Memory usage of Fuse pod sometimes fluctuates.

Solution Unverified - Updated -

Issue

I am using a Fuse container image on OpenShift.
As far as I observe the metrics of container.memory.usage, there is a difference in memory usage of the pods started from the same container image. One is stable at around 700MB but another is constantly fluctuating between 300MB and 700MB in memory usage even though the load on each pod is similar. Why is there such a difference seen?

Environment

  • Red Hat Fuse 7.x
  • Red Hat OpenShift Container Platform 4.x
  • OpenJDK 8
  • OpenJDK 11

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