--- /dev/null	2018-11-26 11:49:18.255023023 +0100
+++ new/test/hotspot/jtreg/gc/shenandoah/mxbeans/PauseNotifications.java	2018-11-26 21:30:40.670776769 +0100
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2018, Red Hat, Inc. All rights reserved.
+ *
+ * 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 PauseNotifications
+ * @summary Check that MX notifications are reported for all cycles
+ *
+ * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=passive       -XX:+ShenandoahDegeneratedGC PauseNotifications
+ * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=passive       -XX:-ShenandoahDegeneratedGC PauseNotifications
+ *
+ * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive    PauseNotifications
+ *
+ * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive      PauseNotifications
+ * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static        PauseNotifications
+ * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact       PauseNotifications
+ * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=traversal     PauseNotifications
+ */
+
+import java.util.*;
+import java.util.concurrent.atomic.*;
+import javax.management.*;
+import java.lang.management.*;
+import javax.management.openmbean.*;
+import com.sun.management.GarbageCollectionNotificationInfo;
+
+public class PauseNotifications {
+
+  static final long HEAP_MB   = 128;                           // adjust for test configuration above
+  static final long TARGET_MB = Long.getLong("target", 8_000); // 8 Gb allocation
+
+  static volatile Object sink;
+
+  public static void main(String[] args) throws Exception {
+    final AtomicLong pausesDuration = new AtomicLong();
+    final AtomicLong cyclesDuration = new AtomicLong();
+
+    NotificationListener listener = new NotificationListener() {
+      @Override
+      public void handleNotification(Notification n, Object o) {
+        if (n.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
+          GarbageCollectionNotificationInfo info = GarbageCollectionNotificationInfo.from((CompositeData)n.getUserData());
+
+          System.out.println(info.getGcInfo().toString());
+          System.out.println(info.getGcName());
+          System.out.println();
+
+          long d = info.getGcInfo().getDuration();
+
+          String name = info.getGcName();
+          if (name.contains("Shenandoah")) {
+            if (name.equals("Shenandoah Pauses")) {
+              pausesDuration.addAndGet(d);
+            } else if (name.equals("Shenandoah Cycles")) {
+              cyclesDuration.addAndGet(d);
+            } else {
+              throw new IllegalStateException("Unknown name: " + name);
+            }
+          }
+        }
+      }
+    };
+
+    for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
+      ((NotificationEmitter) bean).addNotificationListener(listener, null, null);
+    }
+
+    final int size = 100_000;
+    long count = TARGET_MB * 1024 * 1024 / (16 + 4*size);
+
+    for (int c = 0; c < count; c++) {
+       sink = new int[size];
+    }
+
+    Thread.sleep(1000);
+
+    long pausesActual = pausesDuration.get();
+    long cyclesActual = cyclesDuration.get();
+
+    long minExpected = 1;
+    long maxExpected = Long.MAX_VALUE;
+
+    {
+      String msg = "Pauses expected = [" + minExpected + "; " + maxExpected + "], actual = " + pausesActual;
+      if (minExpected < pausesActual && pausesActual < maxExpected) {
+        System.out.println(msg);
+      } else {
+        throw new IllegalStateException(msg);
+      }
+    }
+
+    {
+      String msg = "Cycles expected = [" + minExpected + "; " + maxExpected + "], actual = " + cyclesActual;
+      if (minExpected < cyclesActual && cyclesActual < maxExpected) {
+        System.out.println(msg);
+      } else {
+        throw new IllegalStateException(msg);
+      }
+    }
+
+    {
+      String msg = "Cycle duration (" + cyclesActual + "), pause duration (" + pausesActual + ")";
+      if (pausesActual < cyclesActual) {
+        System.out.println(msg);
+      } else {
+        throw new IllegalStateException(msg);
+      }
+    }
+  }
+}