New submission from STINNER Victor: The changeset 223731925d06 of the issue issue #28082 "use IntFlag for re constants" made Python startup 34% slower:
- rev 5637c9b4dd4c: Median +- std dev: 19.5 ms +- 0.0 ms - rev 223731925d06: Median +- std dev: 26.2 ms +- 0.0 ms The change adds "import enum" in Lib/re.py, so the enum module is imported, whereas it wasn't before. It seems like importing enum takes 6.7 ms. I propose to revert the change 223731925d06 in Python 3.6 and reopen the issue #28082 to try to find another solution for the re module which doesn't impact Python startup performance. ---------- messages: 280256 nosy: ethan.furman, haypo priority: normal severity: normal status: open title: Python startup performance regression type: performance versions: Python 3.6, Python 3.7 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue28637> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
