pydata/pandas — pull request #9125 by behzadnouri (2014-12-21 23:47:56+00:00)
Title: PERF: use labels to find duplicates in multi-index

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Test name | head[ms] | base[ms] | ratio |
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multiindex_duplicated | 139.2883 | 469.6666 | 0.2966 |
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Test name | head[ms] | base[ms] | ratio |
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Ratio < 1.0 means the target commit is faster then the baseline.
Seed used: 1234

Target [2b99b80] : use labels to identify duplicates in multi-index
Base [0fe43a6] : Merge pull request #9120 from minrk/nbviewer-link

fix an nbviewer link in tutorials