forked from mirror/client_golang
105 lines
2.4 KiB
Go
105 lines
2.4 KiB
Go
// Copyright 2013 Prometheus Team
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package model
|
|
|
|
import (
|
|
"runtime"
|
|
"testing"
|
|
)
|
|
|
|
func TestFingerprintComparison(t *testing.T) {
|
|
fingerprints := []*Fingerprint{
|
|
{
|
|
Hash: 0,
|
|
FirstCharacterOfFirstLabelName: "b",
|
|
LabelMatterLength: 1,
|
|
LastCharacterOfLastLabelValue: "b",
|
|
},
|
|
{
|
|
Hash: 1,
|
|
FirstCharacterOfFirstLabelName: "a",
|
|
LabelMatterLength: 0,
|
|
LastCharacterOfLastLabelValue: "a",
|
|
},
|
|
{
|
|
Hash: 1,
|
|
FirstCharacterOfFirstLabelName: "a",
|
|
LabelMatterLength: 1000,
|
|
LastCharacterOfLastLabelValue: "b",
|
|
},
|
|
{
|
|
Hash: 1,
|
|
FirstCharacterOfFirstLabelName: "b",
|
|
LabelMatterLength: 0,
|
|
LastCharacterOfLastLabelValue: "a",
|
|
},
|
|
{
|
|
Hash: 1,
|
|
FirstCharacterOfFirstLabelName: "b",
|
|
LabelMatterLength: 1,
|
|
LastCharacterOfLastLabelValue: "a",
|
|
},
|
|
{
|
|
Hash: 1,
|
|
FirstCharacterOfFirstLabelName: "b",
|
|
LabelMatterLength: 1,
|
|
LastCharacterOfLastLabelValue: "b",
|
|
},
|
|
}
|
|
for i := range fingerprints {
|
|
if i == 0 {
|
|
continue
|
|
}
|
|
|
|
if !fingerprints[i-1].Less(fingerprints[i]) {
|
|
t.Errorf("%d expected %s < %s", i, fingerprints[i-1], fingerprints[i])
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkFingerprinting(b *testing.B) {
|
|
b.StopTimer()
|
|
fps := []*Fingerprint{
|
|
{
|
|
Hash: 0,
|
|
FirstCharacterOfFirstLabelName: "a",
|
|
LabelMatterLength: 2,
|
|
LastCharacterOfLastLabelValue: "z",
|
|
},
|
|
{
|
|
Hash: 0,
|
|
FirstCharacterOfFirstLabelName: "a",
|
|
LabelMatterLength: 2,
|
|
LastCharacterOfLastLabelValue: "z",
|
|
},
|
|
}
|
|
for i := 0; i < 10; i++ {
|
|
fps[0].Less(fps[1])
|
|
}
|
|
b.Logf("N: %v", b.N)
|
|
b.StartTimer()
|
|
|
|
var pre runtime.MemStats
|
|
runtime.ReadMemStats(&pre)
|
|
|
|
for i := 0; i < b.N; i++ {
|
|
fps[0].Less(fps[1])
|
|
}
|
|
|
|
var post runtime.MemStats
|
|
runtime.ReadMemStats(&post)
|
|
|
|
b.Logf("allocs: %d items: ", post.TotalAlloc-pre.TotalAlloc)
|
|
}
|