Martin <gzl...@googlemail.com> added the comment: > Has anyone had a chance to try this patch on Windows? Martin? I'm > hoping that it doesn't impose a startup cost in the default > no-randomization cost, and that any startup cost in the -R case is > acceptable.
Just tested as requested. Is the patch against 3.1 for a reason? Can't really be compared to earlier results, but get enough weird outliers that that may not be useful anyway. Also needed the following change: -+ chunk = Py_MIN(size, INT_MAX); ++ chunk = size > INT_MAX ? INT_MAX : size; Summary, looks like extra work in the default case is avoided and isn't crippling otherwise, though there were a couple of very odd runs not presented probably due to other disk access. Vanilla: >timeit PCbuild\python.exe -c "import sys;print(sys.version)" 3.1.4+ (default, Jan 30 2012, 22:38:52) [MSC v.1500 32 bit (Intel)] Version Number: Windows NT 5.1 (Build 2600) Exit Time: 10:42 pm, Monday, January 30 2012 Elapsed Time: 0:00:00.218 Process Time: 0:00:00.187 System Calls: 3974 Context Switches: 574 Page Faults: 1696 Bytes Read: 480331 Bytes Written: 0 Bytes Other: 190860 Patched: >timeit PCbuild\python.exe -c "import sys;print(sys.version)" 3.1.4+ (default, Jan 30 2012, 22:55:06) [MSC v.1500 32 bit (Intel)] Version Number: Windows NT 5.1 (Build 2600) Exit Time: 10:55 pm, Monday, January 30 2012 Elapsed Time: 0:00:00.218 Process Time: 0:00:00.187 System Calls: 3560 Context Switches: 441 Page Faults: 1660 Bytes Read: 461956 Bytes Written: 0 Bytes Other: 24926 >timeit PCbuild\python.exe -Rc "import sys;print(sys.version)" 3.1.4+ (default, Jan 30 2012, 22:55:06) [MSC v.1500 32 bit (Intel)] Version Number: Windows NT 5.1 (Build 2600) Exit Time: 11:05 pm, Monday, January 30 2012 Elapsed Time: 0:00:00.249 Process Time: 0:00:00.234 System Calls: 3959 Context Switches: 483 Page Faults: 1847 Bytes Read: 892464 Bytes Written: 0 Bytes Other: 27090 ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue13703> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
