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a571c52b0a
Update to new stdlib apis. The new Float64 is uniform, which resolves a long comment. https://cs.opensource.google/go/go/+/refs/tags/go1.24.2:src/math/rand/v2/rand.go;l=209 > // There are exactly 1<<53 float64s in [0,1). Use Intn(1<<53) / (1<<53). return float64(r.Uint64()<<11>>11) / (1 << 53) ``` goos: linux goarch: amd64 pkg: go.opentelemetry.io/otel/sdk/trace cpu: 12th Gen Intel(R) Core(TM) i7-1260P │ old.txt │ new.txt │ │ sec/op │ sec/op vs base │ TraceStart/with_a_simple_span-16 387.1n ± 5% 306.8n ± 15% -20.73% (p=0.000 n=10) TraceStart/with_several_links-16 542.2n ± 5% 501.0n ± 2% -7.61% (p=0.000 n=10) TraceStart/with_attributes-16 521.4n ± 14% 571.6n ± 6% +9.64% (p=0.009 n=10) geomean 478.3n 444.6n -7.05% │ old.txt │ new.txt │ │ B/op │ B/op vs base │ TraceStart/with_a_simple_span-16 528.0 ± 0% 528.0 ± 0% ~ (p=1.000 n=10) ¹ TraceStart/with_several_links-16 704.0 ± 0% 704.0 ± 0% ~ (p=1.000 n=10) ¹ TraceStart/with_attributes-16 784.0 ± 0% 784.0 ± 0% ~ (p=1.000 n=10) ¹ geomean 663.0 663.0 +0.00% ¹ all samples are equal │ old.txt │ new.txt │ │ allocs/op │ allocs/op vs base │ TraceStart/with_a_simple_span-16 2.000 ± 0% 2.000 ± 0% ~ (p=1.000 n=10) ¹ TraceStart/with_several_links-16 3.000 ± 0% 3.000 ± 0% ~ (p=1.000 n=10) ¹ TraceStart/with_attributes-16 4.000 ± 0% 4.000 ± 0% ~ (p=1.000 n=10) ¹ geomean 2.884 2.884 +0.00% ¹ all samples are equal ``` --------- Co-authored-by: Robert Pająk <pellared@hotmail.com> Co-authored-by: Damien Mathieu <42@dmathieu.com>
79 lines
1.5 KiB
Go
79 lines
1.5 KiB
Go
// Copyright The OpenTelemetry Authors
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// SPDX-License-Identifier: Apache-2.0
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package resource_test
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import (
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"fmt"
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"math/rand/v2"
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"testing"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/sdk/resource"
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)
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const conflict = 0.5
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func makeAttrs(n int) (_, _ *resource.Resource) {
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used := map[string]bool{}
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l1 := make([]attribute.KeyValue, n)
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l2 := make([]attribute.KeyValue, n)
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for i := 0; i < n; i++ {
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var k string
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for {
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k = fmt.Sprint("k", rand.IntN(1000000000))
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if !used[k] {
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used[k] = true
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break
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}
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}
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l1[i] = attribute.String(k, fmt.Sprint("v", rand.IntN(1000000000)))
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if rand.Float64() < conflict {
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l2[i] = l1[i]
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} else {
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l2[i] = attribute.String(k, fmt.Sprint("v", rand.IntN(1000000000)))
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}
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}
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return resource.NewSchemaless(l1...), resource.NewSchemaless(l2...)
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}
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func benchmarkMergeResource(b *testing.B, size int) {
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r1, r2 := makeAttrs(size)
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b.ReportAllocs()
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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_, _ = resource.Merge(r1, r2)
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}
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}
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func BenchmarkMergeResource_1(b *testing.B) {
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benchmarkMergeResource(b, 1)
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}
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func BenchmarkMergeResource_2(b *testing.B) {
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benchmarkMergeResource(b, 2)
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}
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func BenchmarkMergeResource_3(b *testing.B) {
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benchmarkMergeResource(b, 3)
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}
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func BenchmarkMergeResource_4(b *testing.B) {
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benchmarkMergeResource(b, 4)
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}
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func BenchmarkMergeResource_6(b *testing.B) {
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benchmarkMergeResource(b, 6)
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}
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func BenchmarkMergeResource_8(b *testing.B) {
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benchmarkMergeResource(b, 8)
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}
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func BenchmarkMergeResource_16(b *testing.B) {
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benchmarkMergeResource(b, 16)
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}
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