prometheus/head_bench_test.go

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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 < 100; 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)
}
}