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179 changes: 179 additions & 0 deletions
179
clusterloader2/pkg/measurement/common/neg_latency_measurement.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,179 @@ | ||
| /* | ||
| Copyright 2024 The Kubernetes 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 common | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "math" | ||
| "strconv" | ||
| "time" | ||
|
|
||
| "github.com/prometheus/common/model" | ||
| "k8s.io/klog/v2" | ||
| "k8s.io/perf-tests/clusterloader2/pkg/errors" | ||
| "k8s.io/perf-tests/clusterloader2/pkg/measurement" | ||
| measurementutil "k8s.io/perf-tests/clusterloader2/pkg/measurement/util" | ||
| "k8s.io/perf-tests/clusterloader2/pkg/util" | ||
| ) | ||
|
|
||
| const ( | ||
| negLatencyMeasurementName = "NegLatency" | ||
| negInitLatencyQuery = `sum(sum_over_time(neg_controller_neg_initialization_duration_seconds_bucket[%v])) by (le)` | ||
| negOpLatencyQuery = `sum(sum_over_time(neg_controller_neg_operation_duration_seconds_bucket{operation="%v"}[%v])) by (le)` | ||
| negInitializationMetricName = "neg_initialization" | ||
| negAttachOpMetricName = "neg_attach_endpoint" | ||
| negDetachOpMetricName = "neg_detach_endpoint" | ||
| negAttachOpKey = "Attach" | ||
| negDetachOpKey = "Detach" | ||
| negInfBucketSLO = "+Inf" | ||
|
|
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| negQueryInterval = 10 * time.Minute | ||
|
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| defaultNegInitBucketSLO float64 = 16 | ||
| defaultNegInitPercentileSLO float64 = 95 | ||
| defaultNegAttachBucketSLO float64 = 64 | ||
| defaultNegAttachPercentileSLO float64 = 95 | ||
| defaultNegDetachBucketSLO float64 = 32 | ||
| defaultNegDetachPercentileSLO float64 = 95 | ||
| ) | ||
|
|
||
| func init() { | ||
| create := func() measurement.Measurement { | ||
| return CreatePrometheusMeasurement(&negLatencyGatherer{}) | ||
| } | ||
| if err := measurement.Register(negLatencyMeasurementName, create); err != nil { | ||
| klog.Fatalf("Cannot register %s: %v", negLatencyMeasurementName, err) | ||
| } | ||
| } | ||
|
|
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| type negLatencyGatherer struct{} | ||
|
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| type negLatencyMetricMap map[string]map[string]int | ||
|
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| func (g *negLatencyGatherer) Gather(executor QueryExecutor, startTime, endTime time.Time, config *measurement.Config) ([]measurement.Summary, error) { | ||
| negMetrics := g.gatherMetrics(executor, startTime, endTime) | ||
|
|
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| content, err := util.PrettyPrintJSON(negMetrics) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| summaries := []measurement.Summary{measurement.CreateSummary(negLatencyMeasurementName, "json", content)} | ||
| return summaries, validateNegSLOs(negMetrics, config) | ||
| } | ||
|
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| func validateNegSLOs(result negLatencyMetricMap, config *measurement.Config) error { | ||
| if err := validateNegSLO(result, negInitializationMetricName, "negInitBucketSLO", "negInitPercentileSLO", defaultNegInitBucketSLO, defaultNegInitPercentileSLO, config); err != nil { | ||
| return err | ||
| } | ||
| if err := validateNegSLO(result, negAttachOpMetricName, "negAttachBucketSLO", "negAttachPercentileSLO", defaultNegAttachBucketSLO, defaultNegAttachPercentileSLO, config); err != nil { | ||
| return err | ||
| } | ||
| if err := validateNegSLO(result, negDetachOpMetricName, "negDetachBucketSLO", "negDetachPercentileSLO", defaultNegDetachBucketSLO, defaultNegDetachPercentileSLO, config); err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
|
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| func validateNegSLO(result negLatencyMetricMap, metricName, bucketName, percentileName string, defaultBucketSLO, defaultPercentileSLO float64, config *measurement.Config) error { | ||
| bucketNumSLO, err := util.GetFloat64OrDefault(config.Params, bucketName, defaultBucketSLO) | ||
| if err != nil || bucketNumSLO == 0 { | ||
| klog.V(2).Infof("Using default value for %s: %f, because %s param is invalid: %v", bucketName, defaultBucketSLO, bucketName, err) | ||
| bucketNumSLO = defaultBucketSLO | ||
| } | ||
| bucketSLO := strconv.FormatFloat(bucketNumSLO, 'g', -1, 64) | ||
|
|
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| percentileSLO, err := util.GetFloat64OrDefault(config.Params, percentileName, defaultPercentileSLO) | ||
| if err != nil || percentileSLO == 0 { | ||
| klog.V(2).Infof("Using default value for %s: %f, because %s param is invalid: %v", percentileName, defaultPercentileSLO, percentileName, err) | ||
| percentileSLO = defaultPercentileSLO | ||
| } | ||
|
|
||
| if buckets, ok := result[metricName]; ok { | ||
| totalEvents := buckets[negInfBucketSLO] | ||
| if totalEvents != 0 { | ||
| acceptedEvents := buckets[bucketSLO] | ||
| perc := (float64(acceptedEvents) / float64(totalEvents)) * 100 | ||
| if perc < percentileSLO { | ||
| return errors.NewMetricViolationError( | ||
| metricName, | ||
| fmt.Sprintf("Updates for %ss latency is within %d%%, expected %d%%, buckets:\n%v", | ||
| bucketSLO, | ||
| int(math.Floor(perc)), | ||
| int(math.Floor(percentileSLO)), | ||
| buckets, | ||
| ), | ||
| ) | ||
| } | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (g *negLatencyGatherer) gatherMetrics(executor QueryExecutor, startTime, endTime time.Time) negLatencyMetricMap { | ||
| result := make(negLatencyMetricMap) | ||
| gatherAndProcessSamples := func(metricName, queryTpl string, queryParams ...interface{}) { | ||
| var samples []*model.Sample | ||
| prevQueryTime := startTime | ||
| currQueryTime := startTime.Add(negQueryInterval) | ||
|
|
||
| for { | ||
| if currQueryTime.After(endTime) { | ||
| currQueryTime = endTime | ||
| } | ||
| interval := currQueryTime.Sub(prevQueryTime) | ||
| promDuration := measurementutil.ToPrometheusTime(interval) | ||
| query := fmt.Sprintf(queryTpl, append(queryParams, promDuration)...) | ||
| newSamples, err := executor.Query(query, currQueryTime) | ||
| if err == nil { | ||
| samples = append(samples, newSamples...) | ||
| } else { | ||
| klog.V(2).Infof("Got error querying Prometheus: %v", err) | ||
| } | ||
| if currQueryTime == endTime { | ||
| break | ||
| } | ||
| prevQueryTime = currQueryTime | ||
| currQueryTime = currQueryTime.Add(queryInterval) | ||
| } | ||
|
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| for _, sample := range samples { | ||
| bucket, value := string(sample.Metric["le"]), int(math.Round(float64(sample.Value))) | ||
| if _, ok := result[metricName]; !ok { | ||
| result[metricName] = make(map[string]int) | ||
| } | ||
| result[metricName][bucket] = value | ||
| } | ||
| } | ||
|
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| gatherAndProcessSamples(negInitializationMetricName, negInitLatencyQuery) | ||
| gatherAndProcessSamples(negAttachOpMetricName, negOpLatencyQuery, negAttachOpKey) | ||
| gatherAndProcessSamples(negDetachOpMetricName, negOpLatencyQuery, negDetachOpKey) | ||
| return result | ||
| } | ||
|
|
||
| func (g *negLatencyGatherer) Configure(_ *measurement.Config) error { | ||
| return nil | ||
| } | ||
|
|
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| func (g *negLatencyGatherer) IsEnabled(_ *measurement.Config) bool { | ||
| return true | ||
| } | ||
|
|
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| func (*negLatencyGatherer) String() string { | ||
| return negLatencyMeasurementName | ||
| } |
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