sma     *SMA             `json:"-"`
}

// Clone returns a copy of XferStats
func (rx *XferStats) Clone() *XferStats {
	curr := rx.curr()
	peak := rx.Peak
	if curr > peak {
		peak = curr
	}
	return &XferStats{
		Curr:    curr,
		Avg:     rx.Avg,
		Peak:    peak,
		N:       rx.N,
		measure: rx.measure,
	}
}

func newXferStats() *XferStats {
	return &XferStats{