Driving in the Fast Lane – CPU Pinning and NUMA Topology Awareness in OpenStack Compute

Now that we have set up the guest virtual machine instances so that they will only be allowed to run on cores 2, 3, 6, and, 7 we must also set up the host processes so that they will not run on these cores – restricting themselves instead to cores 0, 1, 4, and 5. To do this we must set the isolcpus kernel argument – adding this requires editing the system’s boot configuration.

Source: Driving in the Fast Lane – CPU Pinning and NUMA Topology Awareness in OpenStack Compute

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