func (l *LastMinuteHistogram) Add(size int64, t time.Duration) {
	l[sizeToTag(size)].add(t)
}

// GetAvgData will return the average for each bucket from the last time minute.
// The number of objects is also included.
func (l *LastMinuteHistogram) GetAvgData() [sizeLastElemMarker]AccElem {
	var res [sizeLastElemMarker]AccElem
	for i, elem := range l[:] {
		res[i] = elem.getTotal()
	}

	return
}

// Get upload latency of each object size range
func (rl ReplicationLatency) getUploadLatency() (ret map[string]uint64) {
	ret = make(map[string]uint64)
	avg := rl.UploadHistogram.GetAvgData()
	for k, v := range avg {
		// Convert nanoseconds to milliseconds
		ret[sizeTagToString(k)] = uint64(v.avg() / time.Millisecond)
	}
	return
}

// Update replication upload latency with a new value