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|
package xprometheus
import (
"sync"
"testing"
"github.com/bradfitz/iter"
"github.com/prometheus/client_golang/prometheus"
)
func BenchmarkExpvarCollector_Collect(b *testing.B) {
ec := NewExpvarCollector()
ch := make(chan prometheus.Metric)
n := 0
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
for range ch {
n++
}
}()
b.ReportAllocs()
for range iter.N(b.N) {
ec.Collect(ch)
}
close(ch)
wg.Wait()
b.Logf("collected %d metrics (%f per collect)", n, float64(n)/float64(b.N))
}
|
