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Remove microbenchmarks 

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>
pull/11746/head
Bryan Boreham 2 years ago
parent
66da1d51fd
commit
f34b2cede3
5 changed files with 0 additions and 398 deletions
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  1. 1
      go.mod
  2. 2
      go.sum
  3. 58
      tsdb/test/conv_test.go
  4. 123
      tsdb/test/hash_test.go
  5. 214
      tsdb/test/labels_test.go

1
go.mod
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@ -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
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@ -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
})
}
}
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