[issue36051] Drop the GIL during large bytes.join operations?

[Bruce Merry]

Bruce Merry <bmerry at gmail.com> added the comment:

I ran the test on a Xeon machine (Skylake-XP) and it also looks like performance is only improved from 1MB up (somewhat to my surprise, given how poor single-threaded memcpy performance is on that machine). So I've updated the pull request with that threshold.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36051>
_______________________________________