ch := make(chan prometheus.Metric)
	go func() {
		defer xioutil.SafeClose(ch)
		// Collects prometheus metrics from hist and sends it over ch
		hist.Collect(ch)
	}()

	// Converts metrics received into internal []Metric type
	var metrics []MetricV2
	for promMetric := range ch {
		dtoMetric := &dto.Metric{}
		err := promMetric.Write(dtoMetric)

		return
	}
	for zb0001 > 0 {
		zb0001--
		field, err = dc.ReadMapKeyPtr()
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		switch msgp.UnsafeString(field) {
		case "ch":
			err = z.Children.DecodeMsg(dc)
			if err != nil {
				err = msgp.WrapError(err, "Children")
				return
			}
		case "sz":
			z.Size, err = dc.ReadInt64()
			if err != nil {

		}
		return
	}

	var ch, healCh chan<- ReplicationWorkerOperation
	switch ri.OpType {
	case replication.HealReplicationType, replication.ExistingObjectReplicationType:
		ch = p.mrfReplicaCh
		healCh = p.getWorkerCh(ri.Name, ri.Bucket, ri.Size)
	default:
		ch = p.getWorkerCh(ri.Name, ri.Bucket, ri.Size)
	}
	if ch == nil && healCh == nil {
		return
	}

	select {

		<-ctx.Done()
		globalNotificationSys.ServiceFreeze(ctx, false)
	}()

	keepAliveTicker := time.NewTicker(500 * time.Millisecond)
	defer keepAliveTicker.Stop()

	enc := json.NewEncoder(w)
	ch := objectSpeedTest(ctx, speedTestOpts{
		objectSize:       size,
		concurrencyStart: concurrent,
		duration:         duration,
		autotune:         autotune,
		storageClass:     storageClass,