pydata/pandas — pull request #2335 by y-p (2012-11-23 12:20:14+00:00)
Title: VB: add test for iteritems performance

catch the regression noted in #2273 next time.
```
frame_iteritems 24.85 3.12 7.98

Columns: test_name | head_time [ms] | baseline_time [ms] | ratio

- a Ratio of 1.30 means HEAD is 30% slower then the Baseline.

Head [59d318c] : revert
Baseline [bdbca8e] : BUG: fix borked data-copying iteritems performance affecting DataFrame and SparseDataFrame. close #2273