On RHEL10.1 RHCOS after applying Performance profile all the platform pods like tuned, ovn-kubenet are pinned to reserved cpus instead of all the cpus of the node.    

    cri-o-1.34.3-2.rhaos4.21.gitd80d17d.el9.x86_64

    everytime

1. Apply the below performance profile:
apiVersion: performance.openshift.io/v2
kind: PerformanceProfile
metadata:
  name: performance
spec:
  cpu:
    isolated: 8-23
    reserved: 0-7
  hugepages:
    defaultHugepagesSize: 1G
    pages:
    - count: 1
      node: 0
      size: 1G
    - count: 128
      node: 1
      size: 2M
  kernelPageSize: 4k
  machineConfigPoolSelector:
    machineconfiguration.openshift.io/role: worker-cnf
  net:
    userLevelNetworking: true
  nodeSelector:
    node-role.kubernetes.io/worker-cnf: ""
  numa:
    topologyPolicy: single-numa-node
  realTimeKernel:
    enabled: false
  workloadHints:
    highPowerConsumption: true
    perPodPowerManagement: false
    realTime: true


2. oc debug node/<worker-cnf> (node on which performance profile is applied)
3. Find any burstable container process and run `taskset -pc <pid>`
4. Observe the cpu affinity contains all cpus on the node

Versions: 
Red Hat Enterprise Linux release 10.1 (Coughlan)
kernel-modules-extra-matched-6.12.0-124.27.1.el10_1.x86_64
kernel-core-6.12.0-124.27.1.el10_1.x86_64
kernel-modules-core-6.12.0-124.27.1.el10_1.x86_64
kernel-modules-6.12.0-124.27.1.el10_1.x86_64
kernel-modules-extra-6.12.0-124.27.1.el10_1.x86_64
kernel-6.12.0-124.27.1.el10_1.x86_64
registry.ci.openshift.org/rhcos-devel/ocp-4.21-10.1:4.21.0-rc.2-x86_64

sh-5.2# crictl ps | grep tuned
f09e737fa1838       50fd4628fe135e8e679960606e983bbcf613e4cf3dd371ae2d81e23a078de8df                                                         2 hours ago         Running             tuned                                6                   1c6b08fa54519       tuned-rjhgm                                                                   openshift-cluster-node-tuning-operator
sh-5.2# crictl inspect f09e737fa1838 | grep pid
    "pid": 5098,
          "pids": {
sh-5.2# taskset -pc 5098
pid 5098's current affinity list: 0-7

sh-5.2# crictl inspect 0ca2e9011a35f | grep pid
    "pid": 5548,
          "pids": {
sh-5.2# taskset -pc 5548
pid 5548's current affinity list: 0-7

    burstable pods should have all the cpus 0-23

    Refer similar bug filed in RHEL9: https://issues.redhat.com/browse/OCPBUGS-15102