func Analyze(times []float64) {
sorted := times
sort.SortFloat64s(sorted)
tot := 0.0
for _, v := range times {
tot += v
}
n := float64(len(times))
avg := tot / n
variance := 0.0
for _, v := range times {
variance += (v - avg) * (v - avg)
}
variance /= n
stddev := math.Sqrt(variance)
median := sorted[len(times)/2]
perc90 := sorted[int(n*0.9)]
perc10 := sorted[int(n*0.1)]
fmt.Printf(
"%d samples\n"+
"avg %.2f ms 2sigma %.2f "+
"median %.2fms\n"+
"10%%tile %.2fms, 90%%tile %.2fms\n",
len(times), avg, 2*stddev, median, perc10, perc90)
}
func normalizeExpenses(e []float64) []float64 {
sort.SortFloat64s(e)
e = uniq(e)
return e
}