--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/gc/epsilon/TestElasticTLABDecay.java	Tue Jun 12 15:03:00 2018 +0200
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2017, 2018, Red Hat, Inc. 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.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test TestElasticTLABDecay
+ * @key gc
+ * @requires vm.gc.Epsilon
+ * @summary Epsilon is able to work with/without elastic TLABs
+ *
+ * @run main/othervm -Xmx1g -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:+EpsilonElasticTLAB -XX:-EpsilonElasticTLABDecay                               TestElasticTLABDecay
+ * @run main/othervm -Xmx1g -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:+EpsilonElasticTLAB -XX:+EpsilonElasticTLABDecay -XX:EpsilonTLABDecayTime=1    TestElasticTLABDecay
+ * @run main/othervm -Xmx1g -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -XX:+EpsilonElasticTLAB -XX:+EpsilonElasticTLABDecay -XX:EpsilonTLABDecayTime=100  TestElasticTLABDecay
+ */
+
+import java.util.Random;
+
+public class TestElasticTLABDecay {
+
+  static long SEED = Long.getLong("seed", System.nanoTime());
+  static int COUNT = Integer.getInteger("count", 3000); // ~500 MB allocation
+
+  static byte[][] arr;
+
+  public static void main(String[] args) throws Exception {
+    Random r = new Random(SEED);
+
+    arr = new byte[COUNT * 100][];
+    for (int c = 0; c < COUNT; c++) {
+      arr[c] = new byte[c * 100];
+      for (int v = 0; v < c; v++) {
+        arr[c][v] = (byte)(r.nextInt(255) & 0xFF);
+      }
+      Thread.sleep(5);
+    }
+
+    r = new Random(SEED);
+    for (int c = 0; c < COUNT; c++) {
+      byte[] b = arr[c];
+      if (b.length != (c * 100)) {
+        throw new IllegalStateException("Failure: length = " + b.length + ", need = " + (c*100));
+      }
+      for (int v = 0; v < c; v++) {
+        byte actual = b[v];
+        byte expected = (byte)(r.nextInt(255) & 0xFF);
+        if (actual != expected) {
+          throw new IllegalStateException("Failure: expected = " + expected + ", actual = " + actual);
+        }
+      }
+    }
+  }
+}