Why is my x86_64 system swapping heavily and killing processes due to lack of memory when there appears to be more than enough memory?

Solution Unverified - Updated -

Issue

  • Why is my x86_64 system swapping heavily and killing processes due to lack of memory when there appears to be more than enough memory?

Environment

  • Red Hat Enterprise Linux (RHEL)
  • x86_64 system with NUMA enabled

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