Stefan Behnel added the comment: I got similar results on 64bits for my original patch (very similar to what Serhiy used now). The numbers are not really conclusive.
Report on Linux leppy 3.13.0-46-generic #77-Ubuntu SMP Mon Mar 2 18:23:39 UTC 2015 x86_64 x86_64 Total CPU cores: 4 ### 2to3 ### 6.885334 -> 6.829016: 1.01x faster ### etree_process ### Min: 0.249504 -> 0.253876: 1.02x slower Med: 0.252730 -> 0.258274: 1.02x slower Avg: 0.254332 -> 0.261100: 1.03x slower Significant (t=-5.99) Stddev: 0.00478 -> 0.00640: 1.3391x larger ### fastpickle ### Min: 0.402085 -> 0.416765: 1.04x slower Med: 0.405595 -> 0.424729: 1.05x slower Avg: 0.405882 -> 0.429707: 1.06x slower Significant (t=-12.45) Stddev: 0.00228 -> 0.01334: 5.8585x larger ### json_dump_v2 ### Min: 2.611031 -> 2.522507: 1.04x faster Med: 2.678369 -> 2.544085: 1.05x faster Avg: 2.706089 -> 2.552111: 1.06x faster Significant (t=10.40) Stddev: 0.09551 -> 0.04290: 2.2265x smaller ### nbody ### Min: 0.217901 -> 0.214968: 1.01x faster Med: 0.224340 -> 0.216781: 1.03x faster Avg: 0.226012 -> 0.216981: 1.04x faster Significant (t=6.03) Stddev: 0.01049 -> 0.00142: 7.4102x smaller ### regex_v8 ### Min: 0.040856 -> 0.039377: 1.04x faster Med: 0.041847 -> 0.040082: 1.04x faster Avg: 0.042468 -> 0.040726: 1.04x faster Significant (t=3.20) Stddev: 0.00291 -> 0.00252: 1.1549x smaller The following not significant results are hidden, use -v to show them: etree_generate, etree_iterparse, etree_parse, fastunpickle, json_load. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue24165> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com