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Merge pull request #118960 from MikeSpreitzer/add-seat-occupancy-metric

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Introduce apiserver_flowcontrol_current_executing_seats metric
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Kubernetes Prow Robot 2023-07-05 23:17:05 -07:00 committed by GitHub
commit fbb2f89668
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2 changed files with 20 additions and 7 deletions
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6
staging/src/k8s.io/apiserver/pkg/util/flowcontrol/fairqueuing/queueset/queueset.go
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@ -726,7 +726,7 @@ func (qs *queueSet) dispatchSansQueueLocked(ctx context.Context, workEstimate *f
qs.totRequestsExecuting++
qs.totSeatsInUse += req.MaxSeats()
metrics.AddRequestsExecuting(ctx, qs.qCfg.Name, fsName, 1)
metrics.AddRequestConcurrencyInUse(qs.qCfg.Name, fsName, req.MaxSeats())
metrics.AddSeatConcurrencyInUse(qs.qCfg.Name, fsName, req.MaxSeats())
qs.reqsGaugePair.RequestsExecuting.Add(1)
qs.execSeatsGauge.Add(float64(req.MaxSeats()))
qs.seatDemandIntegrator.Set(float64(qs.totSeatsInUse + qs.totSeatsWaiting))
@ -771,7 +771,7 @@ func (qs *queueSet) dispatchLocked() bool {
queue.requestsExecuting++
queue.seatsInUse += request.MaxSeats()
metrics.AddRequestsExecuting(request.ctx, qs.qCfg.Name, request.fsName, 1)
metrics.AddRequestConcurrencyInUse(qs.qCfg.Name, request.fsName, request.MaxSeats())
metrics.AddSeatConcurrencyInUse(qs.qCfg.Name, request.fsName, request.MaxSeats())
qs.reqsGaugePair.RequestsExecuting.Add(1)
qs.execSeatsGauge.Add(float64(request.MaxSeats()))
qs.seatDemandIntegrator.Set(float64(qs.totSeatsInUse + qs.totSeatsWaiting))
@ -938,7 +938,7 @@ func (qs *queueSet) finishRequestLocked(r *request) {
defer qs.removeQueueIfEmptyLocked(r)
qs.totSeatsInUse -= r.MaxSeats()
metrics.AddRequestConcurrencyInUse(qs.qCfg.Name, r.fsName, -r.MaxSeats())
metrics.AddSeatConcurrencyInUse(qs.qCfg.Name, r.fsName, -r.MaxSeats())
qs.execSeatsGauge.Add(-float64(r.MaxSeats()))
qs.seatDemandIntegrator.Set(float64(qs.totSeatsInUse + qs.totSeatsWaiting))
if r.queue != nil {

21
staging/src/k8s.io/apiserver/pkg/util/flowcontrol/metrics/metrics.go
View File

@ -241,16 +241,27 @@ var (
},
[]string{priorityLevel, flowSchema},
)
apiserverRequestConcurrencyInUse = compbasemetrics.NewGaugeVec(
apiserverCurrentExecutingSeats = compbasemetrics.NewGaugeVec(
&compbasemetrics.GaugeOpts{
Namespace: namespace,
Subsystem: subsystem,
Name: "request_concurrency_in_use",
Name: "current_executing_seats",
Help: "Concurrency (number of seats) occupied by the currently executing (initial stage for a WATCH, any stage otherwise) requests in the API Priority and Fairness subsystem",
StabilityLevel: compbasemetrics.ALPHA,
},
[]string{priorityLevel, flowSchema},
)
apiserverRequestConcurrencyInUse = compbasemetrics.NewGaugeVec(
&compbasemetrics.GaugeOpts{
Namespace: namespace,
Subsystem: subsystem,
Name: "request_concurrency_in_use",
Help: "Concurrency (number of seats) occupied by the currently executing (initial stage for a WATCH, any stage otherwise) requests in the API Priority and Fairness subsystem",
DeprecatedVersion: "1.28.0",
StabilityLevel: compbasemetrics.ALPHA,
},
[]string{priorityLevel, flowSchema},
)
apiserverRequestWaitingSeconds = compbasemetrics.NewHistogramVec(
&compbasemetrics.HistogramOpts{
Namespace: namespace,
@ -444,6 +455,7 @@ var (
apiserverRequestQueueLength,
apiserverRequestConcurrencyLimit,
apiserverRequestConcurrencyInUse,
apiserverCurrentExecutingSeats,
apiserverCurrentExecutingRequests,
apiserverRequestWaitingSeconds,
apiserverRequestExecutionSeconds,
@ -523,9 +535,10 @@ func SetDispatchMetrics(priorityLevel string, r, s, sMin, sMax, discountedSMin,
apiserverNextDiscountedSBounds.WithLabelValues(priorityLevel, "max").Set(discountedSMax)
}
// AddRequestConcurrencyInUse adds the given delta to the gauge of concurrency in use by
// AddSeatConcurrencyInUse adds the given delta to the gauge of seats in use by
// the currently executing requests of the given flowSchema and priorityLevel
func AddRequestConcurrencyInUse(priorityLevel, flowSchema string, delta int) {
func AddSeatConcurrencyInUse(priorityLevel, flowSchema string, delta int) {
apiserverCurrentExecutingSeats.WithLabelValues(priorityLevel, flowSchema).Add(float64(delta))
apiserverRequestConcurrencyInUse.WithLabelValues(priorityLevel, flowSchema).Add(float64(delta))
}