histogram

type Metrics struct {
	sync.Mutex
	Time struct {
		Avg    time.Duration
		P1     int64
		P10    int64
		P50    int64
		P97    int64
		P99    int64
		StdDev time.Duration
		Max    time.Duration
		Min    time.Duration
	}
}

type Sample struct {
	sync.Mutex
	Ticker         *time.Ticker
	StartTime      time.Time
	TimeSleep      int
	Count          int64
	Times          timeSlice
	MetricBodySize struct {
		P1  int64
		P10 int64
		P50 int64
		P97 int64
		P99 int64
	}
	MetricReqSec struct {
		P1  int64
		P10 int64
		P50 int64
		P97 int64
		P99 int64
	}
}