Our doc currently states for 4.16:

Currently, disabling CPU load balancing is not supported by cgroup v2. As a result, you might not get the desired behavior from performance profiles if you have cgroup v2 enabled. Enabling cgroup v2 is not recommended if you are using performance profiles.

https://docs.openshift.com/container-platform/4.16/nodes/clusters/nodes-cluster-cgroups-2.html#nodes-clusters-cgroups-2_nodes-cluster-cgroups-2

Please remove that note from our documentation, ASAP. cgroups v2 is fully supported with perfprofiles in 4.16.

That comment is a year old, thus from older versions:
https://github.com/openshift/openshift-docs/commit/094298bc0685f4af95555065eec0beb78a493c5c

cgroupv2 is fully supported with perfprofiles:
https://access.redhat.com/articles/7074947
https://issues.redhat.com/browse/ECOPS-133

You might want to search the rest of the documentation for similar comments and remove them, as well.

fbaudin@redhat.com msivak@redhat.com