Inada Naoki <songofaca...@gmail.com> added the comment:
Benchmark result is here. https://github.com/methane/sandbox/tree/master/2019.01/empty-dict notes: * Overhead introduced by PR 1080 (https://bugs.python.org/issue30040#msg337778) is cancelled by first insert optimization. It is now faster than before. * PR 12307 (first insert optimization) is about 2x faster on creating & destroy empty dict. Other performance diff is small. * PR 12308 (use keys=NULL instead of shared empty keys) is more faster than PR 12307 on some cases, while it requires much `if (md->ma_keys == NULL)` checks. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue30040> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
