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PERF: performance improvements in multi-key groupby #9429

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merged 1 commit into from
Feb 7, 2015
Merged

PERF: performance improvements in multi-key groupby #9429

merged 1 commit into from
Feb 7, 2015

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behzadnouri
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-------------------------------------------------------------------------------
Test name                                    | head[ms] | base[ms] |  ratio   |
-------------------------------------------------------------------------------
groupby_multi_index                          | 1008.6970 | 1861.1110 |   0.5420 |
-------------------------------------------------------------------------------
Test name                                    | head[ms] | base[ms] |  ratio   |
-------------------------------------------------------------------------------

Ratio < 1.0 means the target commit is faster then the baseline.
Seed used: 1234

Target [907e1b7] : performance improvements in multi-key groupby
Base   [5dc8009] : Merge pull request #9418 from sinhrks/rn_20150205

DOC: Fix release note format

@jreback jreback added Groupby Performance Memory or execution speed performance labels Feb 6, 2015
@jreback jreback added this to the 0.16.0 milestone Feb 6, 2015
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jreback commented Feb 6, 2015

pls add a release note in perf section, otherwise looks good.

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@jreback added the release note

jreback added a commit that referenced this pull request Feb 7, 2015
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Merge pull request #9429 from behzadnouri/grby-mi
43c1007 
PERF: performance improvements in multi-key groupby
@jreback jreback merged commit 43c1007 into pandas-dev:master Feb 7, 2015
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jreback commented Feb 7, 2015

thanks!

we should prob rerun these benchmarks to see how much better things are now

https://github.com/Rdatatable/data.table/wiki/Benchmarks-%3A-Grouping

@behzadnouri behzadnouri deleted the grby-mi branch February 7, 2015 13:05
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