test/hotspot/jtreg/gc/shenandoah/TestStringDedupStress.java

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--- 1,8 ---
  /*
   * Copyright (c) 2017, 2021, Red Hat, Inc. All rights reserved.
+  * Copyright Amazon.com Inc. 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
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.

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   *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
   *      -XX:-ShenandoahDegeneratedGC
   *      TestStringDedupStress
   */
  
+ /*
+  * @test id=generational
+  * @summary Test Shenandoah string deduplication implementation
+  * @key randomness
+  * @requires vm.gc.Shenandoah
+  * @library /test/lib
+  * @modules java.base/java.lang:open
+  *          java.management
+  *
+  * @run main/othervm -Xmx1g -Xlog:gc+stats -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseStringDeduplication
+  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational
+  *      -XX:+ShenandoahDegeneratedGC
+  *      -DtargetStrings=3000000
+  *      TestStringDedupStress
+  */
+ 
  /*
   * @test id=default
   * @summary Test Shenandoah string deduplication implementation
   * @key randomness
   * @requires vm.gc.Shenandoah