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https://github.com/prometheus/prometheus.git
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b4132df5f7
Some benchmarks for HEAD and allocate the correct slice size in LabelValues , we already know what it'll be This is ~15% time improvement, and ~25% allocation improvement: ``` benchmark old ns/op new ns/op delta BenchmarkHeadPostingForMatchers-4 74452 63514 -14.69% benchmark old allocs new allocs delta BenchmarkHeadPostingForMatchers-4 20 13 -35.00% benchmark old bytes new bytes delta BenchmarkHeadPostingForMatchers-4 5425 3137 -42.18% ``` Signed-off-by: Thomas Jackson <jacksontj.89@gmail.com>
60 lines
1.4 KiB
Go
60 lines
1.4 KiB
Go
package tsdb
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import (
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"strconv"
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"sync/atomic"
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"testing"
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"github.com/prometheus/tsdb/labels"
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"github.com/prometheus/tsdb/testutil"
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)
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func BenchmarkHeadStripeSeriesCreate(b *testing.B) {
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// Put a series, select it. GC it and then access it.
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h, err := NewHead(nil, nil, nil, 1000)
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testutil.Ok(b, err)
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defer h.Close()
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for i := 0; i < b.N; i++ {
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h.getOrCreate(uint64(i), labels.FromStrings("a", strconv.Itoa(i)))
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}
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}
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func BenchmarkHeadStripeSeriesCreateParallel(b *testing.B) {
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// Put a series, select it. GC it and then access it.
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h, err := NewHead(nil, nil, nil, 1000)
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testutil.Ok(b, err)
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defer h.Close()
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var count int64
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b.RunParallel(func(pb *testing.PB) {
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for pb.Next() {
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i := atomic.AddInt64(&count, 1)
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h.getOrCreate(uint64(i), labels.FromStrings("a", strconv.Itoa(int(i))))
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}
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})
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}
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// TODO: generalize benchmark and pass all postings for matchers here
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func BenchmarkHeadPostingForMatchers(b *testing.B) {
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// Put a series, select it. GC it and then access it.
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h, err := NewHead(nil, nil, nil, 1000)
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testutil.Ok(b, err)
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defer h.Close()
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// TODO: vary number of series
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for i := 0; i < 100; i++ {
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h.getOrCreate(uint64(i), labels.FromStrings("a", strconv.Itoa(i)))
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}
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b.ResetTimer()
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all, _ := labels.NewRegexpMatcher("a", ".*")
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for i := 0; i < b.N; i++ {
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_, err := PostingsForMatchers(h.indexRange(0, 1000), all)
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testutil.Ok(b, err)
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}
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}
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