Enable huge pages for OpenStack¶
Consider this section as part of Deploy an OpenStack cluster.
The instruction provided in this section applies to both OpenStack with OVS and OpenStack with Tungsten Fabric topologies.
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. By default,
NUMATopologyFilter is enabled
in a MOS deployment.
To activate the feature, you need to enable huge pages on the dedicated bare metal host as described in enable-hugepages-bm during the predeployment bare metal configuration.
The multi-size huge pages are not fully supported by Kubernetes versions before 1.19. Therefore, define only one size in kernel parameters.