Function minRingSize

fbclock/daemon/daemon.go:135–141

minRingSize calculate how many DataPoint we need to have in a ring buffer in order to provide aggregate values over 1 minute

(configuredRingSize int, interval time.Duration)

	// function to get PHC freq from configured PHC device
	getPHCFreqPPB func() (float64, error)
}

// minRingSize calculate how many DataPoint we need to have in a ring buffer
// in order to provide aggregate values over 1 minute
func minRingSize(configuredRingSize int, interval time.Duration) int {
	size := configuredRingSize
	if time.Duration(size)*interval < time.Minute {
		size = int(math.Ceil(float64(time.Minute) / float64(interval)))
	}
	return size