mirror of https://github.com/prometheus/prometheus
Fabian Reinartz
8 years ago
parent
50791a412e
commit
eedbebe1d7
@ -1,10 +0,0 @@
|
||||
package tsdb
|
||||
|
||||
// maxMapSize represents the largest mmap size supported by Bolt.
|
||||
const maxMapSize = 0xFFFFFFFFFFFF // 256TB
|
||||
|
||||
// maxAllocSize is the size used when creating array pointers.
|
||||
const maxAllocSize = 0x7FFFFFFF
|
||||
|
||||
// Are unaligned load/stores broken on this arch?
|
||||
var brokenUnaligned = false
|
||||
@ -0,0 +1,191 @@
|
||||
package labels
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"math/rand"
|
||||
"os"
|
||||
"testing"
|
||||
|
||||
"github.com/bradfitz/slice"
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
"github.com/prometheus/common/expfmt"
|
||||
"github.com/stretchr/testify/require"
|
||||
)
|
||||
|
||||
func TestCompare(t *testing.T) {
|
||||
cases := []struct {
|
||||
a, b []Label
|
||||
res int
|
||||
}{
|
||||
{
|
||||
a: []Label{},
|
||||
b: []Label{},
|
||||
res: 0,
|
||||
},
|
||||
{
|
||||
a: []Label{{"a", ""}},
|
||||
b: []Label{{"a", ""}, {"b", ""}},
|
||||
res: -1,
|
||||
},
|
||||
{
|
||||
a: []Label{{"a", ""}},
|
||||
b: []Label{{"a", ""}},
|
||||
res: 0,
|
||||
},
|
||||
{
|
||||
a: []Label{{"aa", ""}, {"aa", ""}},
|
||||
b: []Label{{"aa", ""}, {"ab", ""}},
|
||||
res: -1,
|
||||
},
|
||||
{
|
||||
a: []Label{{"aa", ""}, {"abb", ""}},
|
||||
b: []Label{{"aa", ""}, {"ab", ""}},
|
||||
res: 1,
|
||||
},
|
||||
{
|
||||
a: []Label{
|
||||
{"__name__", "go_gc_duration_seconds"},
|
||||
{"job", "prometheus"},
|
||||
{"quantile", "0.75"},
|
||||
},
|
||||
b: []Label{
|
||||
{"__name__", "go_gc_duration_seconds"},
|
||||
{"job", "prometheus"},
|
||||
{"quantile", "1"},
|
||||
},
|
||||
res: -1,
|
||||
},
|
||||
{
|
||||
a: []Label{
|
||||
{"handler", "prometheus"},
|
||||
{"instance", "localhost:9090"},
|
||||
},
|
||||
b: []Label{
|
||||
{"handler", "query"},
|
||||
{"instance", "localhost:9090"},
|
||||
},
|
||||
res: -1,
|
||||
},
|
||||
}
|
||||
for _, c := range cases {
|
||||
// Use constructor to ensure sortedness.
|
||||
a, b := New(c.a...), New(c.b...)
|
||||
|
||||
require.Equal(t, c.res, Compare(a, b))
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkLabelsSliceSort(b *testing.B) {
|
||||
f, err := os.Open("../cmd/tsdb/testdata.100k")
|
||||
require.NoError(b, err)
|
||||
|
||||
lbls, err := readPrometheusLabels(f, 5000)
|
||||
require.NoError(b, err)
|
||||
|
||||
b.Run("", func(b *testing.B) {
|
||||
clbls := make([]Labels, len(lbls))
|
||||
copy(clbls, lbls)
|
||||
|
||||
for i := range clbls {
|
||||
j := rand.Intn(i + 1)
|
||||
clbls[i], clbls[j] = clbls[j], clbls[i]
|
||||
}
|
||||
b.ResetTimer()
|
||||
b.ReportAllocs()
|
||||
|
||||
for i := 0; i < b.N; i++ {
|
||||
slice.Sort(clbls, func(i, j int) bool {
|
||||
return Compare(clbls[i], clbls[j]) < 0
|
||||
})
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
func readPrometheusLabels(r io.Reader, n int) ([]Labels, error) {
|
||||
dec := expfmt.NewDecoder(r, expfmt.FmtProtoText)
|
||||
|
||||
var mets []Labels
|
||||
var mf dto.MetricFamily
|
||||
|
||||
for i := 0; i < n; i++ {
|
||||
if err := dec.Decode(&mf); err != nil {
|
||||
if err == io.EOF {
|
||||
break
|
||||
}
|
||||
return nil, err
|
||||
}
|
||||
|
||||
for _, m := range mf.GetMetric() {
|
||||
met := make([]Label, 0, len(m.GetLabel())+1)
|
||||
met = append(met, Label{"__name__", mf.GetName()})
|
||||
|
||||
for _, l := range m.GetLabel() {
|
||||
met = append(met, Label{l.GetName(), l.GetValue()})
|
||||
}
|
||||
mets = append(mets, met)
|
||||
}
|
||||
}
|
||||
fmt.Println("read metrics", len(mets[:n]))
|
||||
|
||||
return mets[:n], nil
|
||||
}
|
||||
|
||||
func BenchmarkLabelSetFromMap(b *testing.B) {
|
||||
m := map[string]string{
|
||||
"job": "node",
|
||||
"instance": "123.123.1.211:9090",
|
||||
"path": "/api/v1/namespaces/<namespace>/deployments/<name>",
|
||||
"method": "GET",
|
||||
"namespace": "system",
|
||||
"status": "500",
|
||||
}
|
||||
var ls Labels
|
||||
b.ReportAllocs()
|
||||
|
||||
for i := 0; i < b.N; i++ {
|
||||
ls = FromMap(m)
|
||||
}
|
||||
_ = ls
|
||||
}
|
||||
|
||||
func BenchmarkMapFromLabels(b *testing.B) {
|
||||
m := map[string]string{
|
||||
"job": "node",
|
||||
"instance": "123.123.1.211:9090",
|
||||
"path": "/api/v1/namespaces/<namespace>/deployments/<name>",
|
||||
"method": "GET",
|
||||
"namespace": "system",
|
||||
"status": "500",
|
||||
}
|
||||
ls := FromMap(m)
|
||||
|
||||
b.ResetTimer()
|
||||
b.ReportAllocs()
|
||||
|
||||
for i := 0; i < b.N; i++ {
|
||||
m = ls.Map()
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkLabelSetEquals(b *testing.B) {
|
||||
// The vast majority of comparisons will be against a matching label set.
|
||||
m := map[string]string{
|
||||
"job": "node",
|
||||
"instance": "123.123.1.211:9090",
|
||||
"path": "/api/v1/namespaces/<namespace>/deployments/<name>",
|
||||
"method": "GET",
|
||||
"namespace": "system",
|
||||
"status": "500",
|
||||
}
|
||||
ls := FromMap(m)
|
||||
var res bool
|
||||
|
||||
b.ResetTimer()
|
||||
b.ReportAllocs()
|
||||
|
||||
for i := 0; i < b.N; i++ {
|
||||
res = ls.Equals(ls)
|
||||
}
|
||||
_ = res
|
||||
}
|
||||
Loading…
Reference in new issue