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  • It doesn't work in practice. Actually command stress -c 16 invokes 16 processes. They are invoked by the parent stress process whose pid we get as you have mentioned. When I kill that pid, then others do not get killed and their ownership goes to its parent process. Commented Mar 31, 2017 at 13:51
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    Then in that case you need to gather the pids of those 16 childs as well. You didnt state that in your query initially. pstree "$pid" -p -a -l > x; kill -9 $(cut -d, -f2 x | cut -d' ' -f1) Commented Apr 1, 2017 at 16:34
  • Of course, I didn't state that because I was assuming that you knew how stress work. Thanks a lot for your answer. It really solves my original problem. I made some minor changes in your command to avoid any file operation: pstree $pid_stress -p -a -l | cut -d, -f2 | cut -d' ' -f1 | xargs kill -9 Commented Apr 3, 2017 at 13:35
  • Meanwhile, I was trying the following in python: os.setpgrp() # create group before stress invocation ./runme os.killpg(0, signal.SIGKILL) # kill all processes in my group This has worked for me. But I will prefer your way. Commented Apr 3, 2017 at 13:37