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Remove microbenchmarks

Browse Source 
These benchmarks are all testing things related to what Prometheus does,
so perhaps have some historical interest, but we should not retain them
in the main repo.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
This commit is contained in:
Bryan Boreham 2022-12-20 15:26:17 +00:00
parent 66da1d51fd
commit f34b2cede3
5 changed files with 0 additions and 398 deletions
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1
go.mod
View File

@ -10,7 +10,6 @@ require (
github.com/aws/aws-sdk-go v1.44.187
github.com/cespare/xxhash/v2 v2.2.0
github.com/dennwc/varint v1.0.0
github.com/dgryski/go-sip13 v0.0.0-20200911182023-62edffca9245
github.com/digitalocean/godo v1.95.0
github.com/docker/docker v20.10.23+incompatible
github.com/edsrzf/mmap-go v1.1.0

2
go.sum
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@ -148,8 +148,6 @@ github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
github.com/dennwc/varint v1.0.0 h1:kGNFFSSw8ToIy3obO/kKr8U9GZYUAxQEVuix4zfDWzE=
github.com/dennwc/varint v1.0.0/go.mod h1:hnItb35rvZvJrbTALZtY/iQfDs48JKRG1RPpgziApxA=
github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
github.com/dgryski/go-sip13 v0.0.0-20200911182023-62edffca9245 h1:9cOfvEwjQxdwKuNDTQSaMKNRvwKwgZG+U4HrjeRKHso=
github.com/dgryski/go-sip13 v0.0.0-20200911182023-62edffca9245/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
github.com/digitalocean/godo v1.95.0 h1:S48/byPKui7RHZc1wYEPfRvkcEvToADNb5I3guu95xg=
github.com/digitalocean/godo v1.95.0/go.mod h1:NRpFznZFvhHjBoqZAaOD3khVzsJ3EibzKqFL4R60dmA=
github.com/dnaeon/go-vcr v1.2.0 h1:zHCHvJYTMh1N7xnV7zf1m1GPBF9Ad0Jk/whtQ1663qI=

58
tsdb/test/conv_test.go
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@ -1,58 +0,0 @@
// Copyright 2017 The Prometheus Authors
// 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 test
import "testing"
func BenchmarkMapConversion(b *testing.B) {
type key string
type val string
m := map[key]val{
"job": "node",
"instance": "123.123.1.211:9090",
"path": "/api/v1/namespaces/<namespace>/deployments/<name>",
"method": "GET",
"namespace": "system",
"status": "500",
}
var sm map[string]string
for i := 0; i < b.N; i++ {
sm = make(map[string]string, len(m))
for k, v := range m {
sm[string(k)] = string(v)
}
}
}
func BenchmarkListIter(b *testing.B) {
var list []uint32
for i := 0; i < 1e4; i++ {
list = append(list, uint32(i))
}
b.ResetTimer()
total := uint32(0)
for j := 0; j < b.N; j++ {
sum := uint32(0)
for _, k := range list {
sum += k
}
total += sum
}
}

123
tsdb/test/hash_test.go
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@ -1,123 +0,0 @@
// Copyright 2017 The Prometheus Authors
// 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 test
import (
"crypto/rand"
"fmt"
"hash/crc32"
"testing"
"github.com/cespare/xxhash/v2"
sip13 "github.com/dgryski/go-sip13"
)
type pair struct {
name, value string
}
var testInput = []pair{
{"job", "node"},
{"instance", "123.123.1.211:9090"},
{"path", "/api/v1/namespaces/<namespace>/deployments/<name>"},
{"method", "GET"},
{"namespace", "system"},
{"status", "500"},
}
func BenchmarkHash(b *testing.B) {
input := []byte{}
for _, v := range testInput {
input = append(input, v.name...)
input = append(input, '\xff')
input = append(input, v.value...)
input = append(input, '\xff')
}
var total uint64
var k0 uint64 = 0x0706050403020100
var k1 uint64 = 0x0f0e0d0c0b0a0908
for name, f := range map[string]func(b []byte) uint64{
"xxhash": xxhash.Sum64,
"fnv64": fnv64a,
"sip13": func(b []byte) uint64 { return sip13.Sum64(k0, k1, b) },
} {
b.Run(name, func(b *testing.B) {
b.SetBytes(int64(len(input)))
total = 0
for i := 0; i < b.N; i++ {
total += f(input)
}
})
}
}
// hashAdd adds a string to a fnv64a hash value, returning the updated hash.
func fnv64a(b []byte) uint64 {
const (
offset64 = 14695981039346656037
prime64 = 1099511628211
)
h := uint64(offset64)
for x := range b {
h ^= uint64(x)
h *= prime64
}
return h
}
func BenchmarkCRC32_diff(b *testing.B) {
data := [][]byte{}
for i := 0; i < 1000; i++ {
b := make([]byte, 512)
rand.Read(b)
data = append(data, b)
}
ctab := crc32.MakeTable(crc32.Castagnoli)
total := uint32(0)
b.Run("direct", func(b *testing.B) {
b.ReportAllocs()
for i := 0; i < b.N; i++ {
total += crc32.Checksum(data[i%1000], ctab)
}
})
b.Run("hash-reuse", func(b *testing.B) {
b.ReportAllocs()
h := crc32.New(ctab)
for i := 0; i < b.N; i++ {
h.Reset()
h.Write(data[i%1000])
total += h.Sum32()
}
})
b.Run("hash-new", func(b *testing.B) {
b.ReportAllocs()
for i := 0; i < b.N; i++ {
h := crc32.New(ctab)
h.Write(data[i%1000])
total += h.Sum32()
}
})
fmt.Println(total)
}

214
tsdb/test/labels_test.go
View File

@ -1,214 +0,0 @@
// Copyright 2017 The Prometheus Authors
// 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 test
import (
"bytes"
"crypto/rand"
"testing"
"github.com/prometheus/prometheus/model/labels"
)
func BenchmarkMapClone(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",
"prometheus": "prometheus-core-1",
"datacenter": "eu-west-1",
"pod_name": "abcdef-99999-defee",
}
for i := 0; i < b.N; i++ {
res := make(map[string]string, len(m))
for k, v := range m {
res[k] = v
}
m = res
}
}
func BenchmarkLabelsClone(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",
"prometheus": "prometheus-core-1",
"datacenter": "eu-west-1",
"pod_name": "abcdef-99999-defee",
}
l := labels.FromMap(m)
for i := 0; i < b.N; i++ {
l = l.Copy()
}
}
func BenchmarkLabelMapAccess(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",
"prometheus": "prometheus-core-1",
"datacenter": "eu-west-1",
"pod_name": "abcdef-99999-defee",
}
var v string
for k := range m {
b.Run(k, func(b *testing.B) {
for i := 0; i < b.N; i++ {
v = m[k]
}
})
}
_ = v
}
func BenchmarkLabelSetAccess(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",
"prometheus": "prometheus-core-1",
"datacenter": "eu-west-1",
"pod_name": "abcdef-99999-defee",
}
ls := labels.FromMap(m)
var v string
ls.Range(func(l labels.Label) {
b.Run(l.Name, func(b *testing.B) {
for i := 0; i < b.N; i++ {
v = ls.Get(l.Name)
}
})
})
_ = v
}
func BenchmarkStringBytesEquals(b *testing.B) {
randBytes := func(n int) ([]byte, []byte) {
buf1 := make([]byte, n)
if _, err := rand.Read(buf1); err != nil {
b.Fatal(err)
}
buf2 := make([]byte, n)
copy(buf1, buf2)
return buf1, buf2
}
cases := []struct {
name string
f func() ([]byte, []byte)
}{
{
name: "equal",
f: func() ([]byte, []byte) {
return randBytes(60)
},
},
{
name: "1-flip-end",
f: func() ([]byte, []byte) {
b1, b2 := randBytes(60)
b2[59] ^= b2[59]
return b1, b2
},
},
{
name: "1-flip-middle",
f: func() ([]byte, []byte) {
b1, b2 := randBytes(60)
b2[29] ^= b2[29]
return b1, b2
},
},
{
name: "1-flip-start",
f: func() ([]byte, []byte) {
b1, b2 := randBytes(60)
b2[0] ^= b2[0]
return b1, b2
},
},
{
name: "different-length",
f: func() ([]byte, []byte) {
b1, b2 := randBytes(60)
return b1, b2[:59]
},
},
}
for _, c := range cases {
b.Run(c.name+"-strings", func(b *testing.B) {
ab, bb := c.f()
as, bs := string(ab), string(bb)
b.SetBytes(int64(len(as)))
var r bool
for i := 0; i < b.N; i++ {
r = as == bs
}
_ = r
})
b.Run(c.name+"-bytes", func(b *testing.B) {
ab, bb := c.f()
b.SetBytes(int64(len(ab)))
var r bool
for i := 0; i < b.N; i++ {
r = bytes.Equal(ab, bb)
}
_ = r
})
b.Run(c.name+"-bytes-length-check", func(b *testing.B) {
ab, bb := c.f()
b.SetBytes(int64(len(ab)))
var r bool
for i := 0; i < b.N; i++ {
if len(ab) != len(bb) {
continue
}
r = bytes.Equal(ab, bb)
}
_ = r
})
}
}