Mark Shannon <m...@hotpy.org> added the comment: I'm not bothered by the regression in "silent_logging", as it is a micro benchmark with a very short running time.
The regression in "mako" is, I think, caused by competition for the data cache between the new dict implementation and the method-cache used by _PyType_Lookup. Although the new-dict uses less memory overall, the size of a single split-table dict (keys + value) is larger than a combined table. Reducing the method-cache size from 2**10 to 2**9 allows the working set to fit better in the cache. This fixes the regression in "mako", but makes OO programs that use few objects (such as richards) a bit slower. Compared with tip, the new-dict implementation is 4% slower, using 7% less memory for mako. 6% slower, using 5% less memory for richards. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue13903> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
