// configuration. This is an additional safety check inaddition to adding
	// cachesSynced logic to readiness probe to handle cases where kube-proxy
	// ip tables update latencies.
	// See https://github.com/istio/istio/issues/25495.
	if !s.IsServerReady() {
		return status.Error(codes.Unavailable, "server is not ready to serve discovery information")
	}

	ctx := stream.Context()

	// configuration. This is an additional safety check inaddition to adding
	// cachesSynced logic to readiness probe to handle cases where kube-proxy
	// ip tables update latencies.
	// See https://github.com/istio/istio/issues/25495.
	if !s.IsServerReady() {
		return errors.New("server is not ready to serve discovery information")
	}

	ctx := stream.Context()
	peerAddr := "0.0.0.0"

			Help:      "Response latency distribution in seconds for each verb, dry run value, group, version, resource, subresource, scope and component.",
			// This metric is used for verifying api call latencies SLO,
			// as well as tracking regressions in this aspects.
			// Thus we customize buckets significantly, to empower both usecases.
			Buckets: []float64{0.005, 0.025, 0.05, 0.1, 0.2, 0.4, 0.6, 0.8, 1.0, 1.25, 1.5, 2, 3,

		// at the end of every batch. Furthermore, it only yields its time if there
		// isn't spare idle time available on other cores. If there's available idle
		// time, helping to sweep can reduce allocation latencies by getting ahead of
		// the proportional sweeper and having spans ready to go for allocation.
		const sweepBatchSize = 10
		nSwept := 0
		for sweepone() != ^uintptr(0) {
			nSwept++

```

Failing to specify the region-specific endpoint for buckets requiring V4 signatures means:

* 3 round-trips to AWS, as opposed to one, for every file upload and download.
* Depending on location - increased network latencies and slower builds.
* Increased likelihood of transmission failures.
--

[[sub:s3_cross_account]]
==== AWS S3 Cross Account Access

	// Mutex to serialize new pod admission and existing pod resizing
	podResizeMutex sync.Mutex

	// OpenTelemetry Tracer
	tracer trace.Tracer

	// Track node startup latencies
	nodeStartupLatencyTracker util.NodeStartupLatencyTracker
}

// ListPodStats is delegated to StatsProvider, which implements stats.Provider interface

- A new `pod_status_sync_duration_seconds`...

- 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))