diff --git a/test/hotspot/jtreg/vmTestbase/gc/gctests/AllocateWithoutOomTest/AllocateWithoutOomTest.java b/test/hotspot/jtreg/vmTestbase/gc/gctests/AllocateWithoutOomTest/AllocateWithoutOomTest.java
index 51307bb996c..a1bd7acedeb 100644
--- a/test/hotspot/jtreg/vmTestbase/gc/gctests/AllocateWithoutOomTest/AllocateWithoutOomTest.java
+++ b/test/hotspot/jtreg/vmTestbase/gc/gctests/AllocateWithoutOomTest/AllocateWithoutOomTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 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
@@ -37,7 +37,7 @@
  *
  * @library /vmTestbase
  *          /test/lib
- * @run main/othervm
+ * @run main/othervm/timeout=480
  *      -XX:-UseGCOverheadLimit
  *      gc.gctests.AllocateWithoutOomTest.AllocateWithoutOomTest
  */
diff --git a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_InternedStrings_Strings/TestDescription.java b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_InternedStrings_Strings/TestDescription.java
index 4e11e51a894..ad7db17e412 100644
--- a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_InternedStrings_Strings/TestDescription.java
+++ b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_InternedStrings_Strings/TestDescription.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 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
@@ -36,7 +36,7 @@
  *
  * @library /vmTestbase
  *          /test/lib
- * @run main/othervm
+ * @run main/othervm/timeout=480
  *      -XX:-UseGCOverheadLimit
  *      vm.gc.compact.Compact
  *      -gp interned(randomString)
diff --git a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_NonbranchyTree/TestDescription.java b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_NonbranchyTree/TestDescription.java
index b058bb2c84d..be4f9f673b7 100644
--- a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_NonbranchyTree/TestDescription.java
+++ b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_NonbranchyTree/TestDescription.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 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
@@ -36,7 +36,7 @@
  *
  * @library /vmTestbase
  *          /test/lib
- * @run main/othervm
+ * @run main/othervm/timeout=480
  *      -XX:-UseGCOverheadLimit
  *      vm.gc.compact.Compact
  *      -gp nonbranchyTree(high)
diff --git a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_NonbranchyTree_ArrayOf/TestDescription.java b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_NonbranchyTree_ArrayOf/TestDescription.java
index 3beeaa76a84..2ca21ae2ee6 100644
--- a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_NonbranchyTree_ArrayOf/TestDescription.java
+++ b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_NonbranchyTree_ArrayOf/TestDescription.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 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
@@ -36,7 +36,7 @@
  *
  * @library /vmTestbase
  *          /test/lib
- * @run main/othervm
+ * @run main/othervm/timeout=480
  *      -XX:-UseGCOverheadLimit
  *      vm.gc.compact.Compact
  *      -gp nonbranchyTree(high)
diff --git a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_NonbranchyTree_TwoFields/TestDescription.java b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_NonbranchyTree_TwoFields/TestDescription.java
index c1421263a48..01dc687251b 100644
--- a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_NonbranchyTree_TwoFields/TestDescription.java
+++ b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_NonbranchyTree_TwoFields/TestDescription.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 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
@@ -36,7 +36,7 @@
  *
  * @library /vmTestbase
  *          /test/lib
- * @run main/othervm
+ * @run main/othervm/timeout=480
  *      -XX:-UseGCOverheadLimit
  *      vm.gc.compact.Compact
  *      -gp nonbranchyTree(high)
diff --git a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_Strings/TestDescription.java b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_Strings/TestDescription.java
index 207822c666b..9ba96b7e493 100644
--- a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_Strings/TestDescription.java
+++ b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_Strings/TestDescription.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 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
@@ -36,7 +36,7 @@
  *
  * @library /vmTestbase
  *          /test/lib
- * @run main/othervm
+ * @run main/othervm/timeout=480
  *      -XX:-UseGCOverheadLimit
  *      vm.gc.compact.Compact
  *      -gp randomString
diff --git a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_Strings_InternedStrings/TestDescription.java b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_Strings_InternedStrings/TestDescription.java
index 705e47ea68b..30dcfc7502e 100644
--- a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_Strings_InternedStrings/TestDescription.java
+++ b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_Strings_InternedStrings/TestDescription.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 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
@@ -36,7 +36,7 @@
  *
  * @library /vmTestbase
  *          /test/lib
- * @run main/othervm
+ * @run main/othervm/timeout=480
  *      -XX:-UseGCOverheadLimit
  *      vm.gc.compact.Compact
  *      -gp randomString
diff --git a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_Strings_TwoFields/TestDescription.java b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_Strings_TwoFields/TestDescription.java
index 7d5ddc36fcb..8a62d4b07eb 100644
--- a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_Strings_TwoFields/TestDescription.java
+++ b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Compact_Strings_TwoFields/TestDescription.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 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
@@ -36,7 +36,7 @@
  *
  * @library /vmTestbase
  *          /test/lib
- * @run main/othervm
+ * @run main/othervm/timeout=480
  *      -XX:-UseGCOverheadLimit
  *      vm.gc.compact.Compact
  *      -gp randomString
diff --git a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Humongous_NonbranchyTree/TestDescription.java b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Humongous_NonbranchyTree/TestDescription.java
index 38c5b1e6bab..c9c117f0b0e 100644
--- a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Humongous_NonbranchyTree/TestDescription.java
+++ b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Humongous_NonbranchyTree/TestDescription.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 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
@@ -36,7 +36,7 @@
  *
  * @library /vmTestbase
  *          /test/lib
- * @run main/othervm
+ * @run main/othervm/timeout=480
  *      -XX:-UseGCOverheadLimit
  *      vm.gc.compact.Compact
  *      -gp nonbranchyTree(high)
diff --git a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Humongous_Strings/TestDescription.java b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Humongous_Strings/TestDescription.java
index 88d11739141..7d4b6ae3a21 100644
--- a/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Humongous_Strings/TestDescription.java
+++ b/test/hotspot/jtreg/vmTestbase/vm/gc/compact/Humongous_Strings/TestDescription.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 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
@@ -36,7 +36,7 @@
  *
  * @library /vmTestbase
  *          /test/lib
- * @run main/othervm
+ * @run main/othervm/timeout=480
  *      -XX:-UseGCOverheadLimit
  *      vm.gc.compact.Compact
  *      -gp randomString