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classification
Title: Warning about "Unknown child process pid" in test_asyncio
Type: behavior Stage:
Components: asyncio, Tests Versions: Python 3.11, Python 3.10, Python 3.9
process
Status: open Resolution:
Dependencies: Superseder:
Assigned To: Nosy List: asvetlov, rmast, serhiy.storchaka, yselivanov
Priority: normal Keywords:

Created on 2021-08-22 08:16 by serhiy.storchaka, last changed 2022-04-11 14:59 by admin.

Messages (2)
msg400057 - (view) Author: Serhiy Storchaka (serhiy.storchaka) * (Python committer) Date: 2021-08-22 08:16 
Ryan Mast reported about a warning about "Unknown child process pid" after finishing test_asyncio (see msg400018 and https://github.com/python/cpython/pull/27870#issuecomment-903072119 for details).

I cannot reproduce it locally. Ryan, could you help with locating the source of this warning? First suspect is test_close_dont_kill_finished. If it is not, it may be other test calling kill().
msg400395 - (view) Author: Ryan Mast (nightlark) (rmast) * Date: 2021-08-27 04:40 
I haven't gotten a chance to narrow it down much yet, it might be that it is occurs more often on systems with a low core count/higher load -- a bit hard to tell with it being intermittent though.
History
Date User Action Args
2022-04-11 14:59:49adminsetgithub: 89137
2021-08-27 04:40:58rmastsetmessages: + msg400395
2021-08-22 08:16:21serhiy.storchakacreate