mirror of
https://github.com/prometheus/prometheus.git
synced 2024-09-20 07:47:31 -07:00
88 lines
2 KiB
Go
88 lines
2 KiB
Go
// Copyright 2017 The Prometheus Authors
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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 tsdb
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import (
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"io/ioutil"
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"os"
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"testing"
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"unsafe"
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"github.com/pkg/errors"
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"github.com/prometheus/tsdb/labels"
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promlabels "github.com/prometheus/prometheus/pkg/labels"
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"github.com/prometheus/prometheus/pkg/textparse"
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"github.com/stretchr/testify/require"
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)
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func BenchmarkCreateSeries(b *testing.B) {
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lbls, err := readPrometheusLabels("cmd/tsdb/testdata.1m", 1e6)
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require.NoError(b, err)
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b.Run("", func(b *testing.B) {
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dir, err := ioutil.TempDir("", "create_series_bench")
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require.NoError(b, err)
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defer os.RemoveAll(dir)
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h, err := createHeadBlock(dir, 0, nil, 0, 1)
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require.NoError(b, err)
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b.ReportAllocs()
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b.ResetTimer()
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for _, l := range lbls[:b.N] {
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h.create(l.Hash(), l)
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}
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})
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}
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func readPrometheusLabels(fn string, n int) ([]labels.Labels, error) {
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f, err := os.Open(fn)
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if err != nil {
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return nil, err
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}
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defer f.Close()
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b, err := ioutil.ReadAll(f)
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if err != nil {
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return nil, err
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}
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p := textparse.New(b)
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i := 0
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var mets []labels.Labels
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hashes := map[uint64]struct{}{}
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for p.Next() && i < n {
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m := make(labels.Labels, 0, 10)
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p.Metric((*promlabels.Labels)(unsafe.Pointer(&m)))
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h := m.Hash()
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if _, ok := hashes[h]; ok {
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continue
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}
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mets = append(mets, m)
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hashes[h] = struct{}{}
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i++
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}
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if err := p.Err(); err != nil {
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return nil, err
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}
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if i != n {
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return mets, errors.Errorf("requested %d metrics but found %d", n, i)
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}
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return mets, nil
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}
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