X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/7f4da9388e3d5ec8f38f6d6408916d1d46dfb10f..d104886f95ab9bf0712873c809410b34f8bed031:/lib/dispatchcloud/scheduler/scheduler.go

diff --git a/lib/dispatchcloud/scheduler/scheduler.go b/lib/dispatchcloud/scheduler/scheduler.go
index 6fd47e9194..c3e67dd11f 100644
--- a/lib/dispatchcloud/scheduler/scheduler.go
+++ b/lib/dispatchcloud/scheduler/scheduler.go
@@ -11,6 +11,7 @@ import (
 	"sync"
 	"time"
 
+	"git.arvados.org/arvados.git/sdk/go/arvados"
 	"git.arvados.org/arvados.git/sdk/go/ctxlog"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/sirupsen/logrus"
@@ -46,6 +47,7 @@ type Scheduler struct {
 
 	mContainersAllocatedNotStarted   prometheus.Gauge
 	mContainersNotAllocatedOverQuota prometheus.Gauge
+	mLongestWaitTimeSinceQueue       prometheus.Gauge
 }
 
 // New returns a new unstarted Scheduler.
@@ -87,6 +89,37 @@ func (sch *Scheduler) registerMetrics(reg *prometheus.Registry) {
 		Help:      "Number of containers not allocated to a worker because the system has hit a quota.",
 	})
 	reg.MustRegister(sch.mContainersNotAllocatedOverQuota)
+	sch.mLongestWaitTimeSinceQueue = prometheus.NewGauge(prometheus.GaugeOpts{
+		Namespace: "arvados",
+		Subsystem: "dispatchcloud",
+		Name:      "containers_longest_wait_time_seconds",
+		Help:      "Current longest wait time of any container since queuing, and before the start of crunch-run.",
+	})
+	reg.MustRegister(sch.mLongestWaitTimeSinceQueue)
+}
+
+func (sch *Scheduler) updateMetrics() {
+	earliest := time.Time{}
+	entries, _ := sch.queue.Entries()
+	running := sch.pool.Running()
+	for _, ent := range entries {
+		if ent.Container.Priority > 0 &&
+			(ent.Container.State == arvados.ContainerStateQueued || ent.Container.State == arvados.ContainerStateLocked) {
+			// Exclude containers that are preparing to run the payload (i.e.
+			// ContainerStateLocked and running on a worker, most likely loading the
+			// payload image
+			if _, ok := running[ent.Container.UUID]; !ok {
+				if ent.Container.CreatedAt.Before(earliest) || earliest.IsZero() {
+					earliest = ent.Container.CreatedAt
+				}
+			}
+		}
+	}
+	if !earliest.IsZero() {
+		sch.mLongestWaitTimeSinceQueue.Set(time.Since(earliest).Seconds())
+	} else {
+		sch.mLongestWaitTimeSinceQueue.Set(0)
+	}
 }
 
 // Start starts the scheduler.
@@ -141,6 +174,7 @@ func (sch *Scheduler) run() {
 	for {
 		sch.runQueue()
 		sch.sync()
+		sch.updateMetrics()
 		select {
 		case <-sch.stop:
 			return