timeout := newDynamicTimeout(time.Minute, time.Second)

	initial := timeout.Timeout()

	for i := 0; i < dynamicTimeoutLogSize; i++ {
		timeout.LogFailure()
	}

	adjusted := timeout.Timeout()

	for i := 0; i < dynamicTimeoutLogSize; i++ {
		timeout.LogFailure()
	}

	adjustedAgain := timeout.Timeout()

	if initial >= adjusted || adjusted >= adjustedAgain {
		t.Errorf("Failure to increase timeout multiple times")

	newCtx, cancel := context.WithCancel(ctx)
	if !di.rwMutex.GetLock(newCtx, cancel, di.opsID, lockSource, dsync.Options{
		Timeout:       timeout.Timeout(),
		RetryInterval: timeout.RetryInterval(),
	}) {
		timeout.LogFailure()
		defer cancel()
		if err := newCtx.Err(); err == context.Canceled {
			return LockContext{ctx: ctx, cancel: func() {}}, err
		}
		return LockContext{ctx: ctx, cancel: func() {}}, OperationTimedOut{}
	}

// LogSuccess logs the duration of a successful action that
// did not hit the timeout
func (dt *dynamicTimeout) LogSuccess(duration time.Duration) {
	dt.logEntry(duration)
}

// LogFailure logs an action that hit the timeout
func (dt *dynamicTimeout) LogFailure() {
	dt.logEntry(maxDuration)
}

// logEntry stores a log entry
func (dt *dynamicTimeout) logEntry(duration time.Duration) {
	if duration < 0 {
		return
	}

	expSuccess := 10
	expFailure := 5
	for i := 0; i < expSuccess; i++ {
		globalTierMetrics.logSuccess(tier)
	}
	for i := 0; i < expFailure; i++ {
		globalTierMetrics.logFailure(tier)
	}
	metrics := globalTierMetrics.Report()
	var succ, fail float64
	for _, metric := range metrics {
		switch metric.Description.Name {
		case tierRequestsSuccess:
			succ += metric.Value

}

func (t *tierMetrics) logSuccess(tier string) {
	t.Lock()
	defer t.Unlock()

	stat := t.requestsCount[tier]
	stat.success++
	t.requestsCount[tier] = stat
}

func (t *tierMetrics) logFailure(tier string) {
	t.Lock()
	defer t.Unlock()

	stat := t.requestsCount[tier]
	stat.failure++
	t.requestsCount[tier] = stat
}

var (
	// {minio_node}_{tier}_{ttlb_seconds_distribution}

			op.TimeToResponseNS = since.Nanoseconds()
			globalTierMetrics.Observe(tier, since)
			globalTierMetrics.logSuccess(tier)
		} else {
			op.Error = err.Error()
			globalTierMetrics.logFailure(tier)
		}

		logger.GetReqInfo(ctx).AppendTags("tierStats", op)
	}
}

// getTransitionedObjectReader returns a reader from the transitioned tier.