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linuxubuntusystemdcgroups

Change cgroup pid.max value?

I am currently tracing cannot fork() errors on my Ubuntu Server and I was able to pinpoint it to the pid.max value of 700 under /sys/fs/cgroup/pids/. However, I can only able to set the values /system.slice/pids.max and /user.slice/pids.max - not pids.max. Plus, these reset after reboot to the value max which again enforces the global pids.max value.

Is it possible to simply change the it from 700 to something higher? root + sudo were of no help.

Is there another way to override this value?

Solution

  • After a long back and forth with my server hoster, they finally spilled the beans.

    I was renting a V-Server with very beefy hardware for very little money. The catch? You can only run 700 concurrent tasks. That's where the pids.max value came from and overruled the TasksMax and numprocs values.