--- /dev/null	2017-11-09 09:38:01.297999907 +0100
+++ new/test/jdk/jdk/jfr/event/gc/heapsummary/TestHeapSummaryCommittedSize.java	2018-04-09 17:56:27.630646973 +0200
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2013, 2018, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package jdk.jfr.event.gc.heapsummary;
+
+import java.time.Duration;
+
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.test.lib.Asserts;
+import jdk.test.lib.jfr.EventNames;
+import jdk.test.lib.jfr.EventVerifier;
+import jdk.test.lib.jfr.Events;
+import jdk.test.lib.jfr.GCHelper;
+import sun.hotspot.WhiteBox;
+
+/*
+ * @test
+ * @key jfr
+ * @requires vm.gc == "Parallel" | vm.gc == null
+ * @library /test/lib /test/jdk
+ * @build sun.hotspot.WhiteBox
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main/othervm -XX:+UnlockExperimentalVMOptions
+                     -XX:-UseFastUnorderedTimeStamps -Xmx16m -XX:+UseParallelGC
+                     -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
+                     jdk.jfr.event.gc.heapsummary.TestHeapSummaryCommittedSize
+ */
+public class TestHeapSummaryCommittedSize {
+    private final static String EVENT_NAME = EventNames.GCHeapSummary;
+
+    public static void main(String[] args) throws Exception {
+        Recording recording = new Recording();
+        recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0));
+
+        recording.start();
+        System.gc();
+        recording.stop();
+
+        boolean isAnyFound = false;
+        for (RecordedEvent event : Events.fromRecording(recording)) {
+            System.out.println("Event: " + event);
+            if (!Events.isEventType(event, EVENT_NAME)) {
+                continue;
+            }
+            isAnyFound = true;
+            CommittedHeapSizeVerifier verifier = new CommittedHeapSizeVerifier(event);
+            verifier.verify();
+        }
+        Asserts.assertTrue(isAnyFound, "No matching event");
+    }
+}
+
+class CommittedHeapSizeVerifier extends EventVerifier {
+    private final static long  MAX_UNALIGNED_COMMITTED_SIZE  = 16 * 1024 * 1024;
+    private final long  MAX_ALIGNED_COMMITTED_SIZE;
+
+    public CommittedHeapSizeVerifier(RecordedEvent event) {
+        super(event);
+        WhiteBox wb = WhiteBox.getWhiteBox();
+        long heapAlignment = wb.getHeapAlignment();
+        MAX_ALIGNED_COMMITTED_SIZE = GCHelper.alignUp(
+                MAX_UNALIGNED_COMMITTED_SIZE,heapAlignment);
+    }
+
+    public void verify() throws Exception {
+        Events.assertField(event, "heapSpace.committedSize").atLeast(0L).atMost(MAX_ALIGNED_COMMITTED_SIZE);
+    }
+}