Matthias Troffaes <matthias.troff...@gmail.com> added the comment: I'm also attaching a test script to check the effect of the two patches on gc.collect(). If many objects are allocated, space savings appear to be relevant.
Before applying the patch (debug build on linux 64 bit): Memory used (begin): 121Mb memtest 2000000 int ==================== Memory used (peak): 297Mb Memory used (end): 122Mb Unfreed memory: 1Mb memtest 2000000 str ==================== Memory used (peak): 455Mb Memory used (end): 123Mb Unfreed memory: 2Mb memtest 2000000 float ==================== Memory used (peak): 236Mb Memory used (end): 127Mb Unfreed memory: 6Mb memtest 2000000 int ==================== Memory used (peak): 313Mb Memory used (end): 123Mb Unfreed memory: 2Mb memtest 2000000 Test ==================== Memory used (peak): 372Mb Memory used (end): 123Mb Unfreed memory: 2Mb memtest 2000000 Test2 ==================== Memory used (peak): 361Mb Memory used (end): 123Mb Unfreed memory: 2Mb memtest 2000000 _tuple ==================== Memory used (peak): 529Mb Memory used (end): 123Mb Unfreed memory: 2Mb memtest 2000000 _set ==================== Memory used (peak): 846Mb Memory used (end): 765Mb Unfreed memory: 644Mb memtest 2000000 _dict ==================== Memory used (peak): 1241Mb Memory used (end): 1241Mb Unfreed memory: 1120Mb memtest 2000000 Test3 ==================== Memory used (peak): 1241Mb Memory used (end): 765Mb Unfreed memory: 644Mb [40720 refs] After applying the patch (same build system): Memory used (begin): 121Mb memtest 2000000 int ==================== Memory used (peak): 298Mb Memory used (end): 121Mb Unfreed memory: 0Mb memtest 2000000 str ==================== Memory used (peak): 455Mb Memory used (end): 123Mb Unfreed memory: 2Mb memtest 2000000 float ==================== Memory used (peak): 236Mb Memory used (end): 127Mb Unfreed memory: 6Mb memtest 2000000 int ==================== Memory used (peak): 312Mb Memory used (end): 123Mb Unfreed memory: 2Mb memtest 2000000 Test ==================== Memory used (peak): 374Mb Memory used (end): 123Mb Unfreed memory: 2Mb memtest 2000000 Test2 ==================== Memory used (peak): 361Mb Memory used (end): 123Mb Unfreed memory: 2Mb memtest 2000000 _tuple ==================== Memory used (peak): 528Mb Memory used (end): 123Mb Unfreed memory: 2Mb memtest 2000000 _set ==================== Memory used (peak): 846Mb Memory used (end): 123Mb Unfreed memory: 2Mb memtest 2000000 _dict ==================== Memory used (peak): 1240Mb Memory used (end): 123Mb Unfreed memory: 2Mb memtest 2000000 Test3 ==================== Memory used (peak): 999Mb Memory used (end): 123Mb Unfreed memory: 2Mb [40740 refs] ---------- Added file: http://bugs.python.org/file14710/py3k-freelist_test.py _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue6695> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com