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Duration on Metrics and depenendent Reporters

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This is real duration, calculated by subtracting the last Result's
timestamp with the first Result's timestamp. Garbage
collection and go routine scheduling delays can affect this number.
Fixes #29
This commit is contained in:
Tomás Senart
2013-10-29 13:48:37 +01:00
parent ae8650d641
commit a9657e2660
4 changed files with 9 additions and 3 deletions
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2
README.md
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@@ -118,6 +118,7 @@ Specifies the kind of report to be generated. It defaults to text.
##### text
```
Requests [total] 1200
Duration [total] 1.998307684s
Latencies [mean, 95, 99, max] 223.340085ms, 326.913687ms, 416.537743ms, 7.788103259s
Bytes In [total, mean] 3714690, 3095.57
Bytes Out [total, mean] 0, 0.00
@@ -149,6 +150,7 @@ Get http://localhost:6060: http: can't write HTTP request on broken connection
"total": 0,
"mean": 0
},
"duration": 1998307684,
"requests": 1200,
"success": 0.11666666666666667,
"status_codes": {

2
lib/metrics.go
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@@ -27,6 +27,7 @@ type Metrics struct {
Mean float64 `json:"mean"`
} `json:"bytes_out"`
Duration time.Duration `json:"duration"`
Requests uint64 `json:"requests"`
Success float64 `json:"success"`
StatusCodes map[string]int `json:"status_codes"`
@@ -60,6 +61,7 @@ func NewMetrics(results []Result) *Metrics {
}
}
m.Duration = results[len(results)-1].Timestamp.Sub(results[0].Timestamp)
m.Latencies.Mean = time.Duration(float64(totalLatencies) / float64(m.Requests))
m.Latencies.P95 = time.Duration(quants.Query(0.95))
m.Latencies.P99 = time.Duration(quants.Query(0.99))

7
lib/metrics_test.go
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@@ -7,9 +7,9 @@ import (
func TestNewMetrics(t *testing.T) {
m := NewMetrics([]Result{
Result{500, time.Now(), 100 * time.Millisecond, 10, 30, "Internal server error"},
Result{200, time.Now(), 20 * time.Millisecond, 20, 20, ""},
Result{200, time.Now(), 30 * time.Millisecond, 30, 10, ""},
Result{500, time.Unix(0, 0), 100 * time.Millisecond, 10, 30, "Internal server error"},
Result{200, time.Unix(1, 0), 20 * time.Millisecond, 20, 20, ""},
Result{200, time.Unix(2, 0), 30 * time.Millisecond, 30, 10, ""},
})
for field, values := range map[string][]float64{
@@ -27,6 +27,7 @@ func TestNewMetrics(t *testing.T) {
"Latencies.Mean": []time.Duration{m.Latencies.Mean, 50 * time.Millisecond},
"Latencies.P95": []time.Duration{m.Latencies.P95, 30 * time.Millisecond},
"Latencies.P99": []time.Duration{m.Latencies.P99, 30 * time.Millisecond},
"Duration": []time.Duration{m.Duration, 2 * time.Second},
} {
if values[0] != values[1] {
t.Errorf("%s: want: %s, got: %s", field, values[1], values[0])

1
lib/reporters.go
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@@ -19,6 +19,7 @@ func ReportText(results []Result) ([]byte, error) {
w := tabwriter.NewWriter(out, 0, 8, 2, '\t', tabwriter.StripEscape)
fmt.Fprintf(w, "Requests\t[total]\t%d\n", m.Requests)
fmt.Fprintf(w, "Duration\t[total]\t%s\n", m.Duration)
fmt.Fprintf(w, "Latencies\t[mean, 95, 99, max]\t%s, %s, %s, %s\n",
m.Latencies.Mean, m.Latencies.P95, m.Latencies.P99, m.Latencies.Max)
fmt.Fprintf(w, "Bytes In\t[total, mean]\t%d, %.2f\n", m.BytesIn.Total, m.BytesIn.Mean)