Stefan Behnel added the comment: Comparing against CPython master as of 122e88a8354e3f75aeaf6211232dac88ac296d54
I rebuilt my CPython to get clean results, and that still gave me almost 15% overall speedup. Original: $ ./python -m timeit 'class Test: pass' 20000 loops, best of 5: 9.55 usec per loop Patched: $ ./python -m timeit 'class Test: pass' 50000 loops, best of 5: 8.27 usec per loop I came across this when benchmarking the class creation in Cython, which seemed slow, and after a couple of tweaks, I ended up with 97% of the runtime inside of CPython, so I took a look over the fence. According to callgrind, the original version spent over 125M instructions inside of _PyType_Lookup() for the timeit run, whereas the patched version only counts about 92M, that's about 25% less. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue31336> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
