Merge pull request #112393 from borgerli/apf-pl-dump

APF: two improvements when dumping priority levels

staging/src/k8s.io/apiserver/pkg/util/flowcontrol/apf_controller_debug.go

@@ -20,6 +20,7 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"sort"
 	"strconv"
 	"strings"
 	"text/tabwriter"
@@ -56,10 +57,24 @@ func (cfgCtlr *configController) dumpPriorityLevels(w http.ResponseWriter, r *ht
 		"IsQuiescing",        // 4
 		"WaitingRequests",    // 5
 		"ExecutingRequests",  // 6
+		"DispatchedRequests", // 7
+		"RejectedRequests",   // 8
+		"TimedoutRequests",   // 9
+		"CancelledRequests",  // 10
 	}
 	tabPrint(tabWriter, rowForHeaders(columnHeaders))
 	endLine(tabWriter)
-	for _, plState := range cfgCtlr.priorityLevelStates {
+	plNames := make([]string, 0, len(cfgCtlr.priorityLevelStates))
+	for plName := range cfgCtlr.priorityLevelStates {
+		plNames = append(plNames, plName)
+	}
+	sort.Strings(plNames)
+	for i := range plNames {
+		plState, ok := cfgCtlr.priorityLevelStates[plNames[i]]
+		if !ok {
+			continue
+		}
+
 		if plState.queues == nil {
 			tabPrint(tabWriter, row(
 				plState.pl.Name, // 1
@@ -68,6 +83,10 @@ func (cfgCtlr *configController) dumpPriorityLevels(w http.ResponseWriter, r *ht
 				"<none>",        // 4
 				"<none>",        // 5
 				"<none>",        // 6
+				"<none>",        // 7
+				"<none>",        // 8
+				"<none>",        // 9
+				"<none>",        // 10
 			))
 			endLine(tabWriter)
 			continue
@@ -87,6 +106,10 @@ func (cfgCtlr *configController) dumpPriorityLevels(w http.ResponseWriter, r *ht
 			plState.quiescing,         // 4
 			queueSetDigest.Waiting,    // 5
 			queueSetDigest.Executing,  // 6
+			queueSetDigest.Dispatched, // 7
+			queueSetDigest.Rejected,   // 8
+			queueSetDigest.Timedout,   // 9
+			queueSetDigest.Cancelled,  // 10
 		))
 		endLine(tabWriter)
 	}
@@ -236,7 +259,8 @@ func rowForHeaders(headers []string) string {
 	return row(headers...)
 }
 
-func rowForPriorityLevel(plName string, activeQueues int, isIdle, isQuiescing bool, waitingRequests, executingRequests int) string {
+func rowForPriorityLevel(plName string, activeQueues int, isIdle, isQuiescing bool, waitingRequests, executingRequests int,
+	dispatchedReqeusts, rejectedRequests, timedoutRequests, cancelledRequests int) string {
 	return row(
 		plName,
 		strconv.Itoa(activeQueues),
@@ -244,6 +268,10 @@ func rowForPriorityLevel(plName string, activeQueues int, isIdle, isQuiescing bo
 		strconv.FormatBool(isQuiescing),
 		strconv.Itoa(waitingRequests),
 		strconv.Itoa(executingRequests),
+		strconv.Itoa(dispatchedReqeusts),
+		strconv.Itoa(rejectedRequests),
+		strconv.Itoa(timedoutRequests),
+		strconv.Itoa(cancelledRequests),
 	)
 }
 

staging/src/k8s.io/apiserver/pkg/util/flowcontrol/apf_filter.go

@@ -181,6 +181,7 @@ func (cfgCtlr *configController) Handle(ctx context.Context, requestDigest Reque
 			metrics.ObserveWaitingDuration(ctx, pl.Name, fs.Name, strconv.FormatBool(req != nil), time.Since(startWaitingTime))
 		}
 		metrics.AddDispatch(ctx, pl.Name, fs.Name)
+		fqs.OnRequestDispatched(req)
 		executed = true
 		startExecutionTime := time.Now()
 		defer func() {

staging/src/k8s.io/apiserver/pkg/util/flowcontrol/debug/dump.go

@@ -30,6 +30,10 @@ type QueueSetDump struct {
 	Executing    int
 	SeatsInUse   int
 	SeatsWaiting int
+	Dispatched   int
+	Rejected     int
+	Timedout     int
+	Cancelled    int
 }
 
 // QueueDump is an instant dump of one queue in a queue-set.

staging/src/k8s.io/apiserver/pkg/util/flowcontrol/fairqueuing/queueset/queueset.go

@@ -148,6 +148,22 @@ type queueSet struct {
 
 	// enqueues is the number of requests that have ever been enqueued
 	enqueues int
+
+	// totRequestsDispatched is the total number of requests of this
+	// queueSet that have been processed.
+	totRequestsDispatched int
+
+	// totRequestsRejected is the total number of requests of this
+	// queueSet that have been rejected.
+	totRequestsRejected int
+
+	// totRequestsTimedout is the total number of requests of this
+	// queueSet that have been timeouted.
+	totRequestsTimedout int
+
+	// totRequestsCancelled is the total number of requests of this
+	// queueSet that have been cancelled.
+	totRequestsCancelled int
 }
 
 // NewQueueSetFactory creates a new QueueSetFactory object
@@ -304,6 +320,7 @@ func (qs *queueSet) StartRequest(ctx context.Context, workEstimate *fqrequest.Wo
 		if !qs.canAccommodateSeatsLocked(workEstimate.MaxSeats()) {
 			klog.V(5).Infof("QS(%s): rejecting request %q %#+v %#+v because %d seats are asked for, %d seats are in use (%d are executing) and the limit is %d",
 				qs.qCfg.Name, fsName, descr1, descr2, workEstimate, qs.totSeatsInUse, qs.totRequestsExecuting, qs.dCfg.ConcurrencyLimit)
+			qs.totRequestsRejected++
 			metrics.AddReject(ctx, qs.qCfg.Name, fsName, "concurrency-limit")
 			return nil, qs.isIdleLocked()
 		}
@@ -323,6 +340,7 @@ func (qs *queueSet) StartRequest(ctx context.Context, workEstimate *fqrequest.Wo
 	// concurrency shares and at max queue length already
 	if req == nil {
 		klog.V(5).Infof("QS(%s): rejecting request %q %#+v %#+v due to queue full", qs.qCfg.Name, fsName, descr1, descr2)
+		qs.totRequestsRejected++
 		metrics.AddReject(ctx, qs.qCfg.Name, fsName, "queue-full")
 		return nil, qs.isIdleLocked()
 	}
@@ -400,6 +418,8 @@ func (req *request) wait() (bool, bool) {
 	switch decisionAny {
 	case decisionReject:
 		klog.V(5).Infof("QS(%s): request %#+v %#+v timed out after being enqueued\n", qs.qCfg.Name, req.descr1, req.descr2)
+		qs.totRequestsRejected++
+		qs.totRequestsTimedout++
 		metrics.AddReject(req.ctx, qs.qCfg.Name, req.fsName, "time-out")
 		return false, qs.isIdleLocked()
 	case decisionCancel:
@@ -418,6 +438,8 @@ func (req *request) wait() (bool, bool) {
 		defer qs.boundNextDispatchLocked(queue)
 		qs.totRequestsWaiting--
 		qs.totSeatsWaiting -= req.MaxSeats()
+		qs.totRequestsRejected++
+		qs.totRequestsCancelled++
 		metrics.AddReject(req.ctx, qs.qCfg.Name, req.fsName, "cancelled")
 		metrics.AddRequestsInQueues(req.ctx, qs.qCfg.Name, req.fsName, -1)
 		req.NoteQueued(false)
@@ -1038,9 +1060,27 @@ func (qs *queueSet) Dump(includeRequestDetails bool) debug.QueueSetDump {
 		Executing:    qs.totRequestsExecuting,
 		SeatsInUse:   qs.totSeatsInUse,
 		SeatsWaiting: qs.totSeatsWaiting,
+		Dispatched:   qs.totRequestsDispatched,
+		Rejected:     qs.totRequestsRejected,
+		Timedout:     qs.totRequestsTimedout,
+		Cancelled:    qs.totRequestsCancelled,
 	}
 	for i, q := range qs.queues {
 		d.Queues[i] = q.dumpLocked(includeRequestDetails)
 	}
 	return d
 }
+
+func OnRequestDispatched(r fq.Request) {
+	req, ok := r.(*request)
+	if !ok {
+		return
+	}
+
+	qs := req.qs
+	if qs != nil {
+		qs.lock.Lock()
+		defer qs.lock.Unlock()
+		qs.totRequestsDispatched++
+	}
+}