mirror of
https://github.com/prometheus/prometheus.git
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e5ac91222b
The one-off keys have been replaced with ``model.LabelPair``, which is indexable. The performance impact is negligible, but it represents a cognitive simplification.
96 lines
2.4 KiB
Go
96 lines
2.4 KiB
Go
// Copyright 2013 Prometheus Team
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package metric
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import (
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"fmt"
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"github.com/prometheus/prometheus/model"
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"runtime"
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"testing"
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"time"
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)
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func BenchmarkStreamAdd(b *testing.B) {
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b.StopTimer()
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s := newStream(model.Metric{})
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times := make([]time.Time, 0, b.N)
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samples := make([]model.SampleValue, 0, b.N)
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for i := 0; i < b.N; i++ {
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times = append(times, time.Date(i, 0, 0, 0, 0, 0, 0, time.UTC))
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samples = append(samples, model.SampleValue(i))
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}
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b.StartTimer()
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var pre runtime.MemStats
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runtime.ReadMemStats(&pre)
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for i := 0; i < b.N; i++ {
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s.add(times[i], samples[i])
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}
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var post runtime.MemStats
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runtime.ReadMemStats(&post)
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b.Logf("%d cycles with %f bytes per cycle, totalling %d", b.N, float32(post.TotalAlloc-pre.TotalAlloc)/float32(b.N), post.TotalAlloc-pre.TotalAlloc)
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}
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func benchmarkAppendSample(b *testing.B, labels int) {
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b.StopTimer()
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s := NewMemorySeriesStorage()
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metric := model.Metric{}
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for i := 0; i < labels; i++ {
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metric[model.LabelName(fmt.Sprintf("label_%d", i))] = model.LabelValue(fmt.Sprintf("value_%d", i))
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}
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samples := make(model.Samples, 0, b.N)
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for i := 0; i < b.N; i++ {
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samples = append(samples, model.Sample{
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Metric: metric,
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Value: model.SampleValue(i),
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Timestamp: time.Date(i, 0, 0, 0, 0, 0, 0, time.UTC),
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})
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}
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b.StartTimer()
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var pre runtime.MemStats
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runtime.ReadMemStats(&pre)
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for i := 0; i < b.N; i++ {
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s.AppendSample(samples[i])
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}
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var post runtime.MemStats
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runtime.ReadMemStats(&post)
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b.Logf("%d cycles with %f bytes per cycle, totalling %d", b.N, float32(post.TotalAlloc-pre.TotalAlloc)/float32(b.N), post.TotalAlloc-pre.TotalAlloc)
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}
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func BenchmarkAppendSample1(b *testing.B) {
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benchmarkAppendSample(b, 1)
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}
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func BenchmarkAppendSample10(b *testing.B) {
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benchmarkAppendSample(b, 10)
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}
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func BenchmarkAppendSample100(b *testing.B) {
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benchmarkAppendSample(b, 100)
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}
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func BenchmarkAppendSample1000(b *testing.B) {
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benchmarkAppendSample(b, 1000)
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}
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