Opened 3 years ago

Closed 2 years ago

#8332 closed defect (needs_more_info)

ffmpeg becomes zombie process

Reported by: chrisbgp Owned by:
Priority: normal Component: undetermined
Version: git-master Keywords: regression
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no


Summary of the bug:
To limit the cpu usage of ffmpeg I have used the following command in the past:
while true ; do pkill -STOP ffmpeg && sleep 0.1 && pkill -CONT ffmpeg && sleep 0.1 ; done
This does not seem to work anymore, ffmpeg turns into a zombie process after a little while. -loglevel debug does not show anything. I have tried the latest git snapshot as well.

How to reproduce:

% ffmpeg version N-95534-gac0f5f4c17 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple LLVM version 10.0.1 (clang-1001.0.46.4)
  configuration: --enable-libx264 --enable-libx265 --enable-nonfree --enable-gpl

shell #1:
for i in *.MP4 ; do ffmpeg -loglevel debug -i $i -f null - ; done
shell #2:
while true ; do pkill -STOP ffmpeg && sleep 0.1 && pkill -CONT ffmpeg && sleep 0.1 ; done

Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.

Change History (2)

comment:1 by Carl Eugen Hoyos, 3 years ago

Keywords: regression added

Please use git bisect to find the change introducing the regression you see.

comment:2 by Carl Eugen Hoyos, 2 years ago

Resolution: needs_more_info
Status: newclosed
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