Understanding the new control groups API

Posted Nov 22, 2018 21:29 UTC (Thu) by arekm (subscriber, #4846)
Parent article: Understanding the new control groups API

PID controller is weird. Example:

# pwd
/sys/fs/cgroup/somegroup
# grep "" pids.*
pids.current:110
pids.events:max 0
pids.max:60

You can have much more processes in cgroup than pids.max says. And that's done with migrating processes to somegroup cgroup. With migration limits don't apply.

Migrations are the only way to assign cgroup to, for example, httpd subprocesses.

I think that should be considered a bug.