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Groups > comp.lang.python > #51418
| From | Serhiy Storchaka <storchaka@gmail.com> |
|---|---|
| Subject | Re: collections.Counter surprisingly slow |
| Date | 2013-07-29 09:25 +0300 |
| References | <roy-8C60F5.15590428072013@news.panix.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.5210.1375079167.3114.python-list@python.org> (permalink) |
28.07.13 22:59, Roy Smith написав(ла): > The input is an 8.8 Mbyte file containing about 570,000 lines (11,000 > unique strings). Repeat you tests with totally unique lines. > The full profiler dump is at the end of this message, but the gist of > it is: Profiler affects execution time. In particular it slowdown Counter implementation which uses more function calls. For real world measurement use different approach. > Why is count() [i.e. collections.Counter] so slow? Feel free to contribute a patch which fixes this "wart". Note that Counter shouldn't be slowdowned on mostly unique data.
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collections.Counter surprisingly slow Roy Smith <roy@panix.com> - 2013-07-28 15:59 -0400
Re: collections.Counter surprisingly slow Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-28 20:51 +0000
Re: collections.Counter surprisingly slow Roy Smith <roy@panix.com> - 2013-07-28 17:57 -0400
Re: collections.Counter surprisingly slow Stefan Behnel <stefan_ml@behnel.de> - 2013-07-29 13:46 +0200
Re: collections.Counter surprisingly slow Joshua Landau <joshua@landau.ws> - 2013-07-29 13:07 +0100
Re: collections.Counter surprisingly slow Serhiy Storchaka <storchaka@gmail.com> - 2013-07-29 09:25 +0300
Re: collections.Counter surprisingly slow Joshua Landau <joshua@landau.ws> - 2013-07-29 12:49 +0100
Re: collections.Counter surprisingly slow Ian Kelly <ian.g.kelly@gmail.com> - 2013-07-29 11:19 -0600
Re: collections.Counter surprisingly slow Serhiy Storchaka <storchaka@gmail.com> - 2013-07-29 22:37 +0300
Re: collections.Counter surprisingly slow Stefan Behnel <stefan_ml@behnel.de> - 2013-07-30 08:39 +0200
Re: collections.Counter surprisingly slow Stefan Behnel <stefan_ml@behnel.de> - 2013-07-30 08:51 +0200
Re: collections.Counter surprisingly slow Serhiy Storchaka <storchaka@gmail.com> - 2013-07-30 16:04 +0300
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