// Wait for opened connection to be closed up to Shutdown timeout.
	shutdownTimeout := srv.ShutdownTimeout
	shutdownTimer := time.NewTimer(shutdownTimeout)
	defer shutdownTimer.Stop()

	timer := time.NewTimer(nextPollInterval())
	defer timer.Stop()
	for {
		select {
		case <-shutdownTimer.C:
			if atomic.LoadInt32(&srv.requestCount) <= 0 {
				return nil
			}

			// Write all running goroutines.

				// let recently failed networks to reconnect
				// making MRF wait for 1s before retrying,
				// i.e 4 reconnect attempts.
				time.Sleep(time.Second)
			}

			// wait on timer per heal
			wait := healSleeper.Timer(context.Background())

			scan := madmin.HealNormalScan
			if u.scanMode != 0 {
				scan = u.scanMode
			}
			if u.object == "" {
				healBucket(u.bucket, scan)
			} else {

	for {
		select {
		case <-ctx.Done():
			return
		case <-licenseUpdateTimer.C:

			if globalSubnetConfig.Registered() {
				performLicenseUpdate(ctx, objAPI)
			}

			// Reset the timer for next cycle.
			licenseUpdateTimer.Reset(licUpdateCycle)
		}
	}
}

func performLicenseUpdate(ctx context.Context, objectAPI ObjectLayer) {
	// the subnet license renewal api renews the license only

		// time.
		r := rand.New(rand.NewSource(time.Now().UnixNano()))
		randSleepFor := func() time.Duration {
			return 5*time.Second + time.Duration(float64(5*time.Second)*r.Float64())
		}

		timer := time.NewTimer(randSleepFor())
		defer timer.Stop()

		var (
			quit     bool
			traceMsg string
		)

		for {
			select {
			case rebalErr := <-doneCh:
				quit = true
				now := time.Now()

		randAmt := time.Duration(r.Float64() * float64(baseInterval))
		return baseInterval/2 + randAmt
	}

	var maxDurationSecondsForLog float64 = 5
	timer := time.NewTimer(waitInterval())
	defer timer.Stop()

	for {
		select {
		case <-timer.C:
			// Load all IAM items (except STS creds) periodically.
			refreshStart := time.Now()
			if err := sys.Load(ctx, false); err != nil {

	sha256hex := ""

	// benchmark utility which helps obtain number of allocations and bytes allocated per ops.
	b.ReportAllocs()
	// the actual benchmark for PutObject starts here. Reset the benchmark timer.
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		// insert the object.
		objInfo, err := obj.PutObject(context.Background(), bucket, "object"+strconv.Itoa(i),

		}
		if maxWait > 0 && wantSleep > maxWait {
			wantSleep = maxWait
		}
		timer := time.NewTimer(wantSleep)
		select {
		case <-ctx.Done():
			if !timer.Stop() {
				<-timer.C
				if d.isScanner {
					globalScannerMetrics.incTime(scannerMetricYield, wantSleep)
				}
			}
			return
		case <-timer.C:
			if d.isScanner {
				globalScannerMetrics.incTime(scannerMetricYield, wantSleep)

			wg.Wait()

			// Reset for the next interval
			timer.Reset(globalAPIConfig.getDeleteCleanupInterval())
		}
	}
}

func (s *erasureSets) cleanupStaleUploads(ctx context.Context) {
	timer := time.NewTimer(globalAPIConfig.getStaleUploadsCleanupInterval())
	defer timer.Stop()

	for {
		select {
		case <-ctx.Done():
			return
		case <-timer.C:
			var wg sync.WaitGroup
			for _, set := range s.sets {

		cacheDuration = defaultCacheDuration
	}
	timer := time.NewTimer(cacheDuration)
	defer timer.Stop()

	for {
		select {
		case <-ctx.Done():
			return
		case <-timer.C:
			c.RefreshKey(ctx, logger)

			// Reset for the next interval
			timer.Reset(cacheDuration)
		}
	}
}

type kesClient struct {
	lock         sync.RWMutex

			w, _ := zw.CreateHeader(&FileHeader{
				Name:   "foo",
				Method: Deflate,
			})
			w.Write(bigBuf)
		}
		zw.Close()
	}

	b.ReportAllocs()
	// Run once and then reset the timer.
	// This effectively discards the very large initial flate setup cost,
	// as well as the initialization of bigBuf.
	runOnce(&bytes.Buffer{})
	b.ResetTimer()

	b.RunParallel(func(pb *testing.PB) {