func generateLatencyDistribution(histogram, unHistogram *hdrhistogram.Histogram, requestRate uint64, percentiles Percentiles, file string) error {
if percentiles == nil {
percentiles = Logarithmic
}
f, err := os.Create(file)
if err != nil {
return err
}
defer f.Close()
f.WriteString("Value Percentile TotalCount 1/(1-Percentile)\n\n")
for _, percentile := range percentiles {
value := float64(histogram.ValueAtQuantile(percentile)) / 1000000
_, err := f.WriteString(fmt.Sprintf("%f %f %d %f\n",
value, percentile/100, 0, 1/(1-(percentile/100))))
if err != nil {
return err
}
}
// Generate uncorrected distribution.
if requestRate > 0 {
f, err := os.Create("uncorrected_" + file)
if err != nil {
return err
}
defer f.Close()
f.WriteString("Value Percentile TotalCount 1/(1-Percentile)\n\n")
for _, percentile := range percentiles {
value := float64(unHistogram.ValueAtQuantile(percentile)) / 1000000
_, err := f.WriteString(fmt.Sprintf("%f %f %d %f\n",
value, percentile/100, 0, 1/(1-(percentile/100))))
if err != nil {
return err
}
}
}
return nil
}
func cloneHistogram(in *hdrhistogram.Histogram) *hdrhistogram.Histogram {
return hdrhistogram.Import(in.Export())
}
func record(h *hdrhistogram.Histogram, i int) {
if err := h.RecordValue(int64(i)); err != nil {
panic(err)
}
}
func (self *HdrHistogramLogWriter) OutputHistogram(h *hdrhistogram.Histogram) error {
return binary.Write(self.w, binary.LittleEndian, h.Export())
}