defer sr.lock.RUnlock()
	m := make(map[string]SRMetric, len(sr.M))
	for dID, v := range sr.M {
		t := newXferStats()
		mx := make(map[RMetricName]XferStats)

		if v.XferRateLrg != nil {
			mx[Large] = *v.XferRateLrg.Clone()
			m := t.merge(*v.XferRateLrg)
			t = &m
		}
		if v.XferRateSml != nil {
			mx[Small] = *v.XferRateSml.Clone()
			m := t.merge(*v.XferRateSml)
			t = &m
		}

		mx[Total] = *t

	for arn, v := range brs.Stats {
		lcurrTgt := v.XferRateLrg.curr()
		scurrTgt := v.XferRateSml.curr()
		totPeak = math.Max(math.Max(v.XferRateLrg.Peak, v.XferRateSml.Peak), totPeak)
		totPeak = math.Max(math.Max(lcurrTgt, scurrTgt), totPeak)
		tcount := 0
		if v.XferRateLrg.Peak > 0 {
			tcount++
		}
		if v.XferRateSml.Peak > 0 {
			tcount++
		}