diff --git a/test/hotspot/jtreg/serviceability/jvmti/vthread/SuspendResume1/SuspendResume1.java b/test/hotspot/jtreg/serviceability/jvmti/vthread/SuspendResume1/SuspendResume1.java
index e4673c3d017..39f9a1ab2ae 100644
--- a/test/hotspot/jtreg/serviceability/jvmti/vthread/SuspendResume1/SuspendResume1.java
+++ b/test/hotspot/jtreg/serviceability/jvmti/vthread/SuspendResume1/SuspendResume1.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -164,11 +164,11 @@ class TestedThread extends Thread {
         // run in a loop
         threadReady = true;
         int i = 0;
-        int n = 1000;
+        int n = 100;
         while (!shouldFinish) {
             if (n <= 0) {
-                n = 1000;
-                SuspendResume1.sleep(10);
+                n = 100;
+                SuspendResume1.sleep(50);
             }
             if (i > n) {
                 i = 0;
diff --git a/test/hotspot/jtreg/serviceability/jvmti/vthread/SuspendResume2/SuspendResume2.java b/test/hotspot/jtreg/serviceability/jvmti/vthread/SuspendResume2/SuspendResume2.java
index 7c7d21160ae..b773cf3fa0a 100644
--- a/test/hotspot/jtreg/serviceability/jvmti/vthread/SuspendResume2/SuspendResume2.java
+++ b/test/hotspot/jtreg/serviceability/jvmti/vthread/SuspendResume2/SuspendResume2.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -158,11 +158,11 @@ class TestedThread extends Thread {
         // run in a loop
         threadReady = true;
         int i = 0;
-        int n = 1000;
+        int n = 100;
         while (!shouldFinish) {
             if (n <= 0) {
-                n = 1000;
-                SuspendResume2.sleep(10);
+                n = 100;
+                SuspendResume2.sleep(50);
             }
             if (i > n) {
                 i = 0;
diff --git a/test/hotspot/jtreg/serviceability/jvmti/vthread/SuspendResumeAll/SuspendResumeAll.java b/test/hotspot/jtreg/serviceability/jvmti/vthread/SuspendResumeAll/SuspendResumeAll.java
index 342ba3ea996..35ea1611453 100644
--- a/test/hotspot/jtreg/serviceability/jvmti/vthread/SuspendResumeAll/SuspendResumeAll.java
+++ b/test/hotspot/jtreg/serviceability/jvmti/vthread/SuspendResumeAll/SuspendResumeAll.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -155,12 +155,12 @@ class TestedThread extends Thread {
         // run in a loop
         threadReady = true;
         int i = 0;
-        int n = 1000;
+        int n = 100;
         while (!shouldFinish) {
             breakpointCheck();
             if (n <= 0) {
-                n = 1000;
-                SuspendResumeAll.sleep(1);
+                n = 100;
+                SuspendResumeAll.sleep(50);
             }
             if (i > n) {
                 i = 0;