Barry A. Warsaw <ba...@python.org> added the comment: I'm reopening this bug even though it's been long closed and even though the attached patch is no longer relevant.
We recently found a degenerative performance problem with entrypoints and threads. As the number of threads increases, it becomes increasingly horrible to extract entrypoints. https://github.com/takluyver/entrypoints The problem is that entrypoints uses glob.iglob() to find the .{dist,egg}-info directory. iglob() uses regexps on a fairly simple pattern. GIL contention can cause entrypoint discovery with 16 threads to take ~10 seconds for all threads to complete. We have some test cases that I'll try to attach later, but since my bugs archeology found this bug, I decided to reopen it rather than start with a new bug. ---------- assignee: effbot -> components: +Extension Modules -None keywords: -patch nosy: +barry resolution: rejected -> status: closed -> open title: SRE engine do not release the GIL -> SRE engine should release the GIL when/if possible versions: +Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue1366311> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
