OpenStack CPU isolation guidance for RHEL 8 and RHEL 9

Updated -

This article contains forward looking guidance for CPU isolation in anticipation of RHEL 9, but is also relevant to RHEL 8 based deployments of Red Hat OpenStack Platform:

  • RHEL 9 will not deprecate isolcpus. Any usage of isolcpus from RHEL-8 will continue to work on RHEL-9.
  • To ensure that host processes do not run on the CPU cores rese...

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