diff --git a/test/integration/scheduler_perf/config/performance-config.yaml b/test/integration/scheduler_perf/config/performance-config.yaml
index c01f32bf717..892c2437ad4 100644
--- a/test/integration/scheduler_perf/config/performance-config.yaml
+++ b/test/integration/scheduler_perf/config/performance-config.yaml
@@ -1450,7 +1450,7 @@
     skipWaitToCompletion: true
     # Wait to make sure gated pods are enqueued in scheduler.
   - opcode: sleep
-    duration: 5s
+    durationParam: $sleepDuration
     # Create pods that will be gradually deleted after being scheduled.
   - opcode: createPods
     countParam: $deletingPods
@@ -1471,6 +1471,7 @@
       gatedPods: 10
       deletingPods: 10
       measurePods: 10
+      sleepDuration: 1s
   - name: 1Node_10000GatedPods
     labels: [performance, short]
     threshold: 130
@@ -1478,6 +1479,7 @@
       gatedPods: 10000
       deletingPods: 20000
       measurePods: 20000
+      sleepDuration: 5s
 
 - name: SchedulingGatedPodsWithPodAffinityImpactForThroughput
   defaultPodTemplatePath: config/templates/pod-with-label.yaml
@@ -1491,7 +1493,7 @@
     skipWaitToCompletion: true
   - opcode: sleep
     # To produce a stable scheduler_perf result, here we make sure all gated Pods are stored in the scheduling queue.
-    duration: 5s
+    durationParam: $sleepDuration
   - opcode: createPods
     # The scheduling of those Pods will result in many cluster events (AssignedPodAdded)
     # and each of them will be processed by the scheduling queue.
@@ -1504,12 +1506,14 @@
     params:
       gatedPods: 10
       measurePods: 10
+      sleepDuration: 1s
   - name: 1Node_10000GatedPods
     labels: [performance, short]
     threshold: 110
     params:
       gatedPods: 10000
       measurePods: 20000
+      sleepDuration: 5s
 
 # This test case simulates the scheduling when pods selected to schedule have deletionTimestamp set.
 # There was a memory leak related to this path of code fixed in:
diff --git a/test/integration/scheduler_perf/scheduler_perf.go b/test/integration/scheduler_perf/scheduler_perf.go
index 5b97d69275d..a90d40ca729 100644
--- a/test/integration/scheduler_perf/scheduler_perf.go
+++ b/test/integration/scheduler_perf/scheduler_perf.go
@@ -835,22 +835,10 @@ func (bo barrierOp) patchParams(w *workload) (realOp, error) {
 type sleepOp struct {
 	// Must be "sleep".
 	Opcode operationCode
-	// duration of sleep.
-	Duration time.Duration
-}
-
-func (so *sleepOp) UnmarshalJSON(data []byte) (err error) {
-	var tmp struct {
-		Opcode   operationCode
-		Duration string
-	}
-	if err = json.Unmarshal(data, &tmp); err != nil {
-		return err
-	}
-
-	so.Opcode = tmp.Opcode
-	so.Duration, err = time.ParseDuration(tmp.Duration)
-	return err
+	// Duration of sleep.
+	Duration metav1.Duration
+	// Template parameter for Duration.
+	DurationParam string
 }
 
 func (so *sleepOp) isValid(_ bool) error {
@@ -861,7 +849,16 @@ func (so *sleepOp) collectsMetrics() bool {
 	return false
 }
 
-func (so sleepOp) patchParams(_ *workload) (realOp, error) {
+func (so sleepOp) patchParams(w *workload) (realOp, error) {
+	if so.DurationParam != "" {
+		durationStr, err := getParam[string](w.Params, so.DurationParam[1:])
+		if err != nil {
+			return nil, err
+		}
+		if so.Duration.Duration, err = time.ParseDuration(durationStr); err != nil {
+			return nil, fmt.Errorf("invalid duration parameter %s: %w", so.DurationParam, err)
+		}
+	}
 	return &so, nil
 }
 
@@ -1580,7 +1577,7 @@ func runWorkload(tCtx ktesting.TContext, tc *testCase, w *workload, informerFact
 		case *sleepOp:
 			select {
 			case <-tCtx.Done():
-			case <-time.After(concreteOp.Duration):
+			case <-time.After(concreteOp.Duration.Duration):
 			}
 
 		case *startCollectingMetricsOp: