Gregory P. Smith added the comment: I'm reopening this and assigning it to benjamin as the 2.7 release manager. This change is valuable to apply to 2.7.x as well. It is very simple and is a clear performance improvement for realistic workloads. No API change.
When you profile Python 2.7 applications today, the _PyType_Lookup function shows up in the ~3% of all CPU cycles range. This reduces that for a small memory tradeoff. We're raising our cache exponent to be even larger than the 12 in this patch at work as we've got some huge applications. Regardless, 12 is a much better default than the existing 9. ---------- assignee: -> benjamin.peterson nosy: +benjamin.peterson, gregory.p.smith resolution: fixed -> status: closed -> open versions: +Python 2.7 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue22847> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
