Systemd is using multiple gigabytes of memory with a large number of mounts

Solution Verified - Updated -

Issue

  • We are seeing systemd consume multiple gigabytes of memory
  • We are seeing high load on our server
  • Pods are taking a long time to start
  • We have a large number of mounts (over 1000) in /proc/1/mountinfo on our server
  • We have a large number of containers running with emptyDir, pvcs, secrets, volumes and configmaps

Environment

  • Red Hat Enterprise Linux (RHEL)
    • 7
  • OpenShift Container Platform (OCP)
    • 3

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