Enable huge pages for OpenStack

Enable huge pages for OpenStack

Note

Consider this section as part of Deploy an OpenStack cluster.

The huge pages OpenStack feature provides essential performance improvements for applications that are highly memory IO-bound. Huge pages should be enabled on a per compute node basis.

Since NUMATopologyFilter is enabled in a MOS deployment by default, to activate the feature, you need to enable huge pages on the host as described in Mirantis Container Cloud Operations Guide: Enable huge pages in a host profile.

Note

The multi-size huge pages are not fully supported by Kubernetes before 1.19. Therefore, define only one size in kernel parameters.