Epic Goal

• Support the prefer-align-cpus-by-uncorecache CPUManager feature on MicroShift, as proposed at agreed upon Enhancement Proposal (TBD)

Why is this important?

• Modern CPU have multiple last level caches - clever alignment of workload with available cores can improve performance significantly. k8s is adding this capability to the CPUManager, and MicroShift should allow and support to utilize this.

Scenarios

1. As a user, I must be able to activate the prefer-align-cpus-by-uncorecache policy via MicroShift configuration.
2. As a user, I must receive the same SLA for prefer-align-cpus-by-uncorecache as it it is in OCP (TechPreview, GA).

Acceptance Criteria

• CI - MUST be running successfully with tests automated

Dependencies (internal and external)

1. USHIFT-6079: Explorative work and design proposal.

Previous Work (Optional):

k8s docs  

Upstream KEP: https://github.com/kubernetes/enhancements/blob/master/keps/sig-node/4800-cpumanager-split-uncorecache/README.md#summary 

Promotion PR to Beta in k8s 1.34: https://github.com/kubernetes/enhancements/pull/5390

OCP Tech Preview support statement: https://docs.google.com/presentation/d/1o_vniu1wT2C34I0q8RfGUx15YnRYGfi4cSk7k0dnOK8/edit?slide=id.g3209373ca5a_2_0#slide=id.g3209373ca5a_2_0 

Done Checklist

• CI - CI is running, tests are automated and merged.
• DEV - Downstream build attached to advisory: <link to errata, TBD>
• DOC - Downstream documentation merged: <link to meaningful PR, TBD>