go-pulse/metrics/gauge_float64_test.go
Exca-DK b4dcd1a391
metrics: make gauge_float64 and counter_float64 lock free (#27025)
Makes the float-gauges lock-free

name                      old time/op  new time/op  delta
CounterFloat64Parallel-8  1.45µs ±10%  0.85µs ± 6%  -41.65%  (p=0.008 n=5+5)

---------

Co-authored-by: Exca-DK <dev@DESKTOP-RI45P4J.localdomain>
Co-authored-by: Martin Holst Swende <martin@swende.se>
2023-04-04 09:53:44 -04:00

81 lines
1.6 KiB
Go

package metrics
import (
"sync"
"testing"
)
func BenchmarkGaugeFloat64(b *testing.B) {
g := NewGaugeFloat64()
b.ResetTimer()
for i := 0; i < b.N; i++ {
g.Update(float64(i))
}
}
func BenchmarkGaugeFloat64Parallel(b *testing.B) {
c := NewGaugeFloat64()
var wg sync.WaitGroup
for i := 0; i < 10; i++ {
wg.Add(1)
go func() {
for i := 0; i < b.N; i++ {
c.Update(float64(i))
}
wg.Done()
}()
}
wg.Wait()
if have, want := c.Value(), float64(b.N-1); have != want {
b.Fatalf("have %f want %f", have, want)
}
}
func TestGaugeFloat64(t *testing.T) {
g := NewGaugeFloat64()
g.Update(47.0)
if v := g.Value(); 47.0 != v {
t.Errorf("g.Value(): 47.0 != %v\n", v)
}
}
func TestGaugeFloat64Snapshot(t *testing.T) {
g := NewGaugeFloat64()
g.Update(47.0)
snapshot := g.Snapshot()
g.Update(float64(0))
if v := snapshot.Value(); 47.0 != v {
t.Errorf("g.Value(): 47.0 != %v\n", v)
}
}
func TestGetOrRegisterGaugeFloat64(t *testing.T) {
r := NewRegistry()
NewRegisteredGaugeFloat64("foo", r).Update(47.0)
t.Logf("registry: %v", r)
if g := GetOrRegisterGaugeFloat64("foo", r); 47.0 != g.Value() {
t.Fatal(g)
}
}
func TestFunctionalGaugeFloat64(t *testing.T) {
var counter float64
fg := NewFunctionalGaugeFloat64(func() float64 {
counter++
return counter
})
fg.Value()
fg.Value()
if counter != 2 {
t.Error("counter != 2")
}
}
func TestGetOrRegisterFunctionalGaugeFloat64(t *testing.T) {
r := NewRegistry()
NewRegisteredFunctionalGaugeFloat64("foo", r, func() float64 { return 47 })
if g := GetOrRegisterGaugeFloat64("foo", r); g.Value() != 47 {
t.Fatal(g)
}
}