[Python-Dev] Have a big machine and spare time? Here's a possible Python bug.

Inada Naoki songofacandy at gmail.com
Thu May 23 08:42:38 EDT 2019

1. perf shows 95% of CPU time is eaten by _PyObject_Free, not kernel space.
2. This loop is cleary hot:

I can attach the process by gdb and I confirmed many arenas have
same nfreepools.

I believe this is not jitter caused from NUMA or something else in cloud.
Inada Naoki  <songofacandy at gmail.com>

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