- Cleanup: removed `getStorageAccountName` warning messages.
   ([#121983](https://github.com/kubernetes/kubernetes/pull/121983), [@andyzhangx](https://github.com/andyzhangx))

- Fixed a bug in previous releases where a pod could be placed inside another pod's cgroup when specifying --cgroup-root ([#70678](https://github.com/kubernetes/kubernetes/pull/70678), [@dashpole](https://github.com/dashpole))
- Optimized calculating stats when only CPU and Memory stats are returned from Kubelet stats/summary http endpoint.  ([#68841](https://github.com/kubernetes/kubernetes/pull/68841), [@krzysztof-jastrzebski](https://github.com/krzysztof-jastrzebski))

- kubeadm will now not fail preflight checks when running on >= 5.0 Linux kernel ([#74355](https://github.com/kubernetes/kubernetes/pull/74355), [@brb](https://github.com/brb))
- Scheduler cache snapshot algorithm has been optimized to improve scheduling throughput. ([#74041](https://github.com/kubernetes/kubernetes/pull/74041), [@bsalamat](https://github.com/bsalamat))

- Client-go: add new histogram metric to record the size of the requests and responses. ([#108296](https://github.com/kubernetes/kubernetes/pull/108296), [@aojea](https://github.com/aojea))
- CycleState is now optimized for "write once and read many times". ([#108724](https://github.com/kubernetes/kubernetes/pull/108724), [@sanposhiho](https://github.com/sanposhiho))

    * Disable the metadata agent for monitored resource construction in logging.
    * Disable timestamp adjustment in logs to optimize performance.
    * Reduce logging agent buffer chunk limit to 512k to optimize performance.

### Additional Notable Feature Updates

- [Topology Manager](https://github.com/kubernetes/enhancements/issues/693), a new Kubelet component, aims to co-ordinate resource assignment decisions to provide optimized resource allocations.
- [IPv4/IPv6 dual-stack](https://kubernetes.io/docs/concepts/services-networking/dual-stack) enables the allocation of both IPv4 and IPv6 addresses to Pods and Services.

- Moved remote CRI implementation from kubelet to `k8s.io/cri-client` repository. ([#124634](https://github.com/kubernetes/kubernetes/pull/124634), [@saschagrunert](https://github.com/saschagrunert)) [SIG Node, Release and Testing]
- Optimized log output to avoid printing out redundant information of the pod. ([#124055](https://github.com/kubernetes/kubernetes/pull/124055), [@yangjunmyfm192085](https://github.com/yangjunmyfm192085))

* Fixes discovery information for scale subresources in the apps API group ([#54683](https://github.com/kubernetes/kubernetes/pull/54683), [@liggitt](https://github.com/liggitt))
* Optimize Repeated registration of AlgorithmProvider when ApplyFeatureGates ([#54047](https://github.com/kubernetes/kubernetes/pull/54047), [@kuramal](https://github.com/kuramal))

* Update FitError as a message component into the PodConditionUpdater. ([#39491](https://github.com/kubernetes/kubernetes/pull/39491), [@jayunit100](https://github.com/jayunit100))
* Fix comment and optimize code ([#38084](https://github.com/kubernetes/kubernetes/pull/38084), [@tanshanshan](https://github.com/tanshanshan))

    * Disable the metadata agent for monitored resource construction in logging.
    * Disable timestamp adjustment in logs to optimize performance.
    * Reduce logging agent buffer chunk limit to 512k to optimize performance.