prometheus/head_bench_test.go
Brian Brazil b2d7bbd6b1
Move series fetches out of inner loop of SortedPostings. (#485)
With 1M series:

Before:
BenchmarkHeadPostingForMatchers-8              1        3501996117 ns/op 61311520 B/op         78 allocs/op

After:
BenchmarkHeadPostingForMatchers-8              1        1403072952 ns/op 69261568 B/op         72 allocs/op

This works out as 3X faster, as the above time includes other things.

Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>
2019-01-03 10:35:10 +00:00

73 lines
1.9 KiB
Go

// Copyright 2018 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 tsdb
import (
"strconv"
"sync/atomic"
"testing"
"github.com/prometheus/tsdb/labels"
"github.com/prometheus/tsdb/testutil"
)
func BenchmarkHeadStripeSeriesCreate(b *testing.B) {
// Put a series, select it. GC it and then access it.
h, err := NewHead(nil, nil, nil, 1000)
testutil.Ok(b, err)
defer h.Close()
for i := 0; i < b.N; i++ {
h.getOrCreate(uint64(i), labels.FromStrings("a", strconv.Itoa(i)))
}
}
func BenchmarkHeadStripeSeriesCreateParallel(b *testing.B) {
// Put a series, select it. GC it and then access it.
h, err := NewHead(nil, nil, nil, 1000)
testutil.Ok(b, err)
defer h.Close()
var count int64
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
i := atomic.AddInt64(&count, 1)
h.getOrCreate(uint64(i), labels.FromStrings("a", strconv.Itoa(int(i))))
}
})
}
// TODO: generalize benchmark and pass all postings for matchers here
func BenchmarkHeadPostingForMatchers(b *testing.B) {
// Put a series, select it. GC it and then access it.
h, err := NewHead(nil, nil, nil, 1000)
testutil.Ok(b, err)
defer h.Close()
// TODO: vary number of series
for i := 0; i < 1000000; i++ {
h.getOrCreate(uint64(i), labels.FromStrings("a", strconv.Itoa(i)))
}
b.ResetTimer()
all, _ := labels.NewRegexpMatcher("a", ".*")
for i := 0; i < b.N; i++ {
_, err := PostingsForMatchers(h.indexRange(0, 1000), all)
testutil.Ok(b, err)
}
}