// we launched a new worker.
		if mainWorker && len(h.logCh) > cap(h.logCh)/2 {
			nWorkers := h.workers.Load()
			if nWorkers < h.maxWorkers {
				if time.Since(h.lastStarted).Milliseconds() > 10 {
					h.lastStarted = time.Now()
					go h.startQueueProcessor(ctx, false)
				}
			}
		}

		var err error
		if !isDirQueue {

maximum concurrent requests allowed before we start slowing things down can be configured with `mc admin config set alias/ heal max_io=30` . By default the wait delay is `250ms` beyond 100 concurrent operations. This means the healer will sleep *250 milliseconds* at max for each heal operation if there are more than *100* concurrent client requests.

In most setups this is sufficient to heal the content after drive replacements. Setting `max_sleep` to a *lower* value and setting `max_io` to a...

  fun timeoutsUpdatedOnReusedConnections() {
    server.enqueue(MockResponse(body = "abc"))
    server.enqueue(
      MockResponse
        .Builder()
        .body("def")
        .throttleBody(1, 750, TimeUnit.MILLISECONDS)
        .build(),
    )

    // First request: time out after 1s.
    client =
      client
        .newBuilder()
        .readTimeout(Duration.ofSeconds(1))
        .build()

        .build()

    // Delay the response to give 1 ping enough time to be sent and replied to.
    server.enqueue(
      MockResponse
        .Builder()
        .bodyDelay(750, TimeUnit.MILLISECONDS)
        .body("ABC")
        .build(),
    )
    val call = client.newCall(Request(server.url("/")))
    val response = call.execute()
    assertThat(response.body.string()).isEqualTo("ABC")

  // Guarded by this.
  private val currentPushRequests = mutableSetOf<Int>()

  init {
    if (builder.pingIntervalMillis != 0) {
      val pingIntervalNanos = TimeUnit.MILLISECONDS.toNanos(builder.pingIntervalMillis.toLong())
      writerQueue.schedule("$connectionName ping", pingIntervalNanos) {
        val failDueToMissingPong =
          withLock {

	sent := time.Now()
	resp, err := getSysConfigRPC.Call(ctx, client.gridConn(), grid.NewMSS())
	info = resp.ValueOrZero()
	if ti, ok := info.Config["time-info"].(madmin.TimeInfo); ok {
		rt := int32(time.Since(sent).Milliseconds())
		ti.RoundtripDuration = rt
		info.Config["time-info"] = ti
	}
	return info, err
}

// GetSysErrors - fetch sys errors for a remote node.

	if serverDebugLog {
		fmt.Println(time.Now().Round(time.Millisecond).Format(time.RFC3339), " bootstrap: ", msg)
	}

	noSubs := globalTrace.NumSubscribers(madmin.TraceBootstrap) == 0
	if noSubs {
		return
	}

	globalTrace.Publish(info)
}

func bootstrapTrace(msg string, worker func()) {
	if serverDebugLog {
		fmt.Println(time.Now().Round(time.Millisecond).Format(time.RFC3339), " bootstrap: ", msg)
	}

	if err != nil {
		atomic.AddUint64(&sys.TotalRefreshFailures, 1)
		return err
	}
	loadDuration := time.Since(loadStartTime)

	atomic.StoreUint64(&sys.LastRefreshDurationMilliseconds, uint64(loadDuration.Milliseconds()))
	atomic.StoreUint64(&sys.LastRefreshTimeUnixNano, uint64(loadStartTime.Add(loadDuration).UnixNano()))
	atomic.AddUint64(&sys.TotalRefreshSuccesses, 1)

	if !globalSiteReplicatorCred.IsValid() {

- Replaced *_admission_latencies_milliseconds_summary and *_admission_latencies_milliseconds metrics because they were reporting seconds rather than milliseconds. They were also subject to multiple naming guideline violations (units should be in base units and "duration" is the best practice labelling to measure the time a request takes). Please convert to use *_admission_duration_seconds and *_admissi...

	k, v, ok := lc.GetOldest()
	if k != "" {
		t.Fatalf("should be empty")
	}
	if v != "" {
		t.Fatalf("should be empty")
	}
	if ok {
		t.Fatalf("should be false")
	}

	lc.Add("key1", "val1")

	time.Sleep(100 * time.Millisecond) // not enough to expire
	if lc.Len() != 1 {