Patches item #1700288, was opened at 2007-04-13 12:16 Message generated for change (Comment added) made by nnorwitz You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=305470&aid=1700288&group_id=5470
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Performance Group: Python 2.6 Status: Open Resolution: None Priority: 5 Private: No Submitted By: Kevin Jacobs (bioinformed) Assigned to: Raymond Hettinger (rhettinger) Summary: Armin's method cache optimization updated for Python 2.6 Initial Comment: I've forward ported and slightly cleaned up Armin's method cache patch (see #1685986). I've attempted to clarify and tighten up several loose ends in the code, so hopefully I haven't mucked anything up. My performance results are not quite as good as Armin's, though still very encouraging. I see a typical speed up of 10%, with heavily object oriented application code seeing speedups of 15-20%. Given these rather significant results, the major task is to verify correctness. ---------------------------------------------------------------------- >Comment By: Neal Norwitz (nnorwitz) Date: 2007-04-13 23:21 Message: Logged In: YES user_id=33168 Originator: NO I tried this test on parrotbench (b0.py in particular) and I'm not sure I could distinguish an improvement over the noise (best case was about 5%). The variability is pretty high on my box (dual amd64 opertons, ubuntu gcc 4.1.2-ish). At first it seemed a bit slower with the original patch which uses unsigned ints. I tried changing to unsigned longs. It seemed a little better, though not sure if it was really due to the change. I think unsigned longs should be used for 64-bit boxes. Did you use a benchmark/program that is open source? I don't know that I have anything decent to test this with. Raymond probably does though. Also what platform did you test on? ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=305470&aid=1700288&group_id=5470 _______________________________________________ Patches mailing list [EMAIL PROTECTED] http://mail.python.org/mailman/listinfo/patches
