121 lines
3.8 KiB
Go
121 lines
3.8 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package metrics
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import (
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"sync"
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"time"
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"github.com/prometheus/client_golang/prometheus"
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)
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const (
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// SchedulerSubsystem - subsystem name used by scheduler
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SchedulerSubsystem = "scheduler"
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// SchedulingLatencyName - scheduler latency metric name
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SchedulingLatencyName = "scheduling_latencies_summary"
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// OperationLabel - operation label name
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OperationLabel = "operation"
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// Binding - binding operation label value
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Binding = "binding"
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// SchedulingAlgorithm - scheduling algorithm operation label value
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SchedulingAlgorithm = "scheduling_algorithm"
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// E2eScheduling - e2e scheduling operation label value
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E2eScheduling = "e2e_scheduling"
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)
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// All the histogram based metrics have 1ms as size for the smallest bucket.
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var (
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SchedulingLatency = prometheus.NewSummaryVec(
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prometheus.SummaryOpts{
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Subsystem: SchedulerSubsystem,
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Name: SchedulingLatencyName,
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Help: "Scheduling latency in microseconds split by sub-parts of the scheduling operation",
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// Make the sliding window of 5h.
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// TODO: The value for this should be based on some SLI definition (long term).
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MaxAge: 5 * time.Hour,
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},
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[]string{OperationLabel},
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)
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SchedulingAlgorithmPredicateEvaluationDuration = prometheus.NewHistogram(
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prometheus.HistogramOpts{
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Subsystem: SchedulerSubsystem,
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Name: "scheduling_algorithm_predicate_evaluation",
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Help: "Scheduling algorithm predicate evaluation duration",
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Buckets: prometheus.ExponentialBuckets(1000, 2, 15),
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},
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)
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SchedulingAlgorithmPriorityEvaluationDuration = prometheus.NewHistogram(
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prometheus.HistogramOpts{
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Subsystem: SchedulerSubsystem,
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Name: "scheduling_algorithm_priority_evaluation",
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Help: "Scheduling algorithm priority evaluation duration",
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Buckets: prometheus.ExponentialBuckets(1000, 2, 15),
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},
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)
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SchedulingAlgorithmPremptionEvaluationDuration = prometheus.NewHistogram(
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prometheus.HistogramOpts{
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Subsystem: SchedulerSubsystem,
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Name: "scheduling_algorithm_preemption_evaluation",
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Help: "Scheduling algorithm preemption evaluation duration",
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Buckets: prometheus.ExponentialBuckets(1000, 2, 15),
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},
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)
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PreemptionVictims = prometheus.NewGauge(
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prometheus.GaugeOpts{
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Subsystem: SchedulerSubsystem,
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Name: "pod_preemption_victims",
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Help: "Number of selected preemption victims",
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})
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PreemptionAttempts = prometheus.NewCounter(
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prometheus.CounterOpts{
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Subsystem: SchedulerSubsystem,
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Name: "total_preemption_attempts",
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Help: "Total preemption attempts in the cluster till now",
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})
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metricsList = []prometheus.Collector{
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SchedulingLatency,
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SchedulingAlgorithmPredicateEvaluationDuration,
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SchedulingAlgorithmPriorityEvaluationDuration,
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SchedulingAlgorithmPremptionEvaluationDuration,
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PreemptionVictims,
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PreemptionAttempts,
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}
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)
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var registerMetrics sync.Once
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// Register all metrics.
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func Register() {
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registerMetrics.Do(func() {
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for _, metric := range metricsList {
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prometheus.MustRegister(metric)
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}
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})
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}
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// Reset resets metrics
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func Reset() {
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SchedulingLatency.Reset()
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}
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// SinceInMicroseconds gets the time since the specified start in microseconds.
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func SinceInMicroseconds(start time.Time) float64 {
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return float64(time.Since(start).Nanoseconds() / time.Microsecond.Nanoseconds())
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}
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