vhost threads are not pinned on RHEL9 based KVM hypervisors, causing performance issues

Solution Verified - Updated -

Issue

  • KVM vhost processed are not pinned to the CPUs as configured in emulatorpin.
  • After upgrading to RHEL9, Virtual Machines that require pinning have intermittent performance issues.

Environment

  • Red Hat Enterprise Linux 9
  • Red Hat OpenStack Platform 17

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