.51±0.02ms          | 1.85±0.02ms         |    1.22 | experimental.ugrid.Connectivity.time_create(6)             |
| +        | 2.62±0.03ms          | 3.20±0.06ms         |    1.22 | experimental.ugrid.ConnectivityLazy.time_create(6)         |
| +        | 258±4μs              | 354±8μs             |    1.37 | experimental.ugrid.Mesh.time_add_connectivities(6)         |
| +        | 298±2μs              | 405±5μs             |    1.36 | experimental.ugrid.Mesh.time_create(6)                     |
| +        | 294±10μs             | 400±10μs            |    1.36 | experimental.ugrid.MeshLazy.time_add_connectivities(6)     |
| +        | 340±8μs              | 447±10μs            |    1.31 | experimental.ugrid.MeshLazy.time_create(6)                 |
| +        | 285±2ms              | 351±5ms             |    1.23 | load.StructuredFF.time_structured_load((2, 2, 1000), True) |
```

</details>

Generated by GHA run [`8210493042`](https://github.com/SciTools/iris/actions/runs/8210493042)


# :stopwatch: Performance Benchmark Report: bf992234

<details>
<summary>Performance shifts</summary>

```
| Change   | Before [c6151e81]    | After [bf992234]    |   Ratio | Benchmark (Parameter)                                      |
|----------|----------------------|---------------------|---------|------------------------------------------------------------|
| +        | 1.51±0.03ms          | 1.88±0.03ms         |    1.24 | experimental.ugrid.Connectivity.time_create(6)             |
| +        | 252±4μs              | 359±5μs             |    1.42 | experimental.ugrid.Mesh.time_add_connectivities(6)         |
| +        | 306±6μs              | 412±5μs             |    1.35 | experimental.ugrid.Mesh.time_create(6)                     |
| +        | 295±7μs              | 406±20μs            |    1.38 | experimental.ugrid.MeshLazy.time_add_connectivities(6)     |
| +        | 340±10μs             | 464±10μs            |    1.36 | experimental.ugrid.MeshLazy.time_create(6)                 |
| +        | 287±5ms              | 351±5ms             |    1.22 | load.StructuredFF.time_structured_load((2, 2, 1000), True) |
```

</details>

<details>
<summary>Full benchmark results</summary>

```

Benchmarks that have stayed the same:

| Change   | Before [c6151e81]    | After [bf992234]    | Ratio   | Benchmark (Parameter)                                                                                |
|----------|----------------------|---------------------|---------|------------------------------------------------------------------------------------------------------|
|          | n/a                  | n/a                 | n/a     | aux_factory.FactoryCommon.time_create                                                                |
|          | 4.39±0.03μs          | 4.34±0.07μs         | 0.99    | aux_factory.HybridHeightFactory.time_create                                                          |
|          | 4.93±0.05μs          | 4.84±0.08μs         | 0.98    | coords.AncillaryVariable.time_create                                                                 |
|          | 430±3ns              | 415±6ns             | 0.97    | coords.AuxCoord.time_bounds                                                                          |
|          | 8.78±0.07μs          | 8.80±0.08μs         | 1.00    | coords.AuxCoord.time_create                                                                          |
|          | 419±3ns              | 400±5ns             | 0.96    | coords.AuxCoord.time_points                                                                          |
|          | 228±20μs             | 248±20μs            | 1.09    | coords.AuxCoordLazy.time_bounds                                                                      |
|          | 13.1±0.6μs           | 13.1±0.5μs          | 1.00    | coords.AuxCoordLazy.time_create                                                                      |
|          | 228±20μs             | 243±20μs            | 1.07    | coords.AuxCoordLazy.time_points                                                                      |
|          | 5.37±0.07μs          | 5.28±0.04μs         | 0.98    | coords.CellMeasure.time_create                                                                       |
|          | 1.10±0.01μs          | 1.10±0.01μs         | 1.00    | coords.CellMethod.time_create                                                                        |
|          | n/a                  | n/a                 | n/a     | coords.CoordCommon.time_create                                                                       |
|          | 110±1μs              | 109±1μs             | 1.00    | coords.DimCoord.time_create                                                                          |
|          | 31.3±0.7μs           | 32.1±0.5μs          | 1.03    | coords.DimCoord.time_regular                                                                         |
|          | 381±5ms              | 382±3ms             | 1.00    | cube.Aggregation.time_aggregated_by                                                                  |
|          | 60.2±0.4μs           | 58.5±0.5μs          | 0.97    | cube.AncillaryVariable.time_add                                                                      |
|          | 11.3±0.1μs           | 11.2±0.1μs          | 0.99    | cube.AncillaryVariable.time_create                                                                   |
|          | 66.5±0.5μs           | 66.7±0.4μs          | 1.00    | cube.AuxCoord.time_add                                                                               |
|          | 9.57±0.09μs          | 9.43±0.1μs          | 0.99    | cube.AuxCoord.time_create                                                                            |
|          | 5.93±0.03μs          | 6.03±0.06μs         | 1.02    | cube.AuxCoord.time_return_coord_dims                                                                 |
|          | 4.44±0.05μs          | 4.48±0.05μs         | 1.01    | cube.AuxCoord.time_return_coords                                                                     |
|          | 40.9±0.3μs           | 39.8±0.3μs          | 0.97    | cube.AuxFactory.time_add                                                                             |
|          | 12.4±0.3μs           | 12.3±0.2μs          | 0.99    | cube.AuxFactory.time_create                                                                          |
|          | 58.9±0.3μs           | 60.3±1μs            | 1.02    | cube.CellMeasure.time_add                                                                            |
|          | 11.4±0.2μs           | 11.6±0.2μs          | 1.02    | cube.CellMeasure.time_create                                                                         |
|          | 52.8±0.6μs           | 52.0±1μs            | 0.98    | cube.CellMethod.time_add                                                                             |
|          | 7.27±0.05μs          | 7.23±0.1μs          | 0.99    | cube.CellMethod.time_create                                                                          |
|          | n/a                  | n/a                 | n/a     | cube.ComponentCommon.time_add                                                                        |
|          | n/a                  | n/a                 | n/a     | cube.ComponentCommon.time_create                                                                     |
|          | 130±0.6ms            | 130±0.5ms           | 1.00    | cube.Concatenate.time_concatenate                                                                    |
|          | 6.82±0.06μs          | 6.73±0.08μs         | 0.99    | cube.Cube.time_basic                                                                                 |
|          | 58.0±0.3ns           | 58.5±0.3ns          | 1.01    | cube.Cube.time_rename                                                                                |
|          | 61.6±0.4μs           | 61.1±1μs            | 0.99    | cube.Equality.time_equality                                                                          |
|          | 333±2ms              | 333±3ms             | 1.00    | cube.Merge.time_merge                                                                                |
|          | 28.5±2μs             | 28.8±2μs            | 1.01    | cube.MeshCoord.time_add(10000)                                                                       |
|          | 30.7±2μs             | 29.9±2μs            | 0.97    | cube.MeshCoord.time_add(1000000)                                                                     |
|          | 25.2±0.9μs           | 25.5±2μs            | 1.01    | cube.MeshCoord.time_add(6)                                                                           |
|          | 19.5±0.1μs           | 19.3±0.2μs          | 0.99    | cube.MeshCoord.time_create(10000)                                                                    |
|          | 19.6±0.2μs           | 19.4±0.3μs          | 0.99    | cube.MeshCoord.time_create(1000000)                                                                  |
|          | 19.0±0.3μs           | 18.9±0.2μs          | 0.99    | cube.MeshCoord.time_create(6)                                                                        |
|          | 52.7±6μs             | 57.8±6μs            | 1.10    | cube.MeshCoord.time_remove(10000)                                                                    |
|          | 58.9±4μs             | 61.4±3μs            | 1.04    | cube.MeshCoord.time_remove(1000000)                                                                  |
|          | 51.0±8μs             | 48.8±6μs            | 0.96    | cube.MeshCoord.time_remove(6)                                                                        |
|          | 2.05±0.3ms           | 2.78±0.2ms          | ~1.36   | experimental.ugrid.Connectivity.time_create(1000000)                                                 |
|          | 611±7ns              | 606±10ns            | 0.99    | experimental.ugrid.Connectivity.time_indices(1000000)                                                |
|          | 606±5ns              | 609±10ns            | 1.01    | experimental.ugrid.Connectivity.time_indices(6)                                                      |
|          | 20.1±2ms             | 23.4±2ms            | 1.16    | experimental.ugrid.Connectivity.time_location_lengths(1000000)                                       |
|          | 2.28±0.01ms          | 2.62±0.04ms         | 1.15    | experimental.ugrid.Connectivity.time_location_lengths(6)                                             |
|          | 23.1±3ms             | 28.1±3ms            | ~1.22   | experimental.ugrid.Connectivity.time_validate_indices(1000000)                                       |
|          | 3.37±0.04ms          | 3.95±0.06ms         | 1.17    | experimental.ugrid.Connectivity.time_validate_indices(6)                                             |
|          | 3.63±0.2ms           | 4.29±0.2ms          | 1.18    | experimental.ugrid.ConnectivityLazy.time_create(1000000)                                             |
|          | 2.67±0.03ms          | 3.17±0.04ms         | 1.18    | experimental.ugrid.ConnectivityLazy.time_create(6)                                                   |
|          | 241±10μs             | 254±10μs            | 1.05    | experimental.ugrid.ConnectivityLazy.time_indices(1000000)                                            |
|          | 236±8μs              | 251±10μs            | 1.06    | experimental.ugrid.ConnectivityLazy.time_indices(6)                                                  |
|          | 20.0±0.3ms           | 20.1±0.4ms          | 1.01    | experimental.ugrid.ConnectivityLazy.time_location_lengths(1000000)                                   |
|          | 2.54±0.06ms          | 2.90±0.04ms         | 1.14    | experimental.ugrid.ConnectivityLazy.time_location_lengths(6)                                         |
|          | 22.5±0.5ms           | 23.0±0.4ms          | 1.02    | experimental.ugrid.ConnectivityLazy.time_validate_indices(1000000)                                   |
|          | 3.68±0.07ms          | 4.22±0.06ms         | 1.15    | experimental.ugrid.ConnectivityLazy.time_validate_indices(6)                                         |
|          | 12.7±0.1μs           | 12.7±0.1μs          | 1.00    | experimental.ugrid.Mesh.time_add_connectivities(1000000)                                             |
|          | 4.90±0.08μs          | 4.83±0.03μs         | 0.98    | experimental.ugrid.Mesh.time_add_coords(1000000)                                                     |
|          | 4.85±0.02μs          | 4.79±0.04μs         | 0.99    | experimental.ugrid.Mesh.time_add_coords(6)                                                           |
|          | 5.13±0.06μs          | 5.01±0.06μs         | 0.98    | experimental.ugrid.Mesh.time_connectivities(1000000)                                                 |
|          | 5.10±0.05μs          | 5.04±0.06μs         | 0.99    | experimental.ugrid.Mesh.time_connectivities(6)                                                       |
|          | 5.92±0.05μs          | 5.84±0.05μs         | 0.99    | experimental.ugrid.Mesh.time_coords(1000000)                                                         |
|          | 5.85±0.09μs          | 5.80±0.1μs          | 0.99    | experimental.ugrid.Mesh.time_coords(6)                                                               |
|          | 46.3±0.7μs           | 45.1±0.6μs          | 0.98    | experimental.ugrid.Mesh.time_create(1000000)                                                         |
|          | 78.9±5ms             | 75.1±3ms            | 0.95    | experimental.ugrid.Mesh.time_eq(1000000)                                                             |
|          | 273±3μs              | 276±4μs             | 1.01    | experimental.ugrid.Mesh.time_eq(6)                                                                   |
|          | 4.96±0.06μs          | 4.96±0.07μs         | 1.00    | experimental.ugrid.Mesh.time_remove_connectivities(1000000)                                          |
|          | 4.92±0.05μs          | 4.91±0.07μs         | 1.00    | experimental.ugrid.Mesh.time_remove_connectivities(6)                                                |
|          | 7.33±0.1μs           | 7.26±0.05μs         | 0.99    | experimental.ugrid.Mesh.time_remove_coords(1000000)                                                  |
|          | 7.34±0.07μs          | 7.31±0.1μs          | 1.00    | experimental.ugrid.Mesh.time_remove_coords(6)                                                        |
|          | 10.2±0.1μs           | 10.8±0.1μs          | 1.05    | experimental.ugrid.MeshCoord.time_bounds(10000)                                                      |
|          | 119±3ms              | 120±4ms             | 1.01    | experimental.ugrid.MeshCoord.time_bounds(1000000)                                                    |
|          | 5.36±0.05μs          | 5.43±0.06μs         | 1.01    | experimental.ugrid.MeshCoord.time_bounds(6)                                                          |
|          | 3.23±0.04ms          | 3.62±0.05ms         | 1.12    | experimental.ugrid.MeshCoord.time_create(10000)                                                      |
|          | 3.19±0.01ms          | 3.71±0.03ms         | 1.16    | experimental.ugrid.MeshCoord.time_create(1000000)                                                    |
|          | 199±2μs              | 202±4μs             | 1.01    | experimental.ugrid.MeshCoord.time_create(6)                                                          |
|          | 3.65±0.05μs          | 3.64±0.07μs         | 1.00    | experimental.ugrid.MeshCoord.time_points(10000)                                                      |
|          | 4.21±0.07μs          | 4.22±0.06μs         | 1.00    | experimental.ugrid.MeshCoord.time_points(1000000)                                                    |
|          | 2.98±0.04μs          | 2.97±0.02μs         | 1.00    | experimental.ugrid.MeshCoord.time_points(6)                                                          |
|          | 6.91±0.2ms           | 7.48±0.2ms          | 1.08    | experimental.ugrid.MeshCoordLazy.time_bounds(10000)                                                  |
|          | 119±3ms              | 120±3ms             | 1.01    | experimental.ugrid.MeshCoordLazy.time_bounds(1000000)                                                |
|          | 12.3±0.9μs           | 12.2±0.7μs          | 0.99    | experimental.ugrid.MeshCoordLazy.time_bounds(6)                                                      |
|          | 3.31±0.07ms          | 3.74±0.06ms         | 1.13    | experimental.ugrid.MeshCoordLazy.time_create(10000)                                                  |
|          | 3.27±0.05ms          | 3.74±0.07ms         | 1.14    | experimental.ugrid.MeshCoordLazy.time_create(1000000)                                                |
|          | 239±7μs              | 238±7μs             | 1.00    | experimental.ugrid.MeshCoordLazy.time_create(6)                                                      |
|          | 2.44±0.1ms           | 2.50±0.09ms         | 1.02    | experimental.ugrid.MeshCoordLazy.time_points(10000)                                                  |
|          | 4.48±0.2ms           | 4.52±0.2ms          | 1.01    | experimental.ugrid.MeshCoordLazy.time_points(1000000)                                                |
|          | 8.57±0.7μs           | 8.36±0.7μs          | 0.98    | experimental.ugrid.MeshCoordLazy.time_points(6)                                                      |
|          | 32.7±1μs             | 32.9±1μs            | 1.01    | experimental.ugrid.MeshLazy.time_add_connectivities(1000000)                                         |
|          | 19.1±1μs             | 18.5±0.8μs          | 0.97    | experimental.ugrid.MeshLazy.time_add_coords(1000000)                                                 |
|          | 16.2±2μs             | 16.9±2μs            | 1.04    | experimental.ugrid.MeshLazy.time_add_coords(6)                                                       |
|          | 16.7±0.3μs           | 16.5±0.5μs          | 0.99    | experimental.ugrid.MeshLazy.time_connectivities(1000000)                                             |
|          | 16.2±1μs             | 16.2±2μs            | 1.00    | experimental.ugrid.MeshLazy.time_connectivities(6)                                                   |
|          | 19.1±0.6μs           | 19.4±1μs            | 1.01    | experimental.ugrid.MeshLazy.time_coords(1000000)                                                     |
|          | 18.7±1μs             | 18.8±0.5μs          | 1.00    | experimental.ugrid.MeshLazy.time_coords(6)                                                           |
|          | 79.0±2μs             | 77.0±3μs            | 0.97    | experimental.ugrid.MeshLazy.time_create(1000000)                                                     |
|          | 73.0±3ms             | 75.4±4ms            | 1.03    | experimental.ugrid.MeshLazy.time_eq(1000000)                                                         |
|          | 350±20μs             | 357±20μs            | 1.02    | experimental.ugrid.MeshLazy.time_eq(6)                                                               |
|          | 19.1±1μs             | 18.1±0.9μs          | 0.95    | experimental.ugrid.MeshLazy.time_remove_connectivities(1000000)                                      |
|          | 17.3±1μs             | 16.7±0.6μs          | 0.97    | experimental.ugrid.MeshLazy.time_remove_connectivities(6)                                            |
|          | 31.5±0.8μs           | 31.0±2μs            | 0.99    | experimental.ugrid.MeshLazy.time_remove_coords(1000000)                                              |
|          | 30.9±2μs             | 30.1±1μs            | 0.97    | experimental.ugrid.MeshLazy.time_remove_coords(6)                                                    |
|          | n/a                  | n/a                 | n/a     | experimental.ugrid.UGridCommon.time_create(1000000)                                                  |
|          | n/a                  | n/a                 | n/a     | experimental.ugrid.UGridCommon.time_create(6)                                                        |
|          | 503±5ns              | 506±20ns            | 1.01    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(50)               |
|          | 249±1ms              | 247±2ms             | 1.00    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(500)              |
|          | 11.7±0.2ms           | 13.8±0.3ms          | 1.18    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(50)            |
|          | 13.7±0.8ms           | 15.6±0.2ms          | 1.14    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(500)           |
|          | 5.0                  | 5.0                 | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(50)  |
|          | 5.0                  | 5.0                 | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(500) |
|          | 126±2ms              | 133±3ms             | 1.06    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(50)          |
|          | 728±5ms              | 735±7ms             | 1.01    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(500)         |
|          | 88.4±2ms             | 95.0±2ms            | 1.07    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(50)                              |
|          | 683±5ms              | 689±6ms             | 1.01    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(500)                             |
|          | 2.1752849999999997   | 2.1752849999999997  | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(50)                   |
|          | 216.01528499999998   | 216.01528499999998  | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(500)                  |
|          | 566±5μs              | 577±7μs             | 1.02    | import_iris.Iris.time__concatenate                                                                   |
|          | 165±2μs              | 163±3μs             | 0.99    | import_iris.Iris.time__constraints                                                                   |
|          | 99.6±2μs             | 101±2μs             | 1.02    | import_iris.Iris.time__data_manager                                                                  |
|          | 84.6±0.4μs           | 85.6±0.9μs          | 1.01    | import_iris.Iris.time__deprecation                                                                   |
|          | 107±1μs              | 109±0.8μs           | 1.01    | import_iris.Iris.time__lazy_data                                                                     |
|          | 790±10μs             | 811±30μs            | 1.03    | import_iris.Iris.time__merge                                                                         |
|          | 71.9±0.4μs           | 72.7±0.8μs          | 1.01    | import_iris.Iris.time__representation                                                                |
|          | 436±10μs             | 436±7μs             | 1.00    | import_iris.Iris.time_analysis                                                                       |
|          | 129±2μs              | 128±2μs             | 0.99    | import_iris.Iris.time_analysis__area_weighted                                                        |
|          | 99.3±1μs             | 98.2±1μs            | 0.99    | import_iris.Iris.time_analysis__grid_angles                                                          |
|          | 219±5μs              | 218±2μs             | 1.00    | import_iris.Iris.time_analysis__interpolation                                                        |
|          | 172±4μs              | 171±3μs             | 0.99    | import_iris.Iris.time_analysis__regrid                                                               |
|          | 102±3μs              | 102±1μs             | 1.00    | import_iris.Iris.time_analysis__scipy_interpolate                                                    |
|          | 125±1μs              | 127±3μs             | 1.02    | import_iris.Iris.time_analysis_calculus                                                              |
|          | 285±2μs              | 284±3μs             | 1.00    | import_iris.Iris.time_analysis_cartography                                                           |
|          | 83.5±0.7μs           | 84.1±0.6μs          | 1.01    | import_iris.Iris.time_analysis_geomerty                                                              |
|          | 200±4μs              | 198±4μs             | 0.99    | import_iris.Iris.time_analysis_maths                                                                 |
|          | 90.0±1μs             | 91.7±1μs            | 1.02    | import_iris.Iris.time_analysis_stats                                                                 |
|          | 167±3μs              | 166±3μs             | 0.99    | import_iris.Iris.time_analysis_trajectory                                                            |
|          | 276±10μs             | 271±8μs             | 0.98    | import_iris.Iris.time_aux_factory                                                                    |
|          | 80.6±1μs             | 80.4±0.3μs          | 1.00    | import_iris.Iris.time_common                                                                         |
|          | 155±5μs              | 152±3μs             | 0.98    | import_iris.Iris.time_common_lenient                                                                 |
|          | 900±30μs             | 882±10μs            | 0.98    | import_iris.Iris.time_common_metadata                                                                |
|          | 125±4μs              | 125±1μs             | 1.00    | import_iris.Iris.time_common_mixin                                                                   |
|          | 1.05±0.01ms          | 1.02±0.01ms         | 0.98    | import_iris.Iris.time_common_resolve                                                                 |
|          | 185±3μs              | 187±3μs             | 1.01    | import_iris.Iris.time_config                                                                         |
|          | 107±2μs              | 106±2μs             | 1.00    | import_iris.Iris.time_coord_categorisation                                                           |
|          | 324±10μs             | 321±7μs             | 0.99    | import_iris.Iris.time_coord_systems                                                                  |
|          | 641±20μs             | 636±10μs            | 0.99    | import_iris.Iris.time_coords                                                                         |
|          | 612±20μs             | 592±10μs            | 0.97    | import_iris.Iris.time_cube                                                                           |
|          | 207±4μs              | 206±2μs             | 0.99    | import_iris.Iris.time_exceptions                                                                     |
|          | 72.9±0.6μs           | 72.8±0.8μs          | 1.00    | import_iris.Iris.time_experimental                                                                   |
|          | 194±2μs              | 194±3μs             | 1.00    | import_iris.Iris.time_fileformats                                                                    |
|          | 231±5μs              | 225±2μs             | 0.97    | import_iris.Iris.time_fileformats__ff                                                                |
|          | 2.46±0.06ms          | 2.40±0.03ms         | 0.98    | import_iris.Iris.time_fileformats__ff_cross_references                                               |
|          | 73.2±0.5μs           | 74.3±1μs            | 1.01    | import_iris.Iris.time_fileformats__pp_lbproc_pairs                                                   |
|          | 105±3μs              | 108±1μs             | 1.03    | import_iris.Iris.time_fileformats_abf                                                                |
|          | 323±8μs              | 330±7μs             | 1.02    | import_iris.Iris.time_fileformats_cf                                                                 |
|          | 5.49±0.2ms           | 5.41±0.1ms          | 0.98    | import_iris.Iris.time_fileformats_dot                                                                |
|          | 69.7±1μs             | 69.6±0.3μs          | 1.00    | import_iris.Iris.time_fileformats_name                                                               |
|          | 236±2μs              | 238±5μs             | 1.01    | import_iris.Iris.time_fileformats_name_loaders                                                       |
|          | 114±0.7μs            | 113±0.9μs           | 1.00    | import_iris.Iris.time_fileformats_netcdf                                                             |
|          | 112±2μs              | 113±1μs             | 1.01    | import_iris.Iris.time_fileformats_nimrod                                                             |
|          | 188±2μs              | 190±2μs             | 1.01    | import_iris.Iris.time_fileformats_nimrod_load_rules                                                  |
|          | 678±10μs             | 676±10μs            | 1.00    | import_iris.Iris.time_fileformats_pp                                                                 |
|          | 161±0.8μs            | 160±2μs             | 0.99    | import_iris.Iris.time_fileformats_pp_load_rules                                                      |
|          | 123±0.8μs            | 122±1μs             | 1.00    | import_iris.Iris.time_fileformats_pp_save_rules                                                      |
|          | 439±3μs              | 440±5μs             | 1.00    | import_iris.Iris.time_fileformats_rules                                                              |
|          | 197±2μs              | 193±3μs             | 0.98    | import_iris.Iris.time_fileformats_structured_array_identification                                    |
|          | 79.7±1μs             | 79.4±0.8μs          | 1.00    | import_iris.Iris.time_fileformats_um                                                                 |
|          | 150±1μs              | 150±2μs             | 1.00    | import_iris.Iris.time_fileformats_um__fast_load                                                      |
|          | 131±2μs              | 133±1μs             | 1.01    | import_iris.Iris.time_fileformats_um__fast_load_structured_fields                                    |
|          | 70.8±0.4μs           | 71.9±0.5μs          | 1.02    | import_iris.Iris.time_fileformats_um__ff_replacement                                                 |
|          | 78.0±0.8μs           | 78.3±1μs            | 1.00    | import_iris.Iris.time_fileformats_um__optimal_array_structuring                                      |
|          | 872±4μs              | 871±7μs             | 1.00    | import_iris.Iris.time_fileformats_um_cf_map                                                          |
|          | 127±2μs              | 129±1μs             | 1.01    | import_iris.Iris.time_io                                                                             |
|          | 160±2μs              | 160±4μs             | 1.00    | import_iris.Iris.time_io_format_picker                                                               |
|          | 197±3μs              | 194±2μs             | 0.99    | import_iris.Iris.time_iris                                                                           |
|          | 120±2μs              | 119±1μs             | 0.99    | import_iris.Iris.time_iterate                                                                        |
|          | 8.24±0.1ms           | 8.22±0.2ms          | 1.00    | import_iris.Iris.time_palette                                                                        |
|          | 297±3μs              | 302±1μs             | 1.01    | import_iris.Iris.time_plot                                                                           |
|          | 93.8±1μs             | 94.1±2μs            | 1.00    | import_iris.Iris.time_quickplot                                                                      |
|          | 1.96±0.02ms          | 1.92±0.01ms         | 0.98    | import_iris.Iris.time_std_names                                                                      |
|          | 1.72±0.01ms          | 1.72±0.02ms         | 1.00    | import_iris.Iris.time_symbols                                                                        |
|          | 299±2ms              | 297±2ms             | 0.99    | import_iris.Iris.time_tests                                                                          |
|          | 218±1μs              | 218±2μs             | 1.00    | import_iris.Iris.time_third_party_cartopy                                                            |
|          | 4.81±0.07ms          | 4.92±0.1ms          | 1.02    | import_iris.Iris.time_third_party_cf_units                                                           |
|          | 104±1μs              | 103±0.6μs           | 0.99    | import_iris.Iris.time_third_party_cftime                                                             |
|          | 2.67±0.02ms          | 2.67±0.03ms         | 1.00    | import_iris.Iris.time_third_party_matplotlib                                                         |
|          | 1.01±0.01ms          | 1.00±0ms            | 1.00    | import_iris.Iris.time_third_party_numpy                                                              |
|          | 152±1μs              | 154±2μs             | 1.02    | import_iris.Iris.time_third_party_scipy                                                              |
|          | 92.8±0.8μs           | 93.2±0.9μs          | 1.00    | import_iris.Iris.time_time                                                                           |
|          | 290±6μs              | 286±5μs             | 0.99    | import_iris.Iris.time_util                                                                           |
|          | 82.8±0.7μs           | 81.7±2μs            | 0.99    | iterate.IZip.time_izip                                                                               |
|          | 7.51±0.08ms          | 7.90±0.1ms          | 1.05    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'FF')                                           |
|          | 23.6±0.7ms           | 23.8±0.6ms          | 1.01    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'NetCDF')                                       |
|          | 8.12±0.1ms           | 8.68±0.1ms          | 1.07    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'PP')                                           |
|          | 7.43±0.05ms          | 7.95±0.06ms         | 1.07    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'FF')                                            |
|          | 20.3±0.3ms           | 20.4±0.4ms          | 1.00    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'NetCDF')                                        |
|          | 8.11±0.02ms          | 8.72±0.1ms          | 1.08    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'PP')                                            |
|          | 1.26±0.01s           | 1.32±0.01s          | 1.05    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'FF')                                             |
|          | 19.2±0.5ms           | 19.6±0.3ms          | 1.02    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'NetCDF')                                         |
|          | 1.38±0.02s           | 1.46±0.02s          | 1.05    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'PP')                                             |
|          | 1.25±0.02s           | 1.32±0.02s          | 1.06    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'FF')                                              |
|          | 19.1±0.4ms           | 19.3±0.5ms          | 1.01    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'NetCDF')                                          |
|          | 1.40±0.02s           | 1.46±0.02s          | 1.04    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'PP')                                              |
|          | 3.60±0.04ms          | 3.74±0.05ms         | 1.04    | load.LoadAndRealise.time_load((50, 50, 2), False, 'FF')                                              |
|          | 18.9±0.4ms           | 19.0±0.5ms          | 1.01    | load.LoadAndRealise.time_load((50, 50, 2), False, 'NetCDF')                                          |
|          | 3.91±0.06ms          | 4.01±0.05ms         | 1.03    | load.LoadAndRealise.time_load((50, 50, 2), False, 'PP')                                              |
|          | 3.67±0.05ms          | 3.82±0.08ms         | 1.04    | load.LoadAndRealise.time_load((50, 50, 2), True, 'FF')                                               |
|          | 19.1±0.2ms           | 19.0±0.5ms          | 1.00    | load.LoadAndRealise.time_load((50, 50, 2), True, 'NetCDF')                                           |
|          | 3.83±0.03ms          | 4.02±0.07ms         | 1.05    | load.LoadAndRealise.time_load((50, 50, 2), True, 'PP')                                               |
|          | 33.1±2ms             | 32.3±2ms            | 0.98    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'FF')                                        |
|          | 18.9±0.4ms           | 19.3±0.8ms          | 1.03    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'NetCDF')                                    |
|          | 13.0±2ms             | 13.3±2ms            | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'PP')                                        |
|          | 24.8±1ms             | 26.0±2ms            | 1.05    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'FF')                                         |
|          | 72.3±1ms             | 72.7±1ms            | 1.01    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'NetCDF')                                     |
|          | 25.4±2ms             | 26.1±2ms            | 1.03    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'PP')                                         |
|          | 377±4ms              | 436±7ms             | 1.16    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'FF')                                          |
|          | 2.94±0.2ms           | 2.90±0.1ms          | 0.99    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'NetCDF')                                      |
|          | 383±8ms              | 439±4ms             | 1.14    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'PP')                                          |
|          | 383±4ms              | 440±4ms             | 1.15    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'FF')                                           |
|          | 2.81±0.2ms           | 2.98±0.2ms          | 1.06    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'NetCDF')                                       |
|          | 391±8ms              | 447±6ms             | 1.14    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'PP')                                           |
|          | 1.44±0.05ms          | 1.54±0.05ms         | 1.07    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'FF')                                           |
|          | 2.87±0.2ms           | 2.80±0.1ms          | 0.97    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'NetCDF')                                       |
|          | 1.33±0.08ms          | 1.56±0.09ms         | 1.17    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'PP')                                           |
|          | 1.43±0.09ms          | 1.53±0.09ms         | 1.07    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'FF')                                            |
|          | 2.88±0.1ms           | 3.03±0.2ms          | 1.05    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'NetCDF')                                        |
|          | 1.43±0.1ms           | 1.57±0.04ms         | 1.10    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'PP')                                            |
|          | 336±3ms              | 335±2ms             | 1.00    | load.ManyVars.time_many_var_load                                                                     |
|          | 7.61±0.07ms          | 7.98±0.08ms         | 1.05    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'FF')                                     |
|          | 8.40±0.05ms          | 8.98±0.05ms         | 1.07    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'PP')                                     |
|          | 1.25±0.01s           | 1.35±0.02s          | 1.08    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'FF')                                       |
|          | 1.41±0.01s           | 1.49±0.02s          | 1.06    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'PP')                                       |
|          | 3.65±0.02ms          | 3.78±0.03ms         | 1.03    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'FF')                                          |
|          | 3.95±0.04ms          | 4.09±0.02ms         | 1.04    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'PP')                                          |
|          | 7.65±0.1ms           | 7.86±0.08ms         | 1.03    | load.StructuredFF.time_structured_load((1280, 960, 5), False)                                        |
|          | 4.22±0.05ms          | 4.52±0.04ms         | 1.07    | load.StructuredFF.time_structured_load((1280, 960, 5), True)                                         |
|          | 1.24±0.01s           | 1.31±0.01s          | 1.06    | load.StructuredFF.time_structured_load((2, 2, 1000), False)                                          |
|          | 3.60±0.04ms          | 3.76±0.03ms         | 1.04    | load.StructuredFF.time_structured_load((2, 2, 2), False)                                             |
|          | 3.26±0.03ms          | 3.39±0.04ms         | 1.04    | load.StructuredFF.time_structured_load((2, 2, 2), True)                                              |
|          | 129±1ms              | 137±2ms             | 1.06    | load.TimeConstraint.time_time_constraint(20, 'FF')                                                   |
|          | 22.0±0.3ms           | 22.1±0.4ms          | 1.00    | load.TimeConstraint.time_time_constraint(20, 'NetCDF')                                               |
|          | 143±0.9ms            | 154±0.8ms           | 1.07    | load.TimeConstraint.time_time_constraint(20, 'PP')                                                   |
|          | 26.3±0.2ms           | 27.6±0.7ms          | 1.05    | load.TimeConstraint.time_time_constraint(3, 'FF')                                                    |
|          | 22.0±0.3ms           | 21.7±0.3ms          | 0.99    | load.TimeConstraint.time_time_constraint(3, 'NetCDF')                                                |
|          | 28.4±0.3ms           | 29.5±0.5ms          | 1.04    | load.TimeConstraint.time_time_constraint(3, 'PP')                                                    |
|          | 16.7±0.4ms           | 17.7±0.7ms          | 1.06    | load.ugrid.BasicLoading.time_load_file(1)                                                            |
|          | 36.1±1ms             | 38.8±1ms            | 1.07    | load.ugrid.BasicLoading.time_load_file(200000)                                                       |
|          | 13.4±0.2ms           | 13.6±0.5ms          | 1.01    | load.ugrid.BasicLoading.time_load_mesh(1)                                                            |
|          | 20.8±1ms             | 22.0±0.8ms          | 1.06    | load.ugrid.BasicLoading.time_load_mesh(200000)                                                       |
|          | 17.0±0.8ms           | 16.9±0.8ms          | 0.99    | load.ugrid.BasicLoadingTime.time_load_file(1)                                                        |
|          | 20.1±0.3ms           | 19.8±0.6ms          | 0.99    | load.ugrid.BasicLoadingTime.time_load_file(200000)                                                   |
|          | 13.6±0.5ms           | 13.7±0.3ms          | 1.00    | load.ugrid.BasicLoadingTime.time_load_mesh(1)                                                        |
|          | 16.3±0.2ms           | 16.4±0.5ms          | 1.00    | load.ugrid.BasicLoadingTime.time_load_mesh(200000)                                                   |
|          | 17.9±0.3ms           | 18.0±0.8ms          | 1.00    | load.ugrid.Callback.time_load_file_callback(1)                                                       |
|          | 44.3±1ms             | 46.7±1ms            | 1.05    | load.ugrid.Callback.time_load_file_callback(200000)                                                  |
|          | 17.8±0.4ms           | 18.3±0.5ms          | 1.03    | load.ugrid.CallbackTime.time_load_file_callback(1)                                                   |
|          | 21.2±0.9ms           | 21.7±0.7ms          | 1.02    | load.ugrid.CallbackTime.time_load_file_callback(200000)                                              |
|          | 2.71±0.1ms           | 2.70±0.1ms          | 1.00    | load.ugrid.DataRealisation.time_realise_data(10000)                                                  |
|          | 5.39±0.2ms           | 5.48±0.3ms          | 1.02    | load.ugrid.DataRealisation.time_realise_data(200000)                                                 |
|          | 39.5±1ms             | 40.3±2ms            | 1.02    | load.ugrid.DataRealisationTime.time_realise_data(10000)                                              |
|          | 805±6ms              | 801±8ms             | 1.00    | load.ugrid.DataRealisationTime.time_realise_data(200000)                                             |
|          | 101±4ns              | 103±1ns             | 1.02    | metadata_manager_factory.MetadataManagerFactory.time_AncillaryVariableMetadata_fields                |
|          | 915±20ns             | 894±6ns             | 0.98    | metadata_manager_factory.MetadataManagerFactory.time_AncillaryVariableMetadata_values                |
|          | 103±5ns              | 103±0.9ns           | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_BaseMetadata_fields                             |
|          | 911±10ns             | 901±10ns            | 0.99    | metadata_manager_factory.MetadataManagerFactory.time_BaseMetadata_values                             |
|          | 108±5ns              | 103±0.7ns           | 0.95    | metadata_manager_factory.MetadataManagerFactory.time_CellMeasuresMetadata_fields                     |
|          | 1.01±0.02μs          | 1.00±0μs            | 0.99    | metadata_manager_factory.MetadataManagerFactory.time_CellMeasuresMetadata_values                     |
|          | 100±0.3ns            | 102±0.4ns           | 1.02    | metadata_manager_factory.MetadataManagerFactory.time_CoordMetadata_fields                            |
|          | 1.08±0.02μs          | 1.10±0.01μs         | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_CoordMetadata_values                            |
|          | 101±10ns             | 102±0.5ns           | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_CubeMetadata_fields                             |
|          | 1.01±0.02μs          | 1.01±0.01μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_CubeMetadata_values                             |
|          | 101±0.3ns            | 102±0.5ns           | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_DimCoordMetadata_fields                         |
|          | 1.16±0.01μs          | 1.15±0μs            | 0.99    | metadata_manager_factory.MetadataManagerFactory.time_DimCoordMetadata_values                         |
|          | 987±10ns             | 982±5ns             | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(1)            |
|          | 6.74±0.06μs          | 6.79±0.09μs         | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(10)           |
|          | 62.9±0.2μs           | 63.7±0.6μs          | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(100)          |
|          | 992±10ns             | 979±4ns             | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(1)                         |
|          | 6.71±0.02μs          | 6.75±0.08μs         | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(10)                        |
|          | 63.3±0.2μs           | 63.7±0.5μs          | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(100)                       |
|          | 1.05±0.02μs          | 1.02±0.01μs         | 0.98    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(1)                  |
|          | 7.27±0.1μs           | 7.26±0.03μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(10)                 |
|          | 67.6±0.9μs           | 68.6±0.3μs          | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(100)                |
|          | 1.09±0.01μs          | 1.07±0.01μs         | 0.97    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(1)                        |
|          | 7.49±0.04μs          | 7.68±0.09μs         | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(10)                       |
|          | 71.5±0.9μs           | 74.1±1μs            | 1.04    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(100)                      |
|          | 1.05±0.02μs          | 1.05±0.01μs         | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(1)                         |
|          | 7.19±0.1μs           | 7.25±0.1μs          | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(10)                        |
|          | 67.0±2μs             | 68.8±0.7μs          | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(100)                       |
|          | 1.12±0.01μs          | 1.11±0.01μs         | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(1)                     |
|          | 7.99±0.04μs          | 7.99±0.04μs         | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(10)                    |
|          | 75.0±1μs             | 77.9±0.9μs          | 1.04    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(100)                   |
|          | 106±0.8ns            | 107±0.2ns           | 1.00    | mixin.CFVariableMixin.time_get_attributes                                                            |
|          | 108±1ns              | 107±0.8ns           | 1.00    | mixin.CFVariableMixin.time_get_long_name                                                             |
|          | 973±10ns             | 940±7ns             | 0.97    | mixin.CFVariableMixin.time_get_metadata                                                              |
|          | 107±0.9ns            | 109±2ns             | 1.02    | mixin.CFVariableMixin.time_get_standard_name                                                         |
|          | 110±1ns              | 107±0.8ns           | 0.97    | mixin.CFVariableMixin.time_get_units                                                                 |
|          | 107±0.7ns            | 107±0.6ns           | 0.99    | mixin.CFVariableMixin.time_get_var_name                                                              |
|          | 714±30ns             | 694±10ns            | 0.97    | mixin.CFVariableMixin.time_set_attributes                                                            |
|          | 114±3ns              | 115±0.7ns           | 1.01    | mixin.CFVariableMixin.time_set_long_name                                                             |
|          | 3.49±0.03μs          | 3.46±0.02μs         | 0.99    | mixin.CFVariableMixin.time_set_metadata__dict                                                        |
|          | 4.40±0.02μs          | 4.36±0.03μs         | 0.99    | mixin.CFVariableMixin.time_set_metadata__metadata                                                    |
|          | 4.29±0.05μs          | 4.30±0.04μs         | 1.00    | mixin.CFVariableMixin.time_set_metadata__tuple                                                       |
|          | 556±3ns              | 532±4ns             | 0.96    | mixin.CFVariableMixin.time_set_standard_name                                                         |
|          | 424±4ns              | 426±8ns             | 1.01    | mixin.CFVariableMixin.time_set_units                                                                 |
|          | 445±4ns              | 429±2ns             | 0.96    | mixin.CFVariableMixin.time_set_var_name                                                              |
|          | 370±2ms              | 368±2ms             | 0.99    | plot.AuxSort.time_aux_sort                                                                           |
|          | 75.6±5ms             | 76.2±2ms            | 1.01    | regridding.CurvilinearRegridding.time_regrid_pic                                                     |
|          | 95.9±1ms             | 96.3±1ms            | 1.00    | regridding.HorizontalChunkedRegridding.time_regrid_area_w                                            |
|          | 47.5±2ms             | 49.0±2ms            | 1.03    | regridding.HorizontalChunkedRegridding.time_regrid_area_w_new_grid                                   |
|          | 3.84±0.09ms          | 4.07±0.1ms          | 1.06    | save.NetcdfSave.time_netcdf_save_cube(50, False)                                                     |
|          | 88.2±1ms             | 93.8±1ms            | 1.06    | save.NetcdfSave.time_netcdf_save_cube(50, True)                                                      |
|          | 54.5±3ms             | 54.7±1ms            | 1.00    | save.NetcdfSave.time_netcdf_save_cube(600, False)                                                    |
|          | 584±7ms              | 589±4ms             | 1.01    | save.NetcdfSave.time_netcdf_save_cube(600, True)                                                     |
|          | 104±2ns              | 101±1ns             | 0.97    | save.NetcdfSave.time_netcdf_save_mesh(50, False)                                                     |
|          | 73.6±1ms             | 77.8±0.7ms          | 1.06    | save.NetcdfSave.time_netcdf_save_mesh(50, True)                                                      |
|          | 107±9ns              | 102±2ns             | 0.95    | save.NetcdfSave.time_netcdf_save_mesh(600, False)                                                    |
|          | 518±4ms              | 517±3ms             | 1.00    | save.NetcdfSave.time_netcdf_save_mesh(600, True)                                                     |
|          | 36.0±0.6ms           | 41.9±1ms            | 1.16    | stats.PearsonR.time_lazy                                                                             |
|          | 19.1±0.3ms           | 18.9±0.3ms          | 0.99    | stats.PearsonR.time_real                                                                             |
|          | 23.4±0.5ms           | 23.6±1ms            | 1.01    | trajectory.TrajectoryInterpolation.time_trajectory_linear                                            |
|          | 60.2±0.5ms           | 59.5±0.3ms          | 0.99    | trajectory.TrajectoryInterpolation.time_trajectory_nearest                                           |

Benchmarks that have got worse:

| Change   | Before [c6151e81]    | After [bf992234]    |   Ratio | Benchmark (Parameter)                                      |
|----------|----------------------|---------------------|---------|------------------------------------------------------------|
| +        | 1.51±0.03ms          | 1.88±0.03ms         |    1.24 | experimental.ugrid.Connectivity.time_create(6)             |
| +        | 252±4μs              | 359±5μs             |    1.42 | experimental.ugrid.Mesh.time_add_connectivities(6)         |
| +        | 306±6μs              | 412±5μs             |    1.35 | experimental.ugrid.Mesh.time_create(6)                     |
| +        | 295±7μs              | 406±20μs            |    1.38 | experimental.ugrid.MeshLazy.time_add_connectivities(6)     |
| +        | 340±10μs             | 464±10μs            |    1.36 | experimental.ugrid.MeshLazy.time_create(6)                 |
| +        | 287±5ms              | 351±5ms             |    1.22 | load.StructuredFF.time_structured_load((2, 2, 1000), True) |
```

</details>

Generated by GHA run [`8235232861`](https://github.com/SciTools/iris/actions/runs/8235232861)


# :stopwatch: Performance Benchmark Report: 192955c8

<details>
<summary>Performance shifts</summary>

```
| Change   | Before [9c431a01]    | After [192955c8]    |   Ratio | Benchmark (Parameter)                                      |
|----------|----------------------|---------------------|---------|------------------------------------------------------------|
| +        | 253±2μs              | 365±6μs             |    1.44 | experimental.ugrid.Mesh.time_add_connectivities(6)         |
| +        | 303±3μs              | 404±10μs            |    1.33 | experimental.ugrid.Mesh.time_create(6)                     |
| +        | 294±10μs             | 397±7μs             |    1.35 | experimental.ugrid.MeshLazy.time_add_connectivities(6)     |
| +        | 338±10μs             | 449±10μs            |    1.33 | experimental.ugrid.MeshLazy.time_create(6)                 |
| +        | 288±5ms              | 357±4ms             |    1.24 | load.StructuredFF.time_structured_load((2, 2, 1000), True) |
```

</details>

<details>
<summary>Full benchmark results</summary>

```

Benchmarks that have stayed the same:

| Change   | Before [9c431a01]    | After [192955c8]    | Ratio   | Benchmark (Parameter)                                                                                |
|----------|----------------------|---------------------|---------|------------------------------------------------------------------------------------------------------|
|          | n/a                  | n/a                 | n/a     | aux_factory.FactoryCommon.time_create                                                                |
|          | 4.34±0.06μs          | 4.33±0.08μs         | 1.00    | aux_factory.HybridHeightFactory.time_create                                                          |
|          | 4.99±0.06μs          | 4.90±0.1μs          | 0.98    | coords.AncillaryVariable.time_create                                                                 |
|          | 433±6ns              | 422±20ns            | 0.98    | coords.AuxCoord.time_bounds                                                                          |
|          | 8.87±0.05μs          | 8.97±0.06μs         | 1.01    | coords.AuxCoord.time_create                                                                          |
|          | 415±6ns              | 403±5ns             | 0.97    | coords.AuxCoord.time_points                                                                          |
|          | 230±20μs             | 243±20μs            | 1.06    | coords.AuxCoordLazy.time_bounds                                                                      |
|          | 12.8±0.7μs           | 12.8±0.6μs          | 1.00    | coords.AuxCoordLazy.time_create                                                                      |
|          | 226±20μs             | 242±20μs            | 1.07    | coords.AuxCoordLazy.time_points                                                                      |
|          | 5.39±0.04μs          | 5.40±0.07μs         | 1.00    | coords.CellMeasure.time_create                                                                       |
|          | 1.12±0.02μs          | 1.10±0.01μs         | 0.99    | coords.CellMethod.time_create                                                                        |
|          | n/a                  | n/a                 | n/a     | coords.CoordCommon.time_create                                                                       |
|          | 114±1μs              | 111±1μs             | 0.97    | coords.DimCoord.time_create                                                                          |
|          | 32.6±0.5μs           | 32.3±0.4μs          | 0.99    | coords.DimCoord.time_regular                                                                         |
|          | 379±5ms              | 374±2ms             | 0.99    | cube.Aggregation.time_aggregated_by                                                                  |
|          | 59.2±0.6μs           | 58.2±1μs            | 0.98    | cube.AncillaryVariable.time_add                                                                      |
|          | 11.2±0.1μs           | 11.4±0.4μs          | 1.02    | cube.AncillaryVariable.time_create                                                                   |
|          | 67.5±0.4μs           | 65.9±0.7μs          | 0.98    | cube.AuxCoord.time_add                                                                               |
|          | 9.71±0.1μs           | 9.52±0.1μs          | 0.98    | cube.AuxCoord.time_create                                                                            |
|          | 5.92±0.05μs          | 5.95±0.06μs         | 1.01    | cube.AuxCoord.time_return_coord_dims                                                                 |
|          | 4.43±0.07μs          | 4.44±0.05μs         | 1.00    | cube.AuxCoord.time_return_coords                                                                     |
|          | 40.8±0.09μs          | 40.3±0.6μs          | 0.99    | cube.AuxFactory.time_add                                                                             |
|          | 12.8±0.2μs           | 12.6±0.4μs          | 0.99    | cube.AuxFactory.time_create                                                                          |
|          | 59.3±0.4μs           | 58.4±0.5μs          | 0.98    | cube.CellMeasure.time_add                                                                            |
|          | 11.6±0.2μs           | 11.7±0.2μs          | 1.01    | cube.CellMeasure.time_create                                                                         |
|          | 53.0±0.5μs           | 52.1±0.5μs          | 0.98    | cube.CellMethod.time_add                                                                             |
|          | 7.35±0.05μs          | 7.16±0.04μs         | 0.97    | cube.CellMethod.time_create                                                                          |
|          | n/a                  | n/a                 | n/a     | cube.ComponentCommon.time_add                                                                        |
|          | n/a                  | n/a                 | n/a     | cube.ComponentCommon.time_create                                                                     |
|          | 130±0.1ms            | 130±0.5ms           | 1.00    | cube.Concatenate.time_concatenate                                                                    |
|          | 6.74±0.06μs          | 6.67±0.05μs         | 0.99    | cube.Cube.time_basic                                                                                 |
|          | 59.1±2ns             | 58.4±2ns            | 0.99    | cube.Cube.time_rename                                                                                |
|          | 61.5±0.3μs           | 61.1±0.6μs          | 0.99    | cube.Equality.time_equality                                                                          |
|          | 330±2ms              | 326±3ms             | 0.99    | cube.Merge.time_merge                                                                                |
|          | 27.9±2μs             | 26.3±0.9μs          | 0.94    | cube.MeshCoord.time_add(10000)                                                                       |
|          | 30.0±1μs             | 30.6±2μs            | 1.02    | cube.MeshCoord.time_add(1000000)                                                                     |
|          | 24.9±0.8μs           | 23.8±0.7μs          | 0.96    | cube.MeshCoord.time_add(6)                                                                           |
|          | 19.5±0.3μs           | 19.5±0.3μs          | 1.00    | cube.MeshCoord.time_create(10000)                                                                    |
|          | 19.6±0.4μs           | 19.5±0.2μs          | 0.99    | cube.MeshCoord.time_create(1000000)                                                                  |
|          | 19.1±0.3μs           | 18.8±0.3μs          | 0.98    | cube.MeshCoord.time_create(6)                                                                        |
|          | 52.5±5μs             | 45.2±6μs            | 0.86    | cube.MeshCoord.time_remove(10000)                                                                    |
|          | 58.0±3μs             | 57.1±2μs            | 0.98    | cube.MeshCoord.time_remove(1000000)                                                                  |
|          | 42.0±4μs             | 40.7±4μs            | 0.97    | cube.MeshCoord.time_remove(6)                                                                        |
|          | 2.04±0.2ms           | 2.56±0.1ms          | ~1.26   | experimental.ugrid.Connectivity.time_create(1000000)                                                 |
|          | 1.53±0.01ms          | 1.83±0.04ms         | 1.20    | experimental.ugrid.Connectivity.time_create(6)                                                       |
|          | 613±10ns             | 600±7ns             | 0.98    | experimental.ugrid.Connectivity.time_indices(1000000)                                                |
|          | 615±10ns             | 605±10ns            | 0.98    | experimental.ugrid.Connectivity.time_indices(6)                                                      |
|          | 20.6±2ms             | 23.0±2ms            | 1.11    | experimental.ugrid.Connectivity.time_location_lengths(1000000)                                       |
|          | 2.24±0.03ms          | 2.67±0.06ms         | 1.19    | experimental.ugrid.Connectivity.time_location_lengths(6)                                             |
|          | 22.7±3ms             | 26.9±3ms            | 1.19    | experimental.ugrid.Connectivity.time_validate_indices(1000000)                                       |
|          | 3.33±0.04ms          | 3.98±0.06ms         | 1.19    | experimental.ugrid.Connectivity.time_validate_indices(6)                                             |
|          | 3.60±0.1ms           | 3.94±0.1ms          | 1.10    | experimental.ugrid.ConnectivityLazy.time_create(1000000)                                             |
|          | 2.68±0.05ms          | 3.19±0.04ms         | 1.19    | experimental.ugrid.ConnectivityLazy.time_create(6)                                                   |
|          | 241±9μs              | 257±9μs             | 1.06    | experimental.ugrid.ConnectivityLazy.time_indices(1000000)                                            |
|          | 237±10μs             | 250±8μs             | 1.06    | experimental.ugrid.ConnectivityLazy.time_indices(6)                                                  |
|          | 19.4±0.4ms           | 19.8±0.5ms          | 1.02    | experimental.ugrid.ConnectivityLazy.time_location_lengths(1000000)                                   |
|          | 2.53±0.03ms          | 2.94±0.06ms         | 1.16    | experimental.ugrid.ConnectivityLazy.time_location_lengths(6)                                         |
|          | 21.9±0.6ms           | 22.5±0.5ms          | 1.02    | experimental.ugrid.ConnectivityLazy.time_validate_indices(1000000)                                   |
|          | 3.65±0.05ms          | 4.26±0.06ms         | 1.17    | experimental.ugrid.ConnectivityLazy.time_validate_indices(6)                                         |
|          | 12.9±0.1μs           | 12.9±0.1μs          | 1.00    | experimental.ugrid.Mesh.time_add_connectivities(1000000)                                             |
|          | 4.91±0.05μs          | 4.85±0.05μs         | 0.99    | experimental.ugrid.Mesh.time_add_coords(1000000)                                                     |
|          | 4.87±0.04μs          | 4.83±0.07μs         | 0.99    | experimental.ugrid.Mesh.time_add_coords(6)                                                           |
|          | 5.10±0.04μs          | 4.97±0.08μs         | 0.97    | experimental.ugrid.Mesh.time_connectivities(1000000)                                                 |
|          | 4.99±0.09μs          | 5.05±0.09μs         | 1.01    | experimental.ugrid.Mesh.time_connectivities(6)                                                       |
|          | 5.89±0.07μs          | 5.90±0.05μs         | 1.00    | experimental.ugrid.Mesh.time_coords(1000000)                                                         |
|          | 5.87±0.05μs          | 5.82±0.05μs         | 0.99    | experimental.ugrid.Mesh.time_coords(6)                                                               |
|          | 46.8±0.5μs           | 46.2±0.7μs          | 0.99    | experimental.ugrid.Mesh.time_create(1000000)                                                         |
|          | 71.2±2ms             | 72.2±2ms            | 1.01    | experimental.ugrid.Mesh.time_eq(1000000)                                                             |
|          | 274±7μs              | 275±4μs             | 1.00    | experimental.ugrid.Mesh.time_eq(6)                                                                   |
|          | 5.00±0.07μs          | 4.92±0.06μs         | 0.98    | experimental.ugrid.Mesh.time_remove_connectivities(1000000)                                          |
|          | 4.93±0.07μs          | 4.90±0.07μs         | 0.99    | experimental.ugrid.Mesh.time_remove_connectivities(6)                                                |
|          | 7.32±0.09μs          | 7.18±0.09μs         | 0.98    | experimental.ugrid.Mesh.time_remove_coords(1000000)                                                  |
|          | 7.37±0.1μs           | 7.33±0.07μs         | 0.99    | experimental.ugrid.Mesh.time_remove_coords(6)                                                        |
|          | 10.5±0.07μs          | 10.5±0.09μs         | 1.00    | experimental.ugrid.MeshCoord.time_bounds(10000)                                                      |
|          | 117±1ms              | 118±1ms             | 1.01    | experimental.ugrid.MeshCoord.time_bounds(1000000)                                                    |
|          | 5.35±0.06μs          | 5.31±0.06μs         | 0.99    | experimental.ugrid.MeshCoord.time_bounds(6)                                                          |
|          | 3.21±0.03ms          | 3.64±0.05ms         | 1.13    | experimental.ugrid.MeshCoord.time_create(10000)                                                      |
|          | 3.23±0.04ms          | 3.60±0.04ms         | 1.11    | experimental.ugrid.MeshCoord.time_create(1000000)                                                    |
|          | 202±2μs              | 200±1μs             | 0.99    | experimental.ugrid.MeshCoord.time_create(6)                                                          |
|          | 3.66±0.03μs          | 3.63±0.03μs         | 0.99    | experimental.ugrid.MeshCoord.time_points(10000)                                                      |
|          | 4.15±0.04μs          | 4.13±0.03μs         | 1.00    | experimental.ugrid.MeshCoord.time_points(1000000)                                                    |
|          | 2.92±0.04μs          | 2.90±0.04μs         | 0.99    | experimental.ugrid.MeshCoord.time_points(6)                                                          |
|          | 6.87±0.1ms           | 7.36±0.1ms          | 1.07    | experimental.ugrid.MeshCoordLazy.time_bounds(10000)                                                  |
|          | 118±2ms              | 118±2ms             | 1.00    | experimental.ugrid.MeshCoordLazy.time_bounds(1000000)                                                |
|          | 11.6±0.6μs           | 11.8±0.6μs          | 1.02    | experimental.ugrid.MeshCoordLazy.time_bounds(6)                                                      |
|          | 3.27±0.03ms          | 3.65±0.03ms         | 1.12    | experimental.ugrid.MeshCoordLazy.time_create(10000)                                                  |
|          | 3.24±0.03ms          | 3.69±0.06ms         | 1.14    | experimental.ugrid.MeshCoordLazy.time_create(1000000)                                                |
|          | 238±10μs             | 234±5μs             | 0.98    | experimental.ugrid.MeshCoordLazy.time_create(6)                                                      |
|          | 2.38±0.08ms          | 2.50±0.09ms         | 1.05    | experimental.ugrid.MeshCoordLazy.time_points(10000)                                                  |
|          | 4.40±0.06ms          | 4.46±0.1ms          | 1.01    | experimental.ugrid.MeshCoordLazy.time_points(1000000)                                                |
|          | 7.95±0.5μs           | 7.95±0.6μs          | 1.00    | experimental.ugrid.MeshCoordLazy.time_points(6)                                                      |
|          | 33.0±1μs             | 32.2±1μs            | 0.98    | experimental.ugrid.MeshLazy.time_add_connectivities(1000000)                                         |
|          | 19.8±1μs             | 18.9±0.9μs          | 0.96    | experimental.ugrid.MeshLazy.time_add_coords(1000000)                                                 |
|          | 15.7±0.9μs           | 15.1±0.5μs          | 0.96    | experimental.ugrid.MeshLazy.time_add_coords(6)                                                       |
|          | 17.0±0.8μs           | 16.6±0.7μs          | 0.98    | experimental.ugrid.MeshLazy.time_connectivities(1000000)                                             |
|          | 16.3±0.5μs           | 16.0±0.3μs          | 0.98    | experimental.ugrid.MeshLazy.time_connectivities(6)                                                   |
|          | 19.2±0.4μs           | 18.9±0.6μs          | 0.99    | experimental.ugrid.MeshLazy.time_coords(1000000)                                                     |
|          | 18.7±0.5μs           | 18.4±0.4μs          | 0.99    | experimental.ugrid.MeshLazy.time_coords(6)                                                           |
|          | 78.9±2μs             | 77.6±2μs            | 0.98    | experimental.ugrid.MeshLazy.time_create(1000000)                                                     |
|          | 73.0±3ms             | 75.1±3ms            | 1.03    | experimental.ugrid.MeshLazy.time_eq(1000000)                                                         |
|          | 344±10μs             | 339±10μs            | 0.99    | experimental.ugrid.MeshLazy.time_eq(6)                                                               |
|          | 17.9±0.5μs           | 17.8±0.5μs          | 1.00    | experimental.ugrid.MeshLazy.time_remove_connectivities(1000000)                                      |
|          | 17.1±0.6μs           | 16.9±0.6μs          | 0.99    | experimental.ugrid.MeshLazy.time_remove_connectivities(6)                                            |
|          | 31.4±0.8μs           | 31.1±1μs            | 0.99    | experimental.ugrid.MeshLazy.time_remove_coords(1000000)                                              |
|          | 29.2±0.9μs           | 29.4±1μs            | 1.01    | experimental.ugrid.MeshLazy.time_remove_coords(6)                                                    |
|          | n/a                  | n/a                 | n/a     | experimental.ugrid.UGridCommon.time_create(1000000)                                                  |
|          | n/a                  | n/a                 | n/a     | experimental.ugrid.UGridCommon.time_create(6)                                                        |
|          | 501±6ns              | 527±8ns             | 1.05    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(50)               |
|          | 249±2ms              | 249±2ms             | 1.00    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(500)              |
|          | 11.7±0.1ms           | 13.6±0.2ms          | 1.16    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(50)            |
|          | 13.5±0.4ms           | 15.2±0.4ms          | 1.12    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(500)           |
|          | 5.0                  | 5.0                 | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(50)  |
|          | 5.0                  | 5.0                 | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(500) |
|          | 125±1ms              | 132±2ms             | 1.06    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(50)          |
|          | 726±3ms              | 727±7ms             | 1.00    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(500)         |
|          | 85.7±0.6ms           | 94.2±1ms            | 1.10    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(50)                              |
|          | 679±3ms              | 684±3ms             | 1.01    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(500)                             |
|          | 2.1752849999999997   | 2.1752849999999997  | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(50)                   |
|          | 216.01528499999998   | 216.01528499999998  | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(500)                  |
|          | 566±4μs              | 567±5μs             | 1.00    | import_iris.Iris.time__concatenate                                                                   |
|          | 162±2μs              | 163±3μs             | 1.00    | import_iris.Iris.time__constraints                                                                   |
|          | 99.6±2μs             | 99.9±1μs            | 1.00    | import_iris.Iris.time__data_manager                                                                  |
|          | 83.7±0.9μs           | 84.9±0.7μs          | 1.01    | import_iris.Iris.time__deprecation                                                                   |
|          | 108±1μs              | 111±2μs             | 1.02    | import_iris.Iris.time__lazy_data                                                                     |
|          | 784±5μs              | 785±8μs             | 1.00    | import_iris.Iris.time__merge                                                                         |
|          | 70.3±0.9μs           | 71.7±0.5μs          | 1.02    | import_iris.Iris.time__representation                                                                |
|          | 428±3μs              | 434±5μs             | 1.01    | import_iris.Iris.time_analysis                                                                       |
|          | 126±0.7μs            | 128±2μs             | 1.02    | import_iris.Iris.time_analysis__area_weighted                                                        |
|          | 98.0±1μs             | 99.0±2μs            | 1.01    | import_iris.Iris.time_analysis__grid_angles                                                          |
|          | 218±4μs              | 218±2μs             | 1.00    | import_iris.Iris.time_analysis__interpolation                                                        |
|          | 167±1μs              | 168±3μs             | 1.01    | import_iris.Iris.time_analysis__regrid                                                               |
|          | 101±0.6μs            | 102±1μs             | 1.01    | import_iris.Iris.time_analysis__scipy_interpolate                                                    |
|          | 126±0.7μs            | 128±2μs             | 1.02    | import_iris.Iris.time_analysis_calculus                                                              |
|          | 281±5μs              | 280±3μs             | 1.00    | import_iris.Iris.time_analysis_cartography                                                           |
|          | 83.9±0.5μs           | 84.9±0.7μs          | 1.01    | import_iris.Iris.time_analysis_geomerty                                                              |
|          | 196±2μs              | 202±4μs             | 1.03    | import_iris.Iris.time_analysis_maths                                                                 |
|          | 89.4±0.6μs           | 90.6±0.8μs          | 1.01    | import_iris.Iris.time_analysis_stats                                                                 |
|          | 166±1μs              | 167±4μs             | 1.00    | import_iris.Iris.time_analysis_trajectory                                                            |
|          | 266±5μs              | 266±3μs             | 1.00    | import_iris.Iris.time_aux_factory                                                                    |
|          | 79.4±0.8μs           | 80.1±0.6μs          | 1.01    | import_iris.Iris.time_common                                                                         |
|          | 151±1μs              | 152±3μs             | 1.01    | import_iris.Iris.time_common_lenient                                                                 |
|          | 869±7μs              | 885±10μs            | 1.02    | import_iris.Iris.time_common_metadata                                                                |
|          | 123±0.9μs            | 123±0.9μs           | 1.00    | import_iris.Iris.time_common_mixin                                                                   |
|          | 1.03±0.01ms          | 1.02±0.01ms         | 0.99    | import_iris.Iris.time_common_resolve                                                                 |
|          | 184±4μs              | 188±3μs             | 1.02    | import_iris.Iris.time_config                                                                         |
|          | 104±0.4μs            | 107±0.9μs           | 1.03    | import_iris.Iris.time_coord_categorisation                                                           |
|          | 314±3μs              | 321±3μs             | 1.02    | import_iris.Iris.time_coord_systems                                                                  |
|          | 644±8μs              | 647±20μs            | 1.00    | import_iris.Iris.time_coords                                                                         |
|          | 585±7μs              | 587±5μs             | 1.00    | import_iris.Iris.time_cube                                                                           |
|          | 206±3μs              | 208±4μs             | 1.01    | import_iris.Iris.time_exceptions                                                                     |
|          | 72.0±1μs             | 72.1±0.4μs          | 1.00    | import_iris.Iris.time_experimental                                                                   |
|          | 195±2μs              | 193±1μs             | 0.99    | import_iris.Iris.time_fileformats                                                                    |
|          | 224±2μs              | 227±2μs             | 1.01    | import_iris.Iris.time_fileformats__ff                                                                |
|          | 2.42±0.01ms          | 2.42±0.03ms         | 1.00    | import_iris.Iris.time_fileformats__ff_cross_references                                               |
|          | 73.5±0.3μs           | 73.2±0.4μs          | 1.00    | import_iris.Iris.time_fileformats__pp_lbproc_pairs                                                   |
|          | 106±2μs              | 107±1μs             | 1.01    | import_iris.Iris.time_fileformats_abf                                                                |
|          | 314±4μs              | 316±4μs             | 1.00    | import_iris.Iris.time_fileformats_cf                                                                 |
|          | 5.31±0.09ms          | 5.30±0.06ms         | 1.00    | import_iris.Iris.time_fileformats_dot                                                                |
|          | 67.5±0.7μs           | 69.0±0.4μs          | 1.02    | import_iris.Iris.time_fileformats_name                                                               |
|          | 235±4μs              | 241±4μs             | 1.02    | import_iris.Iris.time_fileformats_name_loaders                                                       |
|          | 112±2μs              | 113±1μs             | 1.00    | import_iris.Iris.time_fileformats_netcdf                                                             |
|          | 113±0.7μs            | 112±1μs             | 0.99    | import_iris.Iris.time_fileformats_nimrod                                                             |
|          | 189±3μs              | 190±2μs             | 1.01    | import_iris.Iris.time_fileformats_nimrod_load_rules                                                  |
|          | 672±8μs              | 677±4μs             | 1.01    | import_iris.Iris.time_fileformats_pp                                                                 |
|          | 158±2μs              | 160±1μs             | 1.02    | import_iris.Iris.time_fileformats_pp_load_rules                                                      |
|          | 119±0.9μs            | 124±2μs             | 1.04    | import_iris.Iris.time_fileformats_pp_save_rules                                                      |
|          | 441±5μs              | 440±3μs             | 1.00    | import_iris.Iris.time_fileformats_rules                                                              |
|          | 194±2μs              | 193±3μs             | 0.99    | import_iris.Iris.time_fileformats_structured_array_identification                                    |
|          | 78.4±0.9μs           | 79.4±0.2μs          | 1.01    | import_iris.Iris.time_fileformats_um                                                                 |
|          | 151±1μs              | 150±3μs             | 1.00    | import_iris.Iris.time_fileformats_um__fast_load                                                      |
|          | 129±1μs              | 131±2μs             | 1.01    | import_iris.Iris.time_fileformats_um__fast_load_structured_fields                                    |
|          | 70.2±0.6μs           | 70.5±0.5μs          | 1.00    | import_iris.Iris.time_fileformats_um__ff_replacement                                                 |
|          | 77.3±0.7μs           | 78.0±0.7μs          | 1.01    | import_iris.Iris.time_fileformats_um__optimal_array_structuring                                      |
|          | 875±3μs              | 864±4μs             | 0.99    | import_iris.Iris.time_fileformats_um_cf_map                                                          |
|          | 125±0.4μs            | 128±2μs             | 1.02    | import_iris.Iris.time_io                                                                             |
|          | 158±2μs              | 159±2μs             | 1.00    | import_iris.Iris.time_io_format_picker                                                               |
|          | 193±1μs              | 193±2μs             | 1.00    | import_iris.Iris.time_iris                                                                           |
|          | 118±0.9μs            | 118±1μs             | 1.00    | import_iris.Iris.time_iterate                                                                        |
|          | 8.16±0.05ms          | 8.10±0.09ms         | 0.99    | import_iris.Iris.time_palette                                                                        |
|          | 298±3μs              | 300±3μs             | 1.01    | import_iris.Iris.time_plot                                                                           |
|          | 92.1±0.4μs           | 93.1±1μs            | 1.01    | import_iris.Iris.time_quickplot                                                                      |
|          | 1.94±0.01ms          | 1.90±0.01ms         | 0.98    | import_iris.Iris.time_std_names                                                                      |
|          | 1.74±0.02ms          | 1.71±0.01ms         | 0.98    | import_iris.Iris.time_symbols                                                                        |
|          | 41.9±0.8ms           | 41.8±0.7ms          | 1.00    | import_iris.Iris.time_tests                                                                          |
|          | 221±3μs              | 220±2μs             | 1.00    | import_iris.Iris.time_third_party_cartopy                                                            |
|          | 4.79±0.02ms          | 4.76±0.02ms         | 0.99    | import_iris.Iris.time_third_party_cf_units                                                           |
|          | 104±2μs              | 103±0.8μs           | 0.99    | import_iris.Iris.time_third_party_cftime                                                             |
|          | 2.72±0.03ms          | 2.63±0.01ms         | 0.97    | import_iris.Iris.time_third_party_matplotlib                                                         |
|          | 1.01±0.01ms          | 1.01±0.01ms         | 1.00    | import_iris.Iris.time_third_party_numpy                                                              |
|          | 153±1μs              | 151±0.9μs           | 0.99    | import_iris.Iris.time_third_party_scipy                                                              |
|          | 91.9±1μs             | 91.1±1μs            | 0.99    | import_iris.Iris.time_time                                                                           |
|          | 282±2μs              | 291±5μs             | 1.03    | import_iris.Iris.time_util                                                                           |
|          | 84.1±2μs             | 82.1±1μs            | 0.98    | iterate.IZip.time_izip                                                                               |
|          | 7.40±0.08ms          | 7.77±0.08ms         | 1.05    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'FF')                                           |
|          | 23.2±0.2ms           | 22.9±0.1ms          | 0.99    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'NetCDF')                                       |
|          | 8.09±0.1ms           | 8.61±0.08ms         | 1.06    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'PP')                                           |
|          | 7.39±0.1ms           | 7.88±0.06ms         | 1.07    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'FF')                                            |
|          | 20.2±0.3ms           | 20.2±0.2ms          | 1.00    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'NetCDF')                                        |
|          | 8.19±0.04ms          | 8.67±0.1ms          | 1.06    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'PP')                                            |
|          | 1.24±0.02s           | 1.31±0.01s          | 1.05    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'FF')                                             |
|          | 19.3±0.2ms           | 19.2±0.1ms          | 1.00    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'NetCDF')                                         |
|          | 1.40±0.02s           | 1.47±0.01s          | 1.05    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'PP')                                             |
|          | 1.23±0.01s           | 1.31±0.01s          | 1.07    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'FF')                                              |
|          | 18.8±0.2ms           | 19.2±0.07ms         | 1.02    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'NetCDF')                                          |
|          | 1.38±0.03s           | 1.47±0.02s          | 1.07    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'PP')                                              |
|          | 3.58±0.04ms          | 3.76±0.04ms         | 1.05    | load.LoadAndRealise.time_load((50, 50, 2), False, 'FF')                                              |
|          | 18.5±0.2ms           | 18.7±0.1ms          | 1.01    | load.LoadAndRealise.time_load((50, 50, 2), False, 'NetCDF')                                          |
|          | 3.90±0.05ms          | 4.05±0.06ms         | 1.04    | load.LoadAndRealise.time_load((50, 50, 2), False, 'PP')                                              |
|          | 3.61±0.06ms          | 3.79±0.02ms         | 1.05    | load.LoadAndRealise.time_load((50, 50, 2), True, 'FF')                                               |
|          | 18.5±0.2ms           | 18.6±0.09ms         | 1.00    | load.LoadAndRealise.time_load((50, 50, 2), True, 'NetCDF')                                           |
|          | 3.85±0.05ms          | 4.03±0.03ms         | 1.05    | load.LoadAndRealise.time_load((50, 50, 2), True, 'PP')                                               |
|          | 32.2±3ms             | 31.7±3ms            | 0.99    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'FF')                                        |
|          | 19.0±0.2ms           | 19.2±0.4ms          | 1.01    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'NetCDF')                                    |
|          | 12.8±2ms             | 13.1±1ms            | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'PP')                                        |
|          | 25.0±0.6ms           | 25.4±2ms            | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'FF')                                         |
|          | 72.1±1ms             | 72.5±1ms            | 1.01    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'NetCDF')                                     |
|          | 25.1±1ms             | 25.6±2ms            | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'PP')                                         |
|          | 375±3ms              | 434±3ms             | 1.16    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'FF')                                          |
|          | 2.65±0.2ms           | 2.79±0.1ms          | 1.05    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'NetCDF')                                      |
|          | 382±5ms              | 442±4ms             | 1.16    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'PP')                                          |
|          | 381±5ms              | 442±3ms             | 1.16    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'FF')                                           |
|          | 2.77±0.09ms          | 2.87±0.09ms         | 1.04    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'NetCDF')                                       |
|          | 387±4ms              | 448±3ms             | 1.16    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'PP')                                           |
|          | 1.36±0.06ms          | 1.58±0.07ms         | 1.17    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'FF')                                           |
|          | 2.66±0.08ms          | 2.80±0.08ms         | 1.05    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'NetCDF')                                       |
|          | 1.37±0.09ms          | 1.54±0.1ms          | 1.12    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'PP')                                           |
|          | 1.39±0.07ms          | 1.55±0.07ms         | 1.12    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'FF')                                            |
|          | 2.81±0.1ms           | 2.90±0.1ms          | 1.04    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'NetCDF')                                        |
|          | 1.41±0.09ms          | 1.53±0.07ms         | 1.08    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'PP')                                            |
|          | 330±3ms              | 333±3ms             | 1.01    | load.ManyVars.time_many_var_load                                                                     |
|          | 7.59±0.07ms          | 8.05±0.02ms         | 1.06    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'FF')                                     |
|          | 8.27±0.1ms           | 8.87±0.07ms         | 1.07    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'PP')                                     |
|          | 1.24±0.01s           | 1.33±0.01s          | 1.07    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'FF')                                       |
|          | 1.42±0.01s           | 1.50±0.01s          | 1.06    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'PP')                                       |
|          | 3.65±0.05ms          | 3.83±0.02ms         | 1.05    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'FF')                                          |
|          | 3.91±0.06ms          | 4.10±0.03ms         | 1.05    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'PP')                                          |
|          | 7.44±0.1ms           | 7.88±0.06ms         | 1.06    | load.StructuredFF.time_structured_load((1280, 960, 5), False)                                        |
|          | 4.23±0.08ms          | 4.57±0.06ms         | 1.08    | load.StructuredFF.time_structured_load((1280, 960, 5), True)                                         |
|          | 1.24±0.02s           | 1.31±0.01s          | 1.06    | load.StructuredFF.time_structured_load((2, 2, 1000), False)                                          |
|          | 3.54±0.04ms          | 3.77±0.03ms         | 1.06    | load.StructuredFF.time_structured_load((2, 2, 2), False)                                             |
|          | 3.24±0.02ms          | 3.44±0.03ms         | 1.06    | load.StructuredFF.time_structured_load((2, 2, 2), True)                                              |
|          | 129±2ms              | 139±3ms             | 1.08    | load.TimeConstraint.time_time_constraint(20, 'FF')                                                   |
|          | 22.2±0.3ms           | 21.7±0.2ms          | 0.98    | load.TimeConstraint.time_time_constraint(20, 'NetCDF')                                               |
|          | 143±3ms              | 153±1ms             | 1.07    | load.TimeConstraint.time_time_constraint(20, 'PP')                                                   |
|          | 27.0±0.8ms           | 27.7±0.3ms          | 1.02    | load.TimeConstraint.time_time_constraint(3, 'FF')                                                    |
|          | 21.4±0.3ms           | 21.5±0.2ms          | 1.00    | load.TimeConstraint.time_time_constraint(3, 'NetCDF')                                                |
|          | 28.2±0.4ms           | 30.0±0.5ms          | 1.06    | load.TimeConstraint.time_time_constraint(3, 'PP')                                                    |
|          | 16.4±0.4ms           | 16.6±0.3ms          | 1.02    | load.ugrid.BasicLoading.time_load_file(1)                                                            |
|          | 36.0±0.9ms           | 38.2±0.4ms          | 1.06    | load.ugrid.BasicLoading.time_load_file(200000)                                                       |
|          | 13.3±0.3ms           | 13.6±0.3ms          | 1.02    | load.ugrid.BasicLoading.time_load_mesh(1)                                                            |
|          | 19.9±0.6ms           | 20.6±0.3ms          | 1.04    | load.ugrid.BasicLoading.time_load_mesh(200000)                                                       |
|          | 16.2±0.4ms           | 16.8±0.4ms          | 1.04    | load.ugrid.BasicLoadingTime.time_load_file(1)                                                        |
|          | 19.0±0.4ms           | 19.0±0.3ms          | 1.00    | load.ugrid.BasicLoadingTime.time_load_file(200000)                                                   |
|          | 13.2±0.3ms           | 13.4±0.1ms          | 1.01    | load.ugrid.BasicLoadingTime.time_load_mesh(1)                                                        |
|          | 15.7±0.7ms           | 16.0±0.7ms          | 1.01    | load.ugrid.BasicLoadingTime.time_load_mesh(200000)                                                   |
|          | 17.2±0.4ms           | 17.6±0.3ms          | 1.02    | load.ugrid.Callback.time_load_file_callback(1)                                                       |
|          | 42.9±1ms             | 46.1±0.9ms          | 1.07    | load.ugrid.Callback.time_load_file_callback(200000)                                                  |
|          | 17.3±0.4ms           | 17.9±0.3ms          | 1.03    | load.ugrid.CallbackTime.time_load_file_callback(1)                                                   |
|          | 20.8±0.7ms           | 20.7±0.4ms          | 1.00    | load.ugrid.CallbackTime.time_load_file_callback(200000)                                              |
|          | 2.49±0.1ms           | 2.60±0.08ms         | 1.04    | load.ugrid.DataRealisation.time_realise_data(10000)                                                  |
|          | 5.07±0.9ms           | 5.25±0.2ms          | 1.03    | load.ugrid.DataRealisation.time_realise_data(200000)                                                 |
|          | 36.6±1ms             | 38.3±2ms            | 1.05    | load.ugrid.DataRealisationTime.time_realise_data(10000)                                              |
|          | 789±4ms              | 781±5ms             | 0.99    | load.ugrid.DataRealisationTime.time_realise_data(200000)                                             |
|          | 102±1ns              | 102±0.4ns           | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_AncillaryVariableMetadata_fields                |
|          | 927±20ns             | 898±7ns             | 0.97    | metadata_manager_factory.MetadataManagerFactory.time_AncillaryVariableMetadata_values                |
|          | 104±2ns              | 102±0.9ns           | 0.98    | metadata_manager_factory.MetadataManagerFactory.time_BaseMetadata_fields                             |
|          | 917±10ns             | 900±9ns             | 0.98    | metadata_manager_factory.MetadataManagerFactory.time_BaseMetadata_values                             |
|          | 104±2ns              | 102±1ns             | 0.98    | metadata_manager_factory.MetadataManagerFactory.time_CellMeasuresMetadata_fields                     |
|          | 1.00±0.01μs          | 1.02±0.01μs         | 1.02    | metadata_manager_factory.MetadataManagerFactory.time_CellMeasuresMetadata_values                     |
|          | 101±0.8ns            | 101±0.3ns           | 1.00    | metadata_manager_factory.MetadataManagerFactory.time_CoordMetadata_fields                            |
|          | 1.06±0.02μs          | 1.11±0.01μs         | 1.05    | metadata_manager_factory.MetadataManagerFactory.time_CoordMetadata_values                            |
|          | 101±1ns              | 102±0.3ns           | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_CubeMetadata_fields                             |
|          | 994±5ns              | 999±10ns            | 1.01    | metadata_manager_factory.MetadataManagerFactory.time_CubeMetadata_values                             |
|          | 103±3ns              | 101±0.4ns           | 0.99    | metadata_manager_factory.MetadataManagerFactory.time_DimCoordMetadata_fields                         |
|          | 1.13±0μs             | 1.16±0.02μs         | 1.03    | metadata_manager_factory.MetadataManagerFactory.time_DimCoordMetadata_values                         |
|          | 999±10ns             | 989±10ns            | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(1)            |
|          | 6.77±0.1μs           | 6.76±0.1μs          | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(10)           |
|          | 65.0±1μs             | 64.8±0.7μs          | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_AncillaryVariableMetadata(100)          |
|          | 1.02±0.02μs          | 989±10ns            | 0.97    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(1)                         |
|          | 6.86±0.1μs           | 6.88±0.1μs          | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(10)                        |
|          | 63.7±1μs             | 65.7±1μs            | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_BaseMetadata(100)                       |
|          | 1.05±0.02μs          | 1.03±0μs            | 0.98    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(1)                  |
|          | 7.18±0.2μs           | 7.40±0.08μs         | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(10)                 |
|          | 68.1±1μs             | 70.0±0.6μs          | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_CellMeasureMetadata(100)                |
|          | 1.09±0.02μs          | 1.07±0.02μs         | 0.98    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(1)                        |
|          | 7.62±0.2μs           | 7.70±0.1μs          | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(10)                       |
|          | 72.2±1μs             | 74.4±3μs            | 1.03    | metadata_manager_factory.MetadataManagerFactory__create.time_CoordMetadata(100)                      |
|          | 1.07±0.02μs          | 1.04±0.01μs         | 0.98    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(1)                         |
|          | 7.23±0.1μs           | 7.39±0.08μs         | 1.02    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(10)                        |
|          | 70.1±3μs             | 69.9±1μs            | 1.00    | metadata_manager_factory.MetadataManagerFactory__create.time_CubeMetadata(100)                       |
|          | 1.14±0.03μs          | 1.12±0.01μs         | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(1)                     |
|          | 8.20±0.3μs           | 8.09±0.1μs          | 0.99    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(10)                    |
|          | 76.4±1μs             | 77.1±1μs            | 1.01    | metadata_manager_factory.MetadataManagerFactory__create.time_DimCoordMetadata(100)                   |
|          | 109±2ns              | 107±0.4ns           | 0.98    | mixin.CFVariableMixin.time_get_attributes                                                            |
|          | 109±3ns              | 107±0.2ns           | 0.97    | mixin.CFVariableMixin.time_get_long_name                                                             |
|          | 981±9ns              | 960±7ns             | 0.98    | mixin.CFVariableMixin.time_get_metadata                                                              |
|          | 109±0.8ns            | 107±0.2ns           | 0.98    | mixin.CFVariableMixin.time_get_standard_name                                                         |
|          | 110±2ns              | 107±0.7ns           | 0.97    | mixin.CFVariableMixin.time_get_units                                                                 |
|          | 109±2ns              | 107±0.4ns           | 0.98    | mixin.CFVariableMixin.time_get_var_name                                                              |
|          | 687±8ns              | 706±10ns            | 1.03    | mixin.CFVariableMixin.time_set_attributes                                                            |
|          | 117±2ns              | 113±0.2ns           | 0.97    | mixin.CFVariableMixin.time_set_long_name                                                             |
|          | 3.48±0.02μs          | 3.43±0.03μs         | 0.98    | mixin.CFVariableMixin.time_set_metadata__dict                                                        |
|          | 4.36±0.05μs          | 4.32±0.03μs         | 0.99    | mixin.CFVariableMixin.time_set_metadata__metadata                                                    |
|          | 4.37±0.05μs          | 4.24±0.06μs         | 0.97    | mixin.CFVariableMixin.time_set_metadata__tuple                                                       |
|          | 553±8ns              | 538±2ns             | 0.97    | mixin.CFVariableMixin.time_set_standard_name                                                         |
|          | 417±8ns              | 414±3ns             | 0.99    | mixin.CFVariableMixin.time_set_units                                                                 |
|          | 445±3ns              | 432±3ns             | 0.97    | mixin.CFVariableMixin.time_set_var_name                                                              |
|          | 363±2ms              | 367±2ms             | 1.01    | plot.AuxSort.time_aux_sort                                                                           |
|          | 76.2±1ms             | 78.4±4ms            | 1.03    | regridding.CurvilinearRegridding.time_regrid_pic                                                     |
|          | 96.6±0.7ms           | 96.6±0.7ms          | 1.00    | regridding.HorizontalChunkedRegridding.time_regrid_area_w                                            |
|          | 47.6±0.9ms           | 49.1±2ms            | 1.03    | regridding.HorizontalChunkedRegridding.time_regrid_area_w_new_grid                                   |
|          | 3.72±0.05ms          | 4.07±0.03ms         | 1.09    | save.NetcdfSave.time_netcdf_save_cube(50, False)                                                     |
|          | 85.8±0.9ms           | 93.6±0.9ms          | 1.09    | save.NetcdfSave.time_netcdf_save_cube(50, True)                                                      |
|          | 54.4±0.7ms           | 54.8±1ms            | 1.01    | save.NetcdfSave.time_netcdf_save_cube(600, False)                                                    |
|          | 577±3ms              | 587±5ms             | 1.02    | save.NetcdfSave.time_netcdf_save_cube(600, True)                                                     |
|          | 103±1ns              | 101±0.7ns           | 0.98    | save.NetcdfSave.time_netcdf_save_mesh(50, False)                                                     |
|          | 72.4±1ms             | 77.3±0.4ms          | 1.07    | save.NetcdfSave.time_netcdf_save_mesh(50, True)                                                      |
|          | 103±0.8ns            | 101±0.8ns           | 0.99    | save.NetcdfSave.time_netcdf_save_mesh(600, False)                                                    |
|          | 511±4ms              | 517±2ms             | 1.01    | save.NetcdfSave.time_netcdf_save_mesh(600, True)                                                     |
|          | 35.2±1ms             | 40.6±1ms            | 1.15    | stats.PearsonR.time_lazy                                                                             |
|          | 19.0±0.2ms           | 18.8±0.2ms          | 0.99    | stats.PearsonR.time_real                                                                             |
|          | 22.6±1ms             | 22.8±1ms            | 1.01    | trajectory.TrajectoryInterpolation.time_trajectory_linear                                            |
|          | 59.7±0.5ms           | 59.7±0.9ms          | 1.00    | trajectory.TrajectoryInterpolation.time_trajectory_nearest                                           |

Benchmarks that have got worse:

| Change   | Before [9c431a01]    | After [192955c8]    |   Ratio | Benchmark (Parameter)                                      |
|----------|----------------------|---------------------|---------|------------------------------------------------------------|
| +        | 253±2μs              | 365±6μs             |    1.44 | experimental.ugrid.Mesh.time_add_connectivities(6)         |
| +        | 303±3μs              | 404±10μs            |    1.33 | experimental.ugrid.Mesh.time_create(6)                     |
| +        | 294±10μs             | 397±7μs             |    1.35 | experimental.ugrid.MeshLazy.time_add_connectivities(6)     |
| +        | 338±10μs             | 449±10μs            |    1.33 | experimental.ugrid.MeshLazy.time_create(6)                 |
| +        | 288±5ms              | 357±4ms             |    1.24 | load.StructuredFF.time_structured_load((2, 2, 1000), True) |
```

</details>

Generated by GHA run [`8303701519`](https://github.com/SciTools/iris/actions/runs/8303701519)


Fix patch:
diff --git a/requirements/locks/py310-linux-64.lock b/requirements/locks/py310-linux-64.lock
index 3cbf8fb510..232ce295a7 100644
--- a/requirements/locks/py310-linux-64.lock
+++ b/requirements/locks/py310-linux-64.lock
@@ -18,7 +18,7 @@ https://conda.anaconda.org/conda-forge/linux-64/_openmp_mutex-4.5-2_gnu.tar.bz2#
 https://conda.anaconda.org/conda-forge/noarch/fonts-conda-ecosystem-1-0.tar.bz2#fee5683a3f04bd15cbd8318b096a27ab
 https://conda.anaconda.org/conda-forge/linux-64/libgcc-ng-13.2.0-h807b86a_5.conda#d4ff227c46917d3b4565302a2bbb276b
 https://conda.anaconda.org/conda-forge/linux-64/bzip2-1.0.8-hd590300_5.conda#69b8b6202a07720f448be700e300ccf4
-https://conda.anaconda.org/conda-forge/linux-64/c-ares-1.26.0-hd590300_0.conda#a86d90025198fd411845fc245ebc06c8
+https://conda.anaconda.org/conda-forge/linux-64/c-ares-1.27.0-hd590300_0.conda#f6afff0e9ee08d2f1b897881a4f38cdb
 https://conda.anaconda.org/conda-forge/linux-64/fribidi-1.0.10-h36c2ea0_0.tar.bz2#ac7bc6a654f8f41b352b38f4051135f8
 https://conda.anaconda.org/conda-forge/linux-64/geos-3.12.1-h59595ed_0.conda#8c0f4f71f5a59ceb0c6fa9f51501066d
 https://conda.anaconda.org/conda-forge/linux-64/gettext-0.21.1-h27087fc_0.tar.bz2#14947d8770185e5153fdd04d4673ed37
@@ -27,11 +27,11 @@ https://conda.anaconda.org/conda-forge/linux-64/graphite2-1.3.13-h58526e2_1001.t
 https://conda.anaconda.org/conda-forge/linux-64/icu-73.2-h59595ed_0.conda#cc47e1facc155f91abd89b11e48e72ff
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 https://conda.anaconda.org/conda-forge/linux-64/lerc-4.0.0-h27087fc_0.tar.bz2#76bbff344f0134279f225174e9064c8f
-https://conda.anaconda.org/conda-forge/linux-64/libaec-1.1.2-h59595ed_1.conda#127b0be54c1c90760d7fe02ea7a56426
+https://conda.anaconda.org/conda-forge/linux-64/libaec-1.1.3-h59595ed_0.conda#5e97e271911b8b2001a8b71860c32faa
 https://conda.anaconda.org/conda-forge/linux-64/libbrotlicommon-1.1.0-hd590300_1.conda#aec6c91c7371c26392a06708a73c70e5
 https://conda.anaconda.org/conda-forge/linux-64/libdeflate-1.19-hd590300_0.conda#1635570038840ee3f9c71d22aa5b8b6d
 https://conda.anaconda.org/conda-forge/linux-64/libev-4.33-hd590300_2.conda#172bf1cd1ff8629f2b1179945ed45055
-https://conda.anaconda.org/conda-forge/linux-64/libexpat-2.5.0-hcb278e6_1.conda#6305a3dd2752c76335295da4e581f2fd
+https://conda.anaconda.org/conda-forge/linux-64/libexpat-2.6.2-h59595ed_0.conda#e7ba12deb7020dd080c6c70e7b6f6a3d
 https://conda.anaconda.org/conda-forge/linux-64/libffi-3.4.2-h7f98852_5.tar.bz2#d645c6d2ac96843a2bfaccd2d62b3ac3
 https://conda.anaconda.org/conda-forge/linux-64/libgfortran5-13.2.0-ha4646dd_5.conda#7a6bd7a12a4bd359e2afe6c0fa1acace
 https://conda.anaconda.org/conda-forge/linux-64/libiconv-1.17-hd590300_2.conda#d66573916ffcf376178462f1b61c941e
@@ -43,8 +43,8 @@ https://conda.anaconda.org/conda-forge/linux-64/libwebp-base-1.3.2-hd590300_0.co
 https://conda.anaconda.org/conda-forge/linux-64/libxcrypt-4.4.36-hd590300_1.conda#5aa797f8787fe7a17d1b0821485b5adc
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 https://conda.anaconda.org/conda-forge/linux-64/lz4-c-1.9.4-hcb278e6_0.conda#318b08df404f9c9be5712aaa5a6f0bb0
-https://conda.anaconda.org/conda-forge/linux-64/ncurses-6.4-h59595ed_2.conda#7dbaa197d7ba6032caf7ae7f32c1efa0
-https://conda.anaconda.org/conda-forge/linux-64/openssl-3.2.1-hd590300_0.conda#51a753e64a3027bd7e23a189b1f6e91e
+https://conda.anaconda.org/conda-forge/linux-64/ncurses-6.4.20240210-h59595ed_0.conda#97da8860a0da5413c7c98a3b3838a645
+https://conda.anaconda.org/conda-forge/linux-64/openssl-3.2.1-hd590300_1.conda#9d731343cff6ee2e5a25c4a091bf8e2a
 https://conda.anaconda.org/conda-forge/linux-64/pixman-0.43.2-h59595ed_0.conda#71004cbf7924e19c02746ccde9fd7123
 https://conda.anaconda.org/conda-forge/linux-64/pthread-stubs-0.4-h36c2ea0_1001.tar.bz2#22dad4df6e8630e8dff2428f6f6a7036
 https://conda.anaconda.org/conda-forge/linux-64/snappy-1.1.10-h9fff704_0.conda#e6d228cd0bb74a51dd18f5bfce0b4115
@@ -58,21 +58,21 @@ https://conda.anaconda.org/conda-forge/linux-64/xorg-xproto-7.0.31-h7f98852_1007
 https://conda.anaconda.org/conda-forge/linux-64/xxhash-0.8.2-hd590300_0.conda#f08fb5c89edfc4aadee1c81d4cfb1fa1
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-https://conda.anaconda.org/conda-forge/linux-64/expat-2.5.0-hcb278e6_1.conda#8b9b5aca60558d02ddaa09d599e55920
+https://conda.anaconda.org/conda-forge/linux-64/expat-2.6.2-h59595ed_0.conda#53fb86322bdb89496d7579fe3f02fd61
 https://conda.anaconda.org/conda-forge/linux-64/hdf4-4.2.15-h2a13503_7.conda#bd77f8da987968ec3927990495dc22e4
 https://conda.anaconda.org/conda-forge/linux-64/libbrotlidec-1.1.0-hd590300_1.conda#f07002e225d7a60a694d42a7bf5ff53f
 https://conda.anaconda.org/conda-forge/linux-64/libbrotlienc-1.1.0-hd590300_1.conda#5fc11c6020d421960607d821310fcd4d
 https://conda.anaconda.org/conda-forge/linux-64/libedit-3.1.20191231-he28a2e2_2.tar.bz2#4d331e44109e3f0e19b4cb8f9b82f3e1
 https://conda.anaconda.org/conda-forge/linux-64/libgfortran-ng-13.2.0-h69a702a_5.conda#e73e9cfd1191783392131e6238bdb3e9
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-https://conda.anaconda.org/conda-forge/linux-64/libpng-1.6.42-h2797004_0.conda#d67729828dc6ff7ba44a61062ad79880
-https://conda.anaconda.org/conda-forge/linux-64/libsqlite-3.45.1-h2797004_0.conda#fc4ccadfbf6d4784de88c41704792562
+https://conda.anaconda.org/conda-forge/linux-64/libpng-1.6.43-h2797004_0.conda#009981dd9cfcaa4dbfa25ffaed86bcae
+https://conda.anaconda.org/conda-forge/linux-64/libsqlite-3.45.2-h2797004_0.conda#866983a220e27a80cb75e85cb30466a1
 https://conda.anaconda.org/conda-forge/linux-64/libssh2-1.11.0-h0841786_0.conda#1f5a58e686b13bcfde88b93f547d23fe
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 https://conda.anaconda.org/conda-forge/linux-64/libxcb-1.15-h0b41bf4_0.conda#33277193f5b92bad9fdd230eb700929c
-https://conda.anaconda.org/conda-forge/linux-64/libxml2-2.12.5-h232c23b_0.conda#c442ebfda7a475f5e78f1c8e45f1e919
+https://conda.anaconda.org/conda-forge/linux-64/libxml2-2.12.6-h232c23b_0.conda#d86653ff5ccb88bf7f13833fdd8789e0
 https://conda.anaconda.org/conda-forge/linux-64/libzip-1.10.1-h2629f0a_3.conda#ac79812548e7e8cf61f7b0abdef01d3b
-https://conda.anaconda.org/conda-forge/linux-64/pcre2-10.42-hcad00b1_0.conda#679c8961826aa4b50653bce17ee52abe
+https://conda.anaconda.org/conda-forge/linux-64/pcre2-10.43-hcad00b1_0.conda#8292dea9e022d9610a11fce5e0896ed8
 https://conda.anaconda.org/conda-forge/linux-64/readline-8.2-h8228510_1.conda#47d31b792659ce70f470b5c82fdfb7a4
 https://conda.anaconda.org/conda-forge/linux-64/tk-8.6.13-noxft_h4845f30_101.conda#d453b98d9c83e71da0741bb0ff4d76bc
 https://conda.anaconda.org/conda-forge/linux-64/xorg-libsm-1.2.4-h7391055_0.conda#93ee23f12bc2e684548181256edd2cf6
@@ -82,16 +82,15 @@ https://conda.anaconda.org/conda-forge/linux-64/blosc-1.21.5-h0f2a231_0.conda#00
 https://conda.anaconda.org/conda-forge/linux-64/brotli-bin-1.1.0-hd590300_1.conda#39f910d205726805a958da408ca194ba
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-https://conda.anaconda.org/conda-forge/linux-64/libglib-2.78.3-h783c2da_0.conda#9bd06b12bbfa6fd1740fd23af4b0f0c7
+https://conda.anaconda.org/conda-forge/linux-64/libglib-2.80.0-hf2295e7_1.conda#0725f6081030c29b109088639824ff90
 https://conda.anaconda.org/conda-forge/linux-64/libopenblas-0.3.26-pthreads_h413a1c8_0.conda#760ae35415f5ba8b15d09df5afe8b23a
 https://conda.anaconda.org/conda-forge/linux-64/libtiff-4.6.0-ha9c0a0a_2.conda#55ed21669b2015f77c180feb1dd41930
-https://conda.anaconda.org/conda-forge/linux-64/python-3.10.13-hd12c33a_1_cpython.conda#ed38140af93f81319ebc472fbcf16cca
-https://conda.anaconda.org/conda-forge/linux-64/sqlite-3.45.1-h2c6b66d_0.conda#93acf31b379acebada263b9bce3dc6ed
+https://conda.anaconda.org/conda-forge/linux-64/python-3.10.14-hd12c33a_0_cpython.conda#2b4ba962994e8bd4be9ff5b64b75aff2
+https://conda.anaconda.org/conda-forge/linux-64/sqlite-3.45.2-h2c6b66d_0.conda#1423efca06ed343c1da0fc429bae0779
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 https://conda.anaconda.org/conda-forge/noarch/antlr-python-runtime-4.11.1-pyhd8ed1ab_0.tar.bz2#15109c4977d39ad7aa3423f57243e286
-https://conda.anaconda.org/conda-forge/noarch/asv_runner-0.1.0-pyhd8ed1ab_0.conda#0e8715bef534217eae333c53f645c9ed
 https://conda.anaconda.org/conda-forge/linux-64/atk-1.0-2.38.0-hd4edc92_1.tar.bz2#6c72ec3e660a51736913ef6ea68c454b
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@@ -102,15 +101,15 @@ https://conda.anaconda.org/conda-forge/noarch/click-8.1.7-unix_pyh707e725_0.cond
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-https://conda.anaconda.org/conda-forge/linux-64/cython-3.0.8-py310hc6cd4ac_0.conda#e533f96945907b2e81c6b604f578b69c
+https://conda.anaconda.org/conda-forge/linux-64/cython-3.0.9-py310hc6cd4ac_0.conda#987a8359726157c7a7cdd198f882f82d
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-https://conda.anaconda.org/conda-forge/noarch/fsspec-2024.2.0-pyhca7485f_0.conda#fad86b90138cf5d82c6f5a2ed6e683d9
-https://conda.anaconda.org/conda-forge/linux-64/gdk-pixbuf-2.42.10-h829c605_4.conda#252a696860674caf7a855e16f680d63a
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diff --git a/requirements/locks/py311-linux-64.lock b/requirements/locks/py311-linux-64.lock
index 053251b045..5022fca283 100644
--- a/requirements/locks/py311-linux-64.lock
+++ b/requirements/locks/py311-linux-64.lock
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diff --git a/requirements/locks/py39-linux-64.lock b/requirements/locks/py39-linux-64.lock
index f68198c664..80a0b2dd69 100644
--- a/requirements/locks/py39-linux-64.lock
+++ b/requirements/locks/py39-linux-64.lock
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@@ -175,46 +174,47 @@ https://conda.anaconda.org/conda-forge/noarch/partd-1.4.1-pyhd8ed1ab_0.conda#acf
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-https://conda.anaconda.org/conda-forge/noarch/virtualenv-20.25.0-pyhd8ed1ab_0.conda#c119653cba436d8183c27bf6d190e587
+https://conda.anaconda.org/conda-forge/noarch/pytest-8.1.1-pyhd8ed1ab_0.conda#94ff09cdedcb7b17e9cd5097ee2cfcff
+https://conda.anaconda.org/conda-forge/noarch/python-dateutil-2.9.0-pyhd8ed1ab_0.conda#2cf4264fffb9e6eff6031c5b6884d61c
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Test patch:
diff --git a/docs/src/whatsnew/latest.rst b/docs/src/whatsnew/latest.rst
index 9150568316..f59f623c6a 100644
--- a/docs/src/whatsnew/latest.rst
+++ b/docs/src/whatsnew/latest.rst
@@ -24,7 +24,10 @@ This document explains the changes made to Iris for this release
 📢 Announcements
 ================
 
-#. N/A
+#. ⏱️ Performance benchmarking has shown that loading
+   :term:`Fields File (FF) Format` with a large number of fields via
+   :func:`iris.fileformats.um.structured_um_loading` has become ~30% slower
+   since `Dask version 2024.2.1`_.
 
 
 ✨ Features
@@ -101,4 +104,5 @@ This document explains the changes made to Iris for this release
 
 .. _Pull Request Labeler GitHub action: https://github.com/actions/labeler
 .. _NPY002: https://docs.astral.sh/ruff/rules/numpy-legacy-random/
-.. _numpydoc validation: https://numpydoc.readthedocs.io/en/latest/validation.html#
\ No newline at end of file
+.. _numpydoc validation: https://numpydoc.readthedocs.io/en/latest/validation.html#
+.. _Dask version 2024.2.1: https://docs.dask.org/en/stable/changelog.html#v2024-2-1
\ No newline at end of file