ng := WithNPeersThrottled(len(sys.peerClients), 16)
	var writeMu sync.Mutex
	for i, client := range sys.peerClients {
		if client == nil {
			continue
		}
		ng.Go(ctx, func() error {
			// Give 15 seconds to each remote call.
			// Errors are logged but not returned.
			ctx, cancel := context.WithTimeout(ctx, 15*time.Second)
			defer cancel()
			data, err := client.DownloadProfileData(ctx)
			if err != nil {

	// This is to avoid too small costly sleeps.
	minSleep time.Duration

	// cycle will be closed
	cycle chan struct{}

	// isScanner should be set when this is used by the scanner
	// to record metrics.
	isScanner bool
}

// newDynamicSleeper
func newDynamicSleeper(factor float64, maxWait time.Duration, isScanner bool) *dynamicSleeper {
	return &dynamicSleeper{
		factor:    factor,

spberry-pi:before{content:"\f7bb"}.fa-ravelry:before{content:"\f2d9"}.fa-react:before{content:"\f41b"}.fa-reacteurope:before{content:"\f75d"}.fa-readme:before{content:"\f4d5"}.fa-rebel:before{content:"\f1d0"}.fa-receipt:before{content:"\f543"}.fa-record-vinyl:before{content:"\f8d9"}.fa-recycle:before{content:"\f1b8"}.fa-red-river:before{content:"\f3e3"}.fa-reddit:before{content:"\f1a1"}.fa-reddit-alien:before{content:"\f281"}.fa-reddit-square:before{content:"\f1a2"}.fa-redhat:before{content:"\f7...

- 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`
  annotation to record the time spent authorizing slow requests. ([#130571](https://github.com/kubernetes/kubernetes/pull/130571), [@hakuna-matatah](https://github.com/hakuna-matatah))

- Deprecate `--record` flag in `kubectl`. The `--record` flag is being replaced with the [mechanism](https://github.com/kubernetes/enhancements/tree/master/keps/sig-cli/859-kubectl-headers) which annotates HTTP requests with kubectl command details. ([#102873](https://github.com/kuber...

        override fun contentType(): MediaType = "text/plain".toMediaType()

        override fun writeTo(sink: BufferedSink) {
          sink.writeUtf8("abc")
          sink.timeout().deadline(5, TimeUnit.SECONDS)
        }
      }
    val request1 =
      Request
        .Builder()
        .url(server.url("/"))
        .method("POST", requestBody1)
        .build()

spberry-pi:before{content:"\f7bb"}.fa-ravelry:before{content:"\f2d9"}.fa-react:before{content:"\f41b"}.fa-reacteurope:before{content:"\f75d"}.fa-readme:before{content:"\f4d5"}.fa-rebel:before{content:"\f1d0"}.fa-receipt:before{content:"\f543"}.fa-record-vinyl:before{content:"\f8d9"}.fa-recycle:before{content:"\f1b8"}.fa-red-river:before{content:"\f3e3"}.fa-reddit:before{content:"\f1a1"}.fa-reddit-alien:before{content:"\f281"}.fa-reddit-square:before{content:"\f1a2"}.fa-redhat:before{content:"\f7...

				iamLogIf(ctx, fmt.Errorf("Failure in periodic refresh for IAM (duration: %s): %v", time.Since(refreshStart), err), logger.WarningKind)
			} else {
				took := time.Since(refreshStart).Seconds()
				if took > maxDurationSecondsForLog {
					// Log if we took a lot of time to load.
					logger.Info("IAM refresh took (duration: %.2fs)", took)
				}
			}

			// Run purge routines once in each hour.

    connection.writePingAndAwaitPong()
    val elapsedNanos = System.nanoTime() - pingAtNanos
    assertThat(elapsedNanos).isGreaterThan(0L)
    assertThat(elapsedNanos).isLessThan(TimeUnit.SECONDS.toNanos(1))

    // Verify the peer received what was expected.
    val pingFrame = peer.takeFrame()
    assertThat(pingFrame.type).isEqualTo(Http2.TYPE_PING)
    assertThat(pingFrame.streamId).isEqualTo(0)

* Azure cloudprovider: Reduce the polling delay for all azure clients to 5 seconds. This should speed up some operations at the cost of some additional quota. ([#43699](https://github.com/kubernetes/kubernetes/pull/43699), [@colemickens](https://github.com/colemickens))