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statsd_exporter/pkg/mapper/mapper_benchmark_test.go
glightfoot 8b306c8c76 remove noop cache, add helper function for tests 
Signed-off-by: glightfoot <glightfoot@rsglab.com>
2021-02-19 14:08:53 -05:00

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// Copyright 2013 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 mapper
import (
"fmt"
"math/rand"
"testing"
"github.com/prometheus/statsd_exporter/pkg/mappercache/lru"
"github.com/prometheus/statsd_exporter/pkg/mappercache/randomreplacement"
)
var (
ruleTemplateSingleMatchGlob = `
- match: metric%d.*
name: "metric_single"
labels:
name: "$1"
`
ruleTemplateSingleMatchRegex = `
- match: metric%d\.([^.]*)
name: "metric_single"
labels:
name: "$1"
`
ruleTemplateMultipleMatchGlob = `
- match: metric%d.*.*.*.*.*.*.*.*.*.*.*.*
name: "metric_multi"
labels:
name: "$1-$2-$3.$4-$5-$6.$7-$8-$9.$10-$11-$12"
`
ruleTemplateMultipleMatchRegex = `
- match: metric%d\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)
name: "metric_multi"
labels:
name: "$1-$2-$3.$4-$5-$6.$7-$8-$9.$10-$11-$12"
`
)
func duplicateRules(count int, template string) string {
rules := ""
for i := 0; i < count; i++ {
rules += fmt.Sprintf(template, i)
}
return rules
}
func BenchmarkGlob(b *testing.B) {
config := `---
mappings:
- match: test.dispatcher.*.*.succeeded
name: "dispatch_events"
labels:
processor: "$1"
action: "$2"
result: "succeeded"
job: "test_dispatcher"
- match: test.my-dispatch-host01.name.dispatcher.*.*.*
name: "host_dispatch_events"
labels:
processor: "$1"
action: "$2"
result: "$3"
job: "test_dispatcher"
- match: request_time.*.*.*.*.*.*.*.*.*.*.*.*
name: "tyk_http_request"
labels:
method_and_path: "${1}"
response_code: "${2}"
apikey: "${3}"
apiversion: "${4}"
apiname: "${5}"
apiid: "${6}"
ipv4_t1: "${7}"
ipv4_t2: "${8}"
ipv4_t3: "${9}"
ipv4_t4: "${10}"
orgid: "${11}"
oauthid: "${12}"
- match: "*.*"
name: "catchall"
labels:
first: "$1"
second: "$2"
third: "$3"
job: "-"
`
mappings := []string{
"test.dispatcher.FooProcessor.send.succeeded",
"test.my-dispatch-host01.name.dispatcher.FooProcessor.send.succeeded",
"request_time.get/threads/1/posts.200.00000000.nonversioned.discussions.a11bbcdf0ac64ec243658dc64b7100fb.172.20.0.1.12ba97b7eaa1a50001000001.",
"foo.bar",
"foo.bar.baz",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkGlobNoOrdering(b *testing.B) {
config := `---
defaults:
glob_disable_ordering: true
mappings:
- match: test.dispatcher.*.*.succeeded
name: "dispatch_events"
labels:
processor: "$1"
action: "$2"
result: "succeeded"
job: "test_dispatcher"
- match: test.my-dispatch-host01.name.dispatcher.*.*.*
name: "host_dispatch_events"
labels:
processor: "$1"
action: "$2"
result: "$3"
job: "test_dispatcher"
- match: request_time.*.*.*.*.*.*.*.*.*.*.*.*
name: "tyk_http_request"
labels:
method_and_path: "${1}"
response_code: "${2}"
apikey: "${3}"
apiversion: "${4}"
apiname: "${5}"
apiid: "${6}"
ipv4_t1: "${7}"
ipv4_t2: "${8}"
ipv4_t3: "${9}"
ipv4_t4: "${10}"
orgid: "${11}"
oauthid: "${12}"
- match: "*.*"
name: "catchall"
labels:
first: "$1"
second: "$2"
third: "$3"
job: "-"
`
mappings := []string{
"test.dispatcher.FooProcessor.send.succeeded",
"test.my-dispatch-host01.name.dispatcher.FooProcessor.send.succeeded",
"request_time.get/threads/1/posts.200.00000000.nonversioned.discussions.a11bbcdf0ac64ec243658dc64b7100fb.172.20.0.1.12ba97b7eaa1a50001000001.",
"foo.bar",
"foo.bar.baz",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkGlobNoOrderingWithBacktracking(b *testing.B) {
config := `---
defaults:
glob_disable_ordering: true
mappings:
- match: test.dispatcher.*.*.succeeded
name: "dispatch_events"
labels:
processor: "$1"
action: "$2"
result: "succeeded"
job: "test_dispatcher"
- match: test.dispatcher.*.received.*
name: "dispatch_events_wont_match"
labels:
processor: "$1"
action: "received"
result: "$2"
job: "test_dispatcher"
- match: test.my-dispatch-host01.name.dispatcher.*.*.*
name: "host_dispatch_events"
labels:
processor: "$1"
action: "$2"
result: "$3"
job: "test_dispatcher"
- match: request_time.*.*.*.*.*.*.*.*.*.*.*.*
name: "tyk_http_request"
labels:
method_and_path: "${1}"
response_code: "${2}"
apikey: "${3}"
apiversion: "${4}"
apiname: "${5}"
apiid: "${6}"
ipv4_t1: "${7}"
ipv4_t2: "${8}"
ipv4_t3: "${9}"
ipv4_t4: "${10}"
orgid: "${11}"
oauthid: "${12}"
- match: "*.*"
name: "catchall"
labels:
first: "$1"
second: "$2"
third: "$3"
job: "-"
`
mappings := []string{
"test.dispatcher.FooProcessor.send.succeeded",
"test.my-dispatch-host01.name.dispatcher.FooProcessor.send.succeeded",
"request_time.get/threads/1/posts.200.00000000.nonversioned.discussions.a11bbcdf0ac64ec243658dc64b7100fb.172.20.0.1.12ba97b7eaa1a50001000001.",
"foo.bar",
"foo.bar.baz",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkRegex(b *testing.B) {
config := `---
defaults:
match_type: regex
mappings:
- match: test\.dispatcher\.([^.]*)\.([^.]*)\.([^.]*)
name: "dispatch_events"
labels:
processor: "$1"
action: "$2"
result: "$3"
job: "test_dispatcher"
- match: test.my-dispatch-host01.name.dispatcher\.([^.]*)\.([^.]*)\.([^.]*)
name: "host_dispatch_events"
labels:
processor: "$1"
action: "$2"
result: "$3"
job: "test_dispatcher"
- match: request_time\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)
name: "tyk_http_request"
labels:
method_and_path: "${1}"
response_code: "${2}"
apikey: "${3}"
apiversion: "${4}"
apiname: "${5}"
apiid: "${6}"
ipv4_t1: "${7}"
ipv4_t2: "${8}"
ipv4_t3: "${9}"
ipv4_t4: "${10}"
orgid: "${11}"
oauthid: "${12}"
- match: \.([^.]*)\.([^.]*)
name: "catchall"
labels:
first: "$1"
second: "$2"
third: "$3"
job: "-"
`
mappings := []string{
"test.dispatcher.FooProcessor.send.succeeded",
"test.my-dispatch-host01.name.dispatcher.FooProcessor.send.succeeded",
"request_time.get/threads/1/posts.200.00000000.nonversioned.discussions.a11bbcdf0ac64ec243658dc64b7100fb.172.20.0.1.12ba97b7eaa1a50001000001.",
"foo.bar",
"foo.bar.baz",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkGlobSingleMatch(b *testing.B) {
config := `---
mappings:
- match: metric.*
name: "metric_one"
labels:
name: "$1"
`
mappings := []string{
"metric.aaa",
"metric.bbb",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkRegexSingleMatch(b *testing.B) {
config := `---
mappings:
- match: metric\.([^.]*)
name: "metric_one"
match_type: regex
labels:
name: "$1"
`
mappings := []string{
"metric.aaa",
"metric.bbb",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkGlobMultipleCaptures(b *testing.B) {
config := `---
mappings:
- match: metric.*.*.*.*.*.*.*.*.*.*.*.*
name: "metric_multi"
labels:
name: "$1-$2-$3.$4-$5-$6.$7-$8-$9.$10-$11-$12"
`
mappings := []string{
"metric.a.b.c.d.e.f.g.h.i.j.k.l",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkRegexMultipleCaptures(b *testing.B) {
config := `---
mappings:
- match: metric\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)
name: "metric_multi"
match_type: regex
labels:
name: "$1-$2-$3.$4-$5-$6.$7-$8-$9.$10-$11-$12"
`
mappings := []string{
"metric.a.b.c.d.e.f.g.h.i.j.k.l",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkGlobMultipleCapturesNoFormat(b *testing.B) {
config := `---
mappings:
- match: metric.*.*.*.*.*.*.*.*.*.*.*.*
name: "metric_multi"
labels:
name: "not_relevant"
`
mappings := []string{
"metric.a.b.c.d.e.f.g.h.i.j.k.l",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkRegexMultipleCapturesNoFormat(b *testing.B) {
config := `---
mappings:
- match: metric\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)
name: "metric_multi"
match_type: regex
labels:
name: "not_relevant"
`
mappings := []string{
"metric.a.b.c.d.e.f.g.h.i.j.k.l",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkGlobMultipleCapturesDifferentLabels(b *testing.B) {
config := `---
mappings:
- match: metric.*.*.*.*.*.*.*.*.*.*.*.*
name: "metric_multi"
labels:
label1: "$1"
label2: "$2"
label3: "$3"
label4: "$4"
label5: "$5"
label6: "$6"
label7: "$7"
label8: "$8"
label9: "$9"
label10: "$10"
label11: "$11"
label12: "$12"
`
mappings := []string{
"metric.a.b.c.d.e.f.g.h.i.j.k.l",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkRegexMultipleCapturesDifferentLabels(b *testing.B) {
config := `---
mappings:
- match: metric\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)\.([^.]*)
name: "metric_multi"
match_type: regex
labels:
label1: "$1"
label2: "$2"
label3: "$3"
label4: "$4"
label5: "$5"
label6: "$6"
label7: "$7"
label8: "$8"
label9: "$9"
label10: "$10"
label11: "$11"
label12: "$12"
`
mappings := []string{
"metric.a.b.c.d.e.f.g.h.i.j.k.l",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkGlob10Rules(b *testing.B) {
config := `---
mappings:` + duplicateRules(100, ruleTemplateSingleMatchGlob)
mappings := []string{
"metric100.a",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkGlob10RulesCached(b *testing.B) {
config := `---
mappings:` + duplicateRules(100, ruleTemplateSingleMatchGlob)
mappings := []string{
"metric100.a",
}
for _, cacheType := range []string{"lru", "random"} {
mapper := newTestMapperWithCache(cacheType, 1000)
b.Run(cacheType, func(b *testing.B) {
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
})
}
}
func BenchmarkRegex10RulesAverage(b *testing.B) {
config := `---
defaults:
match_type: regex
mappings:` + duplicateRules(10, ruleTemplateSingleMatchRegex)
mappings := []string{
"metric5.a",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkRegex10RulesAverageCached(b *testing.B) {
config := `---
defaults:
match_type: regex
mappings:` + duplicateRules(10, ruleTemplateSingleMatchRegex)
mappings := []string{
"metric5.a",
}
for _, cacheType := range []string{"lru", "random"} {
mapper := MetricMapper{}
var cache MetricMapperCache
switch cacheType {
case "lru":
cache, _ = lru.NewMetricMapperLRUCache(mapper.Registerer, 1000)
case "random":
cache, _ = randomreplacement.NewMetricMapperRRCache(mapper.Registerer, 1000)
}
mapper.UseCache(cache)
b.Run(cacheType, func(b *testing.B) {
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
})
}
}
func BenchmarkGlob100Rules(b *testing.B) {
config := `---
mappings:` + duplicateRules(100, ruleTemplateSingleMatchGlob)
mappings := []string{
"metric100.a",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkGlob100RulesCached(b *testing.B) {
config := `---
mappings:` + duplicateRules(100, ruleTemplateSingleMatchGlob)
mappings := []string{
"metric100.a",
}
for _, cacheType := range []string{"lru", "random"} {
mapper := newTestMapperWithCache(cacheType, 1000)
b.Run(cacheType, func(b *testing.B) {
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
})
}
}
func BenchmarkGlob100RulesNoMatch(b *testing.B) {
config := `---
mappings:` + duplicateRules(100, ruleTemplateSingleMatchGlob)
mappings := []string{
"metricnomatchy.a",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkGlob100RulesNoOrderingNoMatch(b *testing.B) {
config := `---
defaults:
glob_disable_ordering: true
mappings:` + duplicateRules(100, ruleTemplateSingleMatchGlob)
mappings := []string{
"metricnomatchy.a",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkRegex100RulesAverage(b *testing.B) {
config := `---
defaults:
match_type: regex
mappings:` + duplicateRules(100, ruleTemplateSingleMatchRegex)
mappings := []string{
"metric50.a",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkRegex100RulesWorst(b *testing.B) {
config := `---
defaults:
match_type: regex
mappings:` + duplicateRules(100, ruleTemplateSingleMatchRegex)
mappings := []string{
"metric100.a",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkGlob100RulesMultipleCaptures(b *testing.B) {
config := `---
mappings:` + duplicateRules(100, ruleTemplateMultipleMatchGlob)
mappings := []string{
"metric50.a.b.c.d.e.f.g.h.i.j.k.l",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkGlob100RulesMultipleCapturesCached(b *testing.B) {
config := `---
mappings:` + duplicateRules(100, ruleTemplateMultipleMatchGlob)
mappings := []string{
"metric50.a.b.c.d.e.f.g.h.i.j.k.l",
}
for _, cacheType := range []string{"lru", "random"} {
mapper := newTestMapperWithCache(cacheType, 1000)
b.Run(cacheType, func(b *testing.B) {
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
})
}
}
func BenchmarkRegex100RulesMultipleCapturesAverage(b *testing.B) {
config := `---
defaults:
match_type: regex
mappings:` + duplicateRules(100, ruleTemplateMultipleMatchRegex)
mappings := []string{
"metric50.a.b.c.d.e.f.g.h.i.j.k.l",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkRegex100RulesMultipleCapturesWorst(b *testing.B) {
config := `---
defaults:
match_type: regex
mappings:` + duplicateRules(100, ruleTemplateMultipleMatchRegex)
mappings := []string{
"metric100.a.b.c.d.e.f.g.h.i.j.k.l",
}
mapper := MetricMapper{}
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
}
func BenchmarkRegex100RulesMultipleCapturesWorstCached(b *testing.B) {
config := `---
defaults:
match_type: regex
mappings:` + duplicateRules(100, ruleTemplateMultipleMatchRegex)
mappings := []string{
"metric100.a.b.c.d.e.f.g.h.i.j.k.l",
}
for _, cacheType := range []string{"lru", "random"} {
mapper := newTestMapperWithCache(cacheType, 1000)
b.Run(cacheType, func(b *testing.B) {
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
})
}
}
func duplicateMetrics(count int, template string) []string {
var out []string
for i := 0; i < count; i++ {
out = append(out, fmt.Sprintf(template, i))
}
return out
}
func BenchmarkGlob100RulesCached100Metrics(b *testing.B) {
config := `---
mappings:` + duplicateRules(101, ruleTemplateSingleMatchGlob)
mappings := duplicateMetrics(100, "metric100")
for _, cacheType := range []string{"lru", "random"} {
mapper := newTestMapperWithCache(cacheType, 1000)
b.Run(cacheType, func(b *testing.B) {
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
})
}
}
func BenchmarkGlob100RulesCached100MetricsSmallCache(b *testing.B) {
// This benchmark is the worst case for the LRU cache.
// The cache is smaller than the total number of metrics and
// we iterate linearly through the metrics, so we will
// constantly evict cache entries.
config := `---
mappings:` + duplicateRules(100, ruleTemplateSingleMatchGlob)
mappings := duplicateMetrics(100, "metric100")
for _, cacheType := range []string{"lru", "random"} {
mapper := newTestMapperWithCache(cacheType, 1000)
b.Run(cacheType, func(b *testing.B) {
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
})
}
}
func BenchmarkGlob100RulesCached100MetricsRandomSmallCache(b *testing.B) {
// Slighly more realistic benchmark with a smaller cache.
// Randomly match metrics so we should have some cache hits.
config := `---
mappings:` + duplicateRules(100, ruleTemplateSingleMatchGlob)
base := duplicateMetrics(100, "metric100")
var mappings []string
for i := 0; i < 10; i++ {
mappings = append(mappings, base...)
}
r := rand.New(rand.NewSource(42))
r.Shuffle(len(mappings), func(i, j int) {
mappings[i], mappings[j] = mappings[j], mappings[i]
})
for _, cacheType := range []string{"lru", "random"} {
mapper := newTestMapperWithCache(cacheType, 50)
b.Run(cacheType, func(b *testing.B) {
err := mapper.InitFromYAMLString(config)
if err != nil {
b.Fatalf("Config load error: %s %s", config, err)
}
b.ResetTimer()
for j := 0; j < b.N; j++ {
for _, metric := range mappings {
mapper.GetMapping(metric, MetricTypeCounter)
}
}
})
}
}
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