STINNER Victor added the comment: FYI benchmark result to compare Python with and without pymalloc (fast memory allocator for block <= 512 bytes). As expected, no pymalloc is slower, up to 30% slower (and it's never faster).
Report on Linux smithers 4.3.3-300.fc23.x86_64 #1 SMP Tue Jan 5 23:31:01 UTC 2016 x86_64 x86_64 Total CPU cores: 8 ### 2to3 ### 7.253671 -> 7.558993: 1.04x slower ### chameleon_v2 ### Min: 5.598481 -> 5.794526: 1.04x slower Avg: 5.714233 -> 5.922142: 1.04x slower Significant (t=-8.01) Stddev: 0.15956 -> 0.09048: 1.7636x smaller ### django_v3 ### Min: 0.574221 -> 0.606462: 1.06x slower Avg: 0.579659 -> 0.612088: 1.06x slower Significant (t=-28.44) Stddev: 0.00605 -> 0.00532: 1.1371x smaller ### fastpickle ### Min: 0.450852 -> 0.502645: 1.11x slower Avg: 0.455619 -> 0.513777: 1.13x slower Significant (t=-26.24) Stddev: 0.00696 -> 0.01404: 2.0189x larger ### fastunpickle ### Min: 0.544064 -> 0.696306: 1.28x slower Avg: 0.552459 -> 0.705372: 1.28x slower Significant (t=-85.52) Stddev: 0.00798 -> 0.00980: 1.2281x larger ### json_dump_v2 ### Min: 2.780312 -> 3.265531: 1.17x slower Avg: 2.830463 -> 3.370060: 1.19x slower Significant (t=-23.73) Stddev: 0.04190 -> 0.15521: 3.7046x larger ### json_load ### Min: 0.428893 -> 0.558956: 1.30x slower Avg: 0.431941 -> 0.569441: 1.32x slower Significant (t=-74.76) Stddev: 0.00791 -> 0.01033: 1.3060x larger ### regex_v8 ### Min: 0.043439 -> 0.044614: 1.03x slower Avg: 0.044388 -> 0.046487: 1.05x slower Significant (t=-4.95) Stddev: 0.00215 -> 0.00209: 1.0283x smaller ### tornado_http ### Min: 0.264603 -> 0.278840: 1.05x slower Avg: 0.270153 -> 0.285263: 1.06x slower Significant (t=-23.04) Stddev: 0.00489 -> 0.00436: 1.1216x smaller The following not significant results are hidden, use -v to show them: nbody. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue26249> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
