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Merge pull request #13491 from bboreham/faster-store-series
storage/remote: speed up StoreSeries by re-using labels.Builder
This commit is contained in:
Bryan Boreham
GitHub
commit
8655fe5401
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@ -413,9 +413,10 @@ type QueueManager struct {
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clientMtx sync.RWMutex
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storeClient WriteClient
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seriesMtx sync.Mutex // Covers seriesLabels and droppedSeries.
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seriesMtx sync.Mutex // Covers seriesLabels, droppedSeries and builder.
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seriesLabels map[chunks.HeadSeriesRef]labels.Labels
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droppedSeries map[chunks.HeadSeriesRef]struct{}
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builder *labels.Builder
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seriesSegmentMtx sync.Mutex // Covers seriesSegmentIndexes - if you also lock seriesMtx, take seriesMtx first.
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seriesSegmentIndexes map[chunks.HeadSeriesRef]int
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@ -482,6 +483,7 @@ func NewQueueManager(
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seriesLabels: make(map[chunks.HeadSeriesRef]labels.Labels),
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seriesSegmentIndexes: make(map[chunks.HeadSeriesRef]int),
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droppedSeries: make(map[chunks.HeadSeriesRef]struct{}),
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builder: labels.NewBuilder(labels.EmptyLabels()),
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numShards: cfg.MinShards,
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reshardChan: make(chan int),
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@ -897,12 +899,14 @@ func (t *QueueManager) StoreSeries(series []record.RefSeries, index int) {
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// Just make sure all the Refs of Series will insert into seriesSegmentIndexes map for tracking.
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t.seriesSegmentIndexes[s.Ref] = index
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ls := processExternalLabels(s.Labels, t.externalLabels)
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lbls, keep := relabel.Process(ls, t.relabelConfigs...)
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if !keep || lbls.IsEmpty() {
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t.builder.Reset(s.Labels)
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processExternalLabels(t.builder, t.externalLabels)
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keep := relabel.ProcessBuilder(t.builder, t.relabelConfigs...)
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if !keep {
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t.droppedSeries[s.Ref] = struct{}{}
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continue
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}
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lbls := t.builder.Labels()
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t.internLabels(lbls)
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// We should not ever be replacing a series labels in the map, but just
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@ -967,30 +971,14 @@ func (t *QueueManager) releaseLabels(ls labels.Labels) {
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ls.ReleaseStrings(t.interner.release)
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}
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// processExternalLabels merges externalLabels into ls. If ls contains
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// a label in externalLabels, the value in ls wins.
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func processExternalLabels(ls labels.Labels, externalLabels []labels.Label) labels.Labels {
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if len(externalLabels) == 0 {
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return ls
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}
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b := labels.NewScratchBuilder(ls.Len() + len(externalLabels))
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j := 0
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ls.Range(func(l labels.Label) {
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for j < len(externalLabels) && l.Name > externalLabels[j].Name {
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b.Add(externalLabels[j].Name, externalLabels[j].Value)
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j++
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// processExternalLabels merges externalLabels into b. If b contains
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// a label in externalLabels, the value in b wins.
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func processExternalLabels(b *labels.Builder, externalLabels []labels.Label) {
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for _, el := range externalLabels {
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if b.Get(el.Name) == "" {
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b.Set(el.Name, el.Value)
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}
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if j < len(externalLabels) && l.Name == externalLabels[j].Name {
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j++
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}
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b.Add(l.Name, l.Value)
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})
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for ; j < len(externalLabels); j++ {
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b.Add(externalLabels[j].Name, externalLabels[j].Value)
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}
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return b.Labels()
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}
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func (t *QueueManager) updateShardsLoop() {
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@ -38,6 +38,7 @@ import (
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"github.com/prometheus/prometheus/config"
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"github.com/prometheus/prometheus/model/histogram"
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"github.com/prometheus/prometheus/model/labels"
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"github.com/prometheus/prometheus/model/relabel"
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"github.com/prometheus/prometheus/model/timestamp"
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"github.com/prometheus/prometheus/prompb"
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"github.com/prometheus/prometheus/scrape"
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@ -868,29 +869,30 @@ func (c *NopWriteClient) Store(context.Context, []byte, int) error { return nil
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func (c *NopWriteClient) Name() string { return "nopwriteclient" }
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func (c *NopWriteClient) Endpoint() string { return "http://test-remote.com/1234" }
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// Extra labels to make a more realistic workload - taken from Kubernetes' embedded cAdvisor metrics.
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var extraLabels []labels.Label = []labels.Label{
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{Name: "kubernetes_io_arch", Value: "amd64"},
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{Name: "kubernetes_io_instance_type", Value: "c3.somesize"},
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{Name: "kubernetes_io_os", Value: "linux"},
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{Name: "container_name", Value: "some-name"},
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{Name: "failure_domain_kubernetes_io_region", Value: "somewhere-1"},
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{Name: "failure_domain_kubernetes_io_zone", Value: "somewhere-1b"},
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{Name: "id", Value: "/kubepods/burstable/pod6e91c467-e4c5-11e7-ace3-0a97ed59c75e/a3c8498918bd6866349fed5a6f8c643b77c91836427fb6327913276ebc6bde28"},
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{Name: "image", Value: "registry/organisation/name@sha256:dca3d877a80008b45d71d7edc4fd2e44c0c8c8e7102ba5cbabec63a374d1d506"},
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{Name: "instance", Value: "ip-111-11-1-11.ec2.internal"},
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{Name: "job", Value: "kubernetes-cadvisor"},
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{Name: "kubernetes_io_hostname", Value: "ip-111-11-1-11"},
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{Name: "monitor", Value: "prod"},
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{Name: "name", Value: "k8s_some-name_some-other-name-5j8s8_kube-system_6e91c467-e4c5-11e7-ace3-0a97ed59c75e_0"},
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{Name: "namespace", Value: "kube-system"},
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{Name: "pod_name", Value: "some-other-name-5j8s8"},
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}
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func BenchmarkSampleSend(b *testing.B) {
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// Send one sample per series, which is the typical remote_write case
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const numSamples = 1
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const numSeries = 10000
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// Extra labels to make a more realistic workload - taken from Kubernetes' embedded cAdvisor metrics.
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extraLabels := []labels.Label{
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{Name: "kubernetes_io_arch", Value: "amd64"},
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{Name: "kubernetes_io_instance_type", Value: "c3.somesize"},
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{Name: "kubernetes_io_os", Value: "linux"},
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{Name: "container_name", Value: "some-name"},
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{Name: "failure_domain_kubernetes_io_region", Value: "somewhere-1"},
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{Name: "failure_domain_kubernetes_io_zone", Value: "somewhere-1b"},
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{Name: "id", Value: "/kubepods/burstable/pod6e91c467-e4c5-11e7-ace3-0a97ed59c75e/a3c8498918bd6866349fed5a6f8c643b77c91836427fb6327913276ebc6bde28"},
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{Name: "image", Value: "registry/organisation/name@sha256:dca3d877a80008b45d71d7edc4fd2e44c0c8c8e7102ba5cbabec63a374d1d506"},
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{Name: "instance", Value: "ip-111-11-1-11.ec2.internal"},
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{Name: "job", Value: "kubernetes-cadvisor"},
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{Name: "kubernetes_io_hostname", Value: "ip-111-11-1-11"},
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{Name: "monitor", Value: "prod"},
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{Name: "name", Value: "k8s_some-name_some-other-name-5j8s8_kube-system_6e91c467-e4c5-11e7-ace3-0a97ed59c75e_0"},
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{Name: "namespace", Value: "kube-system"},
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{Name: "pod_name", Value: "some-other-name-5j8s8"},
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}
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samples, series := createTimeseries(numSamples, numSeries, extraLabels...)
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c := NewNopWriteClient()
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@ -921,6 +923,58 @@ func BenchmarkSampleSend(b *testing.B) {
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b.StopTimer()
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}
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// Check how long it takes to add N series, including external labels processing.
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func BenchmarkStoreSeries(b *testing.B) {
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externalLabels := []labels.Label{
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{Name: "cluster", Value: "mycluster"},
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{Name: "replica", Value: "1"},
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}
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relabelConfigs := []*relabel.Config{{
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SourceLabels: model.LabelNames{"namespace"},
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Separator: ";",
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Regex: relabel.MustNewRegexp("kube.*"),
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TargetLabel: "job",
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Replacement: "$1",
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Action: relabel.Replace,
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}}
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testCases := []struct {
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name string
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externalLabels []labels.Label
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ts []prompb.TimeSeries
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relabelConfigs []*relabel.Config
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}{
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{name: "plain"},
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{name: "externalLabels", externalLabels: externalLabels},
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{name: "relabel", relabelConfigs: relabelConfigs},
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{
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name: "externalLabels+relabel",
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externalLabels: externalLabels,
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relabelConfigs: relabelConfigs,
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},
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}
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// numSeries chosen to be big enough that StoreSeries dominates creating a new queue manager.
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const numSeries = 1000
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_, series := createTimeseries(0, numSeries, extraLabels...)
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for _, tc := range testCases {
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b.Run(tc.name, func(b *testing.B) {
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for i := 0; i < b.N; i++ {
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c := NewTestWriteClient()
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dir := b.TempDir()
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cfg := config.DefaultQueueConfig
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mcfg := config.DefaultMetadataConfig
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metrics := newQueueManagerMetrics(nil, "", "")
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m := NewQueueManager(metrics, nil, nil, nil, dir, newEWMARate(ewmaWeight, shardUpdateDuration), cfg, mcfg, labels.EmptyLabels(), nil, c, defaultFlushDeadline, newPool(), newHighestTimestampMetric(), nil, false, false)
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m.externalLabels = tc.externalLabels
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m.relabelConfigs = tc.relabelConfigs
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m.StoreSeries(series, 0)
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}
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})
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}
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}
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func BenchmarkStartup(b *testing.B) {
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dir := os.Getenv("WALDIR")
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if dir == "" {
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@ -959,7 +1013,8 @@ func BenchmarkStartup(b *testing.B) {
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}
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func TestProcessExternalLabels(t *testing.T) {
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for _, tc := range []struct {
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b := labels.NewBuilder(labels.EmptyLabels())
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for i, tc := range []struct {
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labels labels.Labels
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externalLabels []labels.Label
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expected labels.Labels
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@ -1020,7 +1075,9 @@ func TestProcessExternalLabels(t *testing.T) {
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expected: labels.FromStrings("a", "b", "c", "d", "e", "f"),
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},
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} {
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require.Equal(t, tc.expected, processExternalLabels(tc.labels, tc.externalLabels))
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b.Reset(tc.labels)
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processExternalLabels(b, tc.externalLabels)
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require.Equal(t, tc.expected, b.Labels(), "test %d", i)
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}
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}
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