mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-11-23 20:37:12 +01:00
e0e16a2d36
- Document the change at docs/CHANGELOG.md
- Clarify comments for non-trivial code touched by the commit
- Improve the logic behind maybeCreateIndexes():
- Correctly create per-day indexes if the indexdb rotation is performed during
the first hour or the last hour of the day by UTC.
Previously there was a possibility of missing index entries on that day.
- Increase the duration for creating new indexes in the current indexdb for up to 22 hours
after indexdb rotation. This should reduce the increased resource usage
after indexdb rotation.
It is safe to postpone index creation for the current day until the last hour
of the current day after indexdb rotation by UTC, since the corresponding (date, ...)
entries exist in the previous indexdb.
- Search for TSID by (date, MetricName) in both the current and the previous indexdb.
Previously the search was performed only in the current indexdb. This could lead
to excess creation of per-day indexes for the current day just after indexdb rotation.
- Search for (date, metricID) entries in both the current and the previous indexdb.
Previously the search was performed only in the current indexdb. This could lead
to excess creation of per-day indexes for the current day just after indexdb rotation.
343 lines
9.7 KiB
Go
343 lines
9.7 KiB
Go
package storage
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import (
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"fmt"
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"os"
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"regexp"
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"strconv"
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"testing"
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"time"
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)
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func BenchmarkRegexpFilterMatch(b *testing.B) {
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b.ReportAllocs()
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b.RunParallel(func(pb *testing.PB) {
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re := regexp.MustCompile(`.*foo-bar-baz.*`)
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b := []byte("fdsffd foo-bar-baz assd fdsfad dasf dsa")
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for pb.Next() {
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if !re.Match(b) {
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panic("BUG: regexp must match!")
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}
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b[0]++
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}
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})
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}
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func BenchmarkRegexpFilterMismatch(b *testing.B) {
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b.ReportAllocs()
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b.RunParallel(func(pb *testing.PB) {
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re := regexp.MustCompile(`.*foo-bar-baz.*`)
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b := []byte("fdsffd foo-bar sfddsf assd nmn,mfdsdsakj")
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for pb.Next() {
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if re.Match(b) {
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panic("BUG: regexp mustn't match!")
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}
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b[0]++
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}
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})
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}
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func BenchmarkIndexDBAddTSIDs(b *testing.B) {
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const recordsPerLoop = 1e3
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s := newTestStorage()
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defer stopTestStorage(s)
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dbName := nextIndexDBTableName()
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var isReadOnly uint32
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db := mustOpenIndexDB(dbName, s, 0, &isReadOnly)
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defer func() {
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db.MustClose()
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if err := os.RemoveAll(dbName); err != nil {
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b.Fatalf("cannot remove indexDB: %s", err)
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}
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}()
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b.ReportAllocs()
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b.SetBytes(recordsPerLoop)
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b.ResetTimer()
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b.RunParallel(func(pb *testing.PB) {
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var mn MetricName
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var genTSID generationTSID
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// The most common tags.
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mn.Tags = []Tag{
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{
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Key: []byte("job"),
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},
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{
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Key: []byte("instance"),
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},
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}
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startOffset := 0
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for pb.Next() {
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benchmarkIndexDBAddTSIDs(db, &genTSID, &mn, startOffset, recordsPerLoop)
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startOffset += recordsPerLoop
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}
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})
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b.StopTimer()
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}
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func benchmarkIndexDBAddTSIDs(db *indexDB, genTSID *generationTSID, mn *MetricName, startOffset, recordsPerLoop int) {
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var metricName []byte
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var metricNameRaw []byte
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is := db.getIndexSearch(noDeadline)
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defer db.putIndexSearch(is)
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for i := 0; i < recordsPerLoop; i++ {
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mn.MetricGroup = strconv.AppendUint(mn.MetricGroup[:0], uint64(i+startOffset), 10)
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for j := range mn.Tags {
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mn.Tags[j].Value = strconv.AppendUint(mn.Tags[j].Value[:0], uint64(i*j), 16)
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}
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mn.sortTags()
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metricName = mn.Marshal(metricName[:0])
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metricNameRaw = mn.marshalRaw(metricNameRaw[:0])
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if err := is.GetOrCreateTSIDByName(genTSID, metricName, metricNameRaw, 0); err != nil {
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panic(fmt.Errorf("cannot insert record: %w", err))
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}
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}
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}
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func BenchmarkHeadPostingForMatchers(b *testing.B) {
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// This benchmark is equivalent to https://github.com/prometheus/prometheus/blob/23c0299d85bfeb5d9b59e994861553a25ca578e5/tsdb/head_bench_test.go#L52
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// See https://www.robustperception.io/evaluating-performance-and-correctness for more details.
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s := newTestStorage()
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defer stopTestStorage(s)
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dbName := nextIndexDBTableName()
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var isReadOnly uint32
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db := mustOpenIndexDB(dbName, s, 0, &isReadOnly)
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defer func() {
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db.MustClose()
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if err := os.RemoveAll(dbName); err != nil {
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b.Fatalf("cannot remove indexDB: %s", err)
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}
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}()
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// Fill the db with data as in https://github.com/prometheus/prometheus/blob/23c0299d85bfeb5d9b59e994861553a25ca578e5/tsdb/head_bench_test.go#L66
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var mn MetricName
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var metricName []byte
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var metricNameRaw []byte
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var tsid TSID
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is := db.getIndexSearch(noDeadline)
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defer db.putIndexSearch(is)
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addSeries := func(kvs ...string) {
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mn.Reset()
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for i := 0; i < len(kvs); i += 2 {
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mn.AddTag(kvs[i], kvs[i+1])
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}
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mn.sortTags()
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metricName = mn.Marshal(metricName[:0])
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metricNameRaw = mn.marshalRaw(metricNameRaw[:0])
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if err := is.createTSIDByMetricName(&tsid, metricName, metricNameRaw, 0); err != nil {
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b.Fatalf("cannot insert record: %s", err)
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}
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}
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for n := 0; n < 10; n++ {
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ns := strconv.Itoa(n)
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for i := 0; i < 100000; i++ {
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ix := strconv.Itoa(i)
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addSeries("i", ix, "n", ns, "j", "foo")
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// Have some series that won't be matched, to properly test inverted matches.
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addSeries("i", ix, "n", ns, "j", "bar")
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addSeries("i", ix, "n", "0_"+ns, "j", "bar")
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addSeries("i", ix, "n", "1_"+ns, "j", "bar")
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addSeries("i", ix, "n", "2_"+ns, "j", "foo")
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}
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}
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// Make sure all the items can be searched.
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db.tb.DebugFlush()
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b.ResetTimer()
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benchSearch := func(b *testing.B, tfs *TagFilters, expectedMetricIDs int) {
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is := db.getIndexSearch(noDeadline)
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defer db.putIndexSearch(is)
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tfss := []*TagFilters{tfs}
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tr := TimeRange{
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MinTimestamp: 0,
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MaxTimestamp: timestampFromTime(time.Now()),
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}
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for i := 0; i < b.N; i++ {
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metricIDs, err := is.searchMetricIDs(nil, tfss, tr, 2e9)
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if err != nil {
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b.Fatalf("unexpected error in searchMetricIDs: %s", err)
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}
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if len(metricIDs) != expectedMetricIDs {
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b.Fatalf("unexpected metricIDs found; got %d; want %d", len(metricIDs), expectedMetricIDs)
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}
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}
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}
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addTagFilter := func(tfs *TagFilters, key, value string, isNegative, isRegexp bool) {
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if err := tfs.Add([]byte(key), []byte(value), isNegative, isRegexp); err != nil {
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b.Fatalf("cannot add tag filter %q=%q, isNegative=%v, isRegexp=%v", key, value, isNegative, isRegexp)
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}
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}
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b.Run(`n="1"`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "n", "1", false, false)
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benchSearch(b, tfs, 2e5)
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})
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b.Run(`n="1",j="foo"`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "n", "1", false, false)
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addTagFilter(tfs, "j", "foo", false, false)
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benchSearch(b, tfs, 1e5)
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})
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b.Run(`j="foo",n="1"`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "j", "foo", false, false)
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addTagFilter(tfs, "n", "1", false, false)
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benchSearch(b, tfs, 1e5)
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})
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b.Run(`n="1",j!="foo"`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "n", "1", false, false)
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addTagFilter(tfs, "j", "foo", true, false)
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benchSearch(b, tfs, 1e5)
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})
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b.Run(`i=~".*"`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "i", ".*", false, true)
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benchSearch(b, tfs, 0)
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})
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b.Run(`i=~".+"`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "i", ".+", false, true)
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benchSearch(b, tfs, 5e6)
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})
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b.Run(`i=~""`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "i", "", false, true)
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benchSearch(b, tfs, 0)
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})
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b.Run(`i!=""`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "i", "", true, false)
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benchSearch(b, tfs, 5e6)
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})
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b.Run(`n="1",i=~".*",j="foo"`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "n", "1", false, false)
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addTagFilter(tfs, "i", ".*", false, true)
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addTagFilter(tfs, "j", "foo", false, false)
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benchSearch(b, tfs, 1e5)
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})
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b.Run(`n="1",i=~".*",i!="2",j="foo"`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "n", "1", false, false)
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addTagFilter(tfs, "i", ".*", false, true)
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addTagFilter(tfs, "i", "2", true, false)
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addTagFilter(tfs, "j", "foo", false, false)
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benchSearch(b, tfs, 1e5-1)
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})
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b.Run(`n="1",i!=""`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "n", "1", false, false)
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addTagFilter(tfs, "i", "", true, false)
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benchSearch(b, tfs, 2e5)
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})
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b.Run(`n="1",i!="",j="foo"`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "n", "1", false, false)
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addTagFilter(tfs, "i", "", true, false)
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addTagFilter(tfs, "j", "foo", false, false)
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benchSearch(b, tfs, 1e5)
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})
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b.Run(`n="1",i=~".+",j="foo"`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "n", "1", false, false)
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addTagFilter(tfs, "i", ".+", false, true)
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addTagFilter(tfs, "j", "foo", false, false)
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benchSearch(b, tfs, 1e5)
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})
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b.Run(`n="1",i=~"1.+",j="foo"`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "n", "1", false, false)
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addTagFilter(tfs, "i", "1.+", false, true)
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addTagFilter(tfs, "j", "foo", false, false)
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benchSearch(b, tfs, 11110)
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})
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b.Run(`n="1",i=~".+",i!="2",j="foo"`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "n", "1", false, false)
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addTagFilter(tfs, "i", ".+", false, true)
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addTagFilter(tfs, "i", "2", true, false)
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addTagFilter(tfs, "j", "foo", false, false)
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benchSearch(b, tfs, 1e5-1)
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})
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b.Run(`n="1",i=~".+",i!~"2.*",j="foo"`, func(b *testing.B) {
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tfs := NewTagFilters()
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addTagFilter(tfs, "n", "1", false, false)
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addTagFilter(tfs, "i", ".+", false, true)
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addTagFilter(tfs, "i", "2.*", true, true)
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addTagFilter(tfs, "j", "foo", false, false)
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benchSearch(b, tfs, 88889)
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})
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}
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func BenchmarkIndexDBGetTSIDs(b *testing.B) {
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s := newTestStorage()
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defer stopTestStorage(s)
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dbName := nextIndexDBTableName()
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var isReadOnly uint32
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db := mustOpenIndexDB(dbName, s, 0, &isReadOnly)
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defer func() {
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db.MustClose()
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if err := os.RemoveAll(dbName); err != nil {
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b.Fatalf("cannot remove indexDB: %s", err)
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}
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}()
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const recordsPerLoop = 1000
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const recordsCount = 1e5
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// Fill the db with recordsCount records.
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var mn MetricName
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mn.MetricGroup = []byte("rps")
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for i := 0; i < 2; i++ {
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key := fmt.Sprintf("key_%d", i)
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value := fmt.Sprintf("value_%d", i)
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mn.AddTag(key, value)
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}
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var genTSID generationTSID
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var metricName []byte
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var metricNameRaw []byte
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is := db.getIndexSearch(noDeadline)
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defer db.putIndexSearch(is)
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for i := 0; i < recordsCount; i++ {
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mn.sortTags()
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metricName = mn.Marshal(metricName[:0])
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metricNameRaw = mn.marshalRaw(metricName[:0])
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if err := is.GetOrCreateTSIDByName(&genTSID, metricName, metricNameRaw, 0); err != nil {
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b.Fatalf("cannot insert record: %s", err)
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}
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}
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b.SetBytes(recordsPerLoop)
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b.ReportAllocs()
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b.ResetTimer()
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b.RunParallel(func(pb *testing.PB) {
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var tsidLocal generationTSID
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var metricNameLocal []byte
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var metricNameLocalRaw []byte
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mnLocal := mn
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is := db.getIndexSearch(noDeadline)
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defer db.putIndexSearch(is)
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for pb.Next() {
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for i := 0; i < recordsPerLoop; i++ {
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mnLocal.sortTags()
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metricNameLocal = mnLocal.Marshal(metricNameLocal[:0])
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metricNameLocalRaw = mnLocal.marshalRaw(metricNameLocalRaw[:0])
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if err := is.GetOrCreateTSIDByName(&tsidLocal, metricNameLocal, metricNameLocalRaw, 0); err != nil {
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panic(fmt.Errorf("cannot obtain tsid: %w", err))
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}
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}
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}
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})
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b.StopTimer()
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}
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