- Kube-apiserver metrics will now include request counts, latencies, and response sizes for /healthz, /livez, and /readyz requests. ([#83598](https://github.com/kubernetes/kubernetes/pull/83598), [@jktomer](https://github.com/jktomer)) [SIG API Machinery]

- Kube-apiserver: gzip compression switched from level 4 to level 1 to improve large list call latencies in exchange for higher network bandwidth usage (10-50% higher). This increases the headroom before very large unpaged list calls exceed request timeout limits. ([#112399](https://github.com/kubernetes/kubernetes/pull/112399), [@shyamjvs](https:/...

// round trips (the time it takes to send data to etcd and get the
// complete response back)
//
// If an API request involves N (N>=1) round trips to etcd, then we will sum
// up the latenciy incurred in each roundtrip.

// It uses the context associated with the request in flight, so there
// are no states shared among the requests in flight, and so there is no
// concurrency overhead.

- Allow to monitor client-go DNS resolver latencies via `rest_client_dns_resolution_duration_seconds` Prometheus metric. ([#115357](https://github.com/kubernetes/kubernetes/pull/115357), [@mfojtik](https://github.com/mfojtik))

* Convert `latency`/`latencies` in metrics name to `duration`. ([#74418](https://github.com/kubernetes/kubernetes/pull/74418), [@danielqsj](https://github.com/danielqsj))
    * The following metrics are changed and mark previous metrics as deprecated:

	throw("castogscanstatus")
	panic("not reached")
}

// casgstatusAlwaysTrack is a debug flag that causes casgstatus to always track
// various latencies on every transition instead of sampling them.
var casgstatusAlwaysTrack = false

// If asked to move to or from a Gscanstatus this will throw. Use the castogscanstatus
// and casfrom_Gscanstatus instead.

* The Prometheus metrics for the kube-apiserver for tracking incoming API requests and latencies now return the `subresource` label for correctly attributing the type of API call. ([#46354](https://github.com/kubernetes/kubernetes/pull/46354), [@smarterclayton](https://github.com/smarterclayton))

- Kube-apiserver: gzip compression switched from level 4 to level 1 to improve large list call latencies in exchange for higher network bandwidth usage (10-50% higher). This increases the headroom before very large unpaged list calls exceed request timeout limits. ([#112398](https://github.com/kubernetes/kubernetes/pull/112398), [@shyamjvs](https:/...

## Changelog since v1.23.11

## Changes by Kind

### Bug or Regression

## Changelog since v1.22.14

## Changes by Kind

### Bug or Regression