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https://github.com/VictoriaMetrics/VictoriaMetrics.git
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b4bb1477fe
This increases relabeling performance by 3x for unoptimized regexs
33 lines
619 B
Go
33 lines
619 B
Go
package bytesutil
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import (
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"strings"
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"sync/atomic"
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"testing"
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)
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func BenchmarkFastStringMatcher(b *testing.B) {
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for _, s := range []string{"", "foo", "foo-bar-baz", "http_requests_total"} {
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b.Run(s, func(b *testing.B) {
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benchmarkFastStringMatcher(b, s)
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})
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}
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}
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func benchmarkFastStringMatcher(b *testing.B, s string) {
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fsm := NewFastStringMatcher(func(s string) bool {
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return strings.HasPrefix(s, "foo")
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})
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b.ReportAllocs()
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b.SetBytes(1)
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b.RunParallel(func(pb *testing.PB) {
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n := uint64(0)
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for pb.Next() {
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v := fsm.Match(s)
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if v {
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n++
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}
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}
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atomic.AddUint64(&GlobalSink, n)
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})
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}
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