Rita, the CMS Pipelines Execution Profiler Rita, the CMS Pipelines Execution Profiler Rita reports on the CPU utilization of a pipeline complex by stage and pipeline specification. With a current enough version of Pipes , Rita also reports the highwatermark value of the virtual memory used by each stage for workareas and buffers.
Detailed output is written to a disk file, and a summary is displayed on the console.
The filetype is of the form RITAnnn, where nnn is the first unused sequence number. For a more detailed discussion and many examples of using Rita to tune pipelines, see Streamlining Your Pipelines . If a user-written pipeline stage goes into a wait state outside of the control of Pipes , the wait time will be counted as CPU time. Rita is much less expensive to use if RITA REXX has been compiled.