*  -  the `health` plugin now includes the `lameduck` option by default, which waits for a duration before shutting down.
* Kubeadm now includes CoreDNS version 1.6.5 ([#85108](https://github.com/kubernetes/kubernetes/pull/85108), [@rajansandeep](https://github.com/rajansandeep))
    *  - `kubernetes` plugin adds metrics to measure kubernetes control plane latency.

- Improved scheduling latency when many gated pods ([#124848](https://github.com/kubernetes/kubernetes/pull/124848), [@gabesaba](https://github.com/gabesaba)) [SIG Scheduling and Testing]

			runtime.Gosched()
			acc = e.cached.Load()
		}
	}
	atomic.AddInt64(&acc.N, 1)
	atomic.AddInt64(&acc.Total, int64(value))
	atomic.AddInt64(&acc.Size, sz)
}

// total returns the total call count and latency for the last minute.
func (e *lockedLastMinuteLatency) total() AccElem {
	e.mu.Lock()
	defer e.mu.Unlock()
	return e.getTotal()
}

- Added `apiserver.latency.k8s.io/authentication` annotation to the audit log to record the
  time spent authenticating slow requests. Also added `apiserver.latency.k8s.io/authorization`

- Kubernetes is now built with go 1.21.11 ([#125369](https://github.com/kubernetes/kubernetes/pull/125369), [@cpanato](https://github.com/cpanato)) [SIG Release and Testing]

### Bug or Regression

- Improved scheduling latency when many gated pods ([#124866](https://github.com/kubernetes/kubernetes/pull/124866), [@gabesaba](https://github.com/gabesaba)) [SIG Scheduling and Testing]

### Serverside Apply - Beta 2

* Add readyReplicas to replica sets ([#29481](https://github.com/kubernetes/kubernetes/pull/29481), [@kargakis](https://github.com/kargakis))

- `kubelet` now emits a metric for end-to-end pod startup latency, including image pull. ([#121041](https://github.com/kubernetes/kubernetes/pull/121041), [@ruiwen-zhao](https://github.com/ruiwen-zhao))
- `kubelet` now exposes latency metrics of different stages of the node startup. ([#118568](https://github.com/kubernetes/kubernetes/pull/118568), [@qiutongs](https://github.com/qiutongs))

  * Pods can now consume Secret data in environment variables and inject those
environment variables into a container’s command-line args.
  * Stable version of Heapster which scales up to 1000 nodes: more metrics, reduced
latency, reduced cpu/memory consumption (~4mb per monitored node).
  * Pods now have a security context which allows users to specify:
     * attributes which apply to the whole pod:
        * User ID

  1. For volumes provisioned/deleted via external provisioner/deleter, `storage_operation_duration_seconds` will NOT wait for the external operation to be done before reporting latency metric (effectively close to 0). This will be fixed by using `volum...