cpumanager: promote perfer-align-cpus-by-uncorecache to beta

Author: wongchar

keps/prod-readiness/sig-node/4800.yaml

@@ -1,3 +1,5 @@
 kep-number: 4800
 alpha:
   approver: "@soltysh"
+beta:
+  approver: "@soltysh"

keps/sig-node/4800-cpumanager-split-uncorecache/README.md

@@ -20,6 +20,7 @@
       - [e2e tests](#e2e-tests)
   - [Graduation Criteria](#graduation-criteria)
     - [Alpha](#alpha)
+    - [Beta](#beta)
   - [Upgrade / Downgrade Strategy](#upgrade--downgrade-strategy)
   - [Version Skew Strategy](#version-skew-strategy)
 - [Production Readiness Review Questionnaire](#production-readiness-review-questionnaire)
@@ -292,6 +293,13 @@ N/A. This feature requires a e2e test for testing.
 - E2E Tests will be skipped until nodes with uncore cache can be provisioned within CI hardware. Work is ongoing to add required systems (https://github.com/kubernetes/k8s.io/issues/7339). E2E testing will be required to graduate to beta.
 - Providing a metric to verify uncore cache alignment will be required to graduate to beta.
 
+#### Beta
+
+- Address bug fixes and missing features: ability to schedule odd-integer CPUs for uncore cache alignment
+- Add tests to ensure functional compatibility with existing CPUManager options
+- Add tests to ensure and report incompatibility with existing CPUManager options that are not supported with prefer-align-cpus-by-uncore-cache
+- Additional benchmarks to show performance benefit of prefer-align-cpus-by-uncore-cache feature
+
 ### Upgrade / Downgrade Strategy
 
 N/A
@@ -336,7 +344,7 @@ To enable this feature requires enabling the feature gates for static policy in
 For `CPUManager` it is a requirement going from `none` to `static` policy cannot be done dynamically because of the `cpu_manager_state file`. The node needs to be drained and the policy checkpoint file (`cpu_manager_state`) need to be removed before restarting Kubelet. This feature specifically relies on the `static` policy being enabled.
 
 - [x] Feature gate (also fill in values in `kep.yaml`)
-  - Feature gate name: `CPUManagerAlphaPolicyOptions`
+  - Feature gate name: `CPUManagerBetaPolicyOptions`
   - Components depending on the feature gate: `kubelet`
 - [x] Other
   - Describe the mechanism: Change the `kubelet` configuration to set a `CPUManager` policy of static then setting the policy option of `prefer-align-cpus-by-uncorecache`
@@ -526,6 +534,8 @@ For each of them, fill in the following information by copying the below templat
 
 - The outlined sections were filled out was created 2024-08-27.
 
+- 2025-06-09: Submitted PR to promote feature to beta
+
 ## Drawbacks
 
 N/A

keps/sig-node/4800-cpumanager-split-uncorecache/kep.yaml

@@ -22,12 +22,12 @@ see-also:
 replaces: []
 
 # The target maturity stage in the current dev cycle for this KEP.
-stage: alpha
+stage: beta
 
 # The most recent milestone for which work toward delivery of this KEP has been
 # done. This can be the current (upcoming) milestone, if it is being actively
 # worked on.
-latest-milestone: "v1.33"
+latest-milestone: "v1.34"
 
 # The milestone at which this feature was, or is targeted to be, at each stage.
 milestone:
@@ -38,7 +38,7 @@ milestone:
 # The following PRR answers are required at alpha release
 # List the feature gate name and the components for which it must be enabled
 feature-gates:
-  - name: "CPUManagerPolicyAlphaOptions"
+  - name: "CPUManagerPolicyBetaOptions"
     components:
       - kubelet
 disable-supported: true