[Python-Dev] Possible performance regression

[Eric Snow]

On Mon, Feb 25, 2019 at 10:32 AM Raymond Hettinger
<raymond.hettinger at gmail.com> wrote:
> I got it down to two checkins before running out of time:
>
> Between
>     git checkout 463572c8beb59fd9d6850440af48a5c5f4c0c0c9
>
> And:
>     git checkout 3b0abb019662e42070f1d6f7e74440afb1808f03
>
> So the subinterpreter patch was likely the trigger.
>
> I can reproduce it over and over again on Clang, but not for a GCC-8 build, so it is compiler specific (and possibly macOS specific).
>
> Will look at it more after work this evening.  I posted here to try to solicit independent confirmation.

I'll look into it around then too.  See https://bugs.python.org/issue33608.

-eric