diff --git a/pilot/pkg/xds/discovery.go b/pilot/pkg/xds/discovery.go
index 14678389d2a9..8aa246071909 100644
--- a/pilot/pkg/xds/discovery.go
+++ b/pilot/pkg/xds/discovery.go
@@ -414,9 +414,10 @@ func debounce(ch chan *model.PushRequest, stopCh <-chan struct{}, opts debounceO
 	free := true
 	freeCh := make(chan struct{}, 1)
 
-	push := func(req *model.PushRequest, debouncedEvents int) {
+	push := func(req *model.PushRequest, debouncedEvents int, startDebounce time.Time) {
 		pushFn(req)
 		updateSent.Add(int64(debouncedEvents))
+		debounceTime.Record(time.Since(startDebounce).Seconds())
 		freeCh <- struct{}{}
 	}
 
@@ -437,7 +438,7 @@ func debounce(ch chan *model.PushRequest, stopCh <-chan struct{}, opts debounceO
 						quietTime, eventDelay, req.Full)
 				}
 				free = false
-				go push(req, debouncedEvents)
+				go push(req, debouncedEvents, startDebounce)
 				req = nil
 				debouncedEvents = 0
 			}
diff --git a/pilot/pkg/xds/monitoring.go b/pilot/pkg/xds/monitoring.go
index da0760c24efe..624931ed6100 100644
--- a/pilot/pkg/xds/monitoring.go
+++ b/pilot/pkg/xds/monitoring.go
@@ -118,6 +118,12 @@ var (
 	ldsSendErrPushes = pushes.With(typeTag.Value("lds_senderr"))
 	rdsSendErrPushes = pushes.With(typeTag.Value("rds_senderr"))
 
+	debounceTime = monitoring.NewDistribution(
+		"pilot_debounce_time",
+		"Delay in seconds between the first config enters debouncing and the merged push request is pushed into the push queue.",
+		[]float64{.01, .1, 1, 3, 5, 10, 20, 30},
+	)
+
 	pushContextInitTime = monitoring.NewDistribution(
 		"pilot_pushcontext_init_seconds",
 		"Total time in seconds Pilot takes to init pushContext.",
@@ -292,6 +298,8 @@ func init() {
 		xdsClients,
 		xdsResponseWriteTimeouts,
 		pushes,
+		debounceTime,
+		pushContextInitTime,
 		pushTime,
 		proxiesConvergeDelay,
 		proxiesQueueTime,