Yury Selivanov added the comment: Alright, I ran a few benchmarks myself. In rigorous mode regex_v8 has the same performance on my 2013 Macbook Pro and an 8-years old i7 CPU (Linux).
Here're results of "perf.py -b raytrace,spectral_norm,meteor_contest,nbody ../cpython/python.exe ../cpython-git/python.exe -r" fastint5: ### nbody ### Min: 0.227683 -> 0.197046: 1.16x faster Avg: 0.229366 -> 0.198889: 1.15x faster Significant (t=137.31) Stddev: 0.00170 -> 0.00142: 1.1977x smaller ### spectral_norm ### Min: 0.296840 -> 0.262279: 1.13x faster Avg: 0.299616 -> 0.265387: 1.13x faster Significant (t=74.52) Stddev: 0.00331 -> 0.00319: 1.0382x smaller The following not significant results are hidden, use -v to show them: meteor_contest, raytrace. ====== inline-2: ### raytrace ### Min: 1.188825 -> 1.213788: 1.02x slower Avg: 1.199827 -> 1.227276: 1.02x slower Significant (t=-18.12) Stddev: 0.00559 -> 0.01408: 2.5184x larger ### spectral_norm ### Min: 0.296535 -> 0.277025: 1.07x faster Avg: 0.299044 -> 0.278071: 1.08x faster Significant (t=87.40) Stddev: 0.00220 -> 0.00097: 2.2684x smaller The following not significant results are hidden, use -v to show them: meteor_contest, nbody. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue21955> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com