CPU Throttling even when the container does not reach its CPU Limit.

Solution Verified - Updated -

Issue

  • Pods running with CPU limits CPU throttling despite the CPU limit is not hit.
  • The default Grafana dashboard shows CPU throttling even though CPU usage does not touch its limit.
  • We could see CPU throttling even though we are running an updated kernel as mentioned in the Red Hat Knowledge Base 5285071

Environment

  • Red Hat OpenShift Container Platform 3
  • Red Hat OpenShift Container Platform 4
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

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