diff -r 7a2a740815b7 -r caf115bb98ad test/jdk/jdk/jfr/api/recording/time/TestTimeMultiple.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/jfr/api/recording/time/TestTimeMultiple.java	Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 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.api.recording.time;
+
+import java.time.Instant;
+
+import jdk.jfr.Recording;
+import jdk.test.lib.Asserts;
+
+/*
+ * @test
+ * @key jfr
+ * @summary Test recording times with concurrent recordings
+ * @library /test/lib
+ * @run main/othervm jdk.jfr.api.recording.time.TestTimeMultiple
+ */
+
+public class TestTimeMultiple {
+
+    public static void main(String[] args) throws Throwable {
+        Recording rA = new Recording();
+        Asserts.assertNull(rA.getStartTime(), "getStartTime() not null before start");
+        Asserts.assertNull(rA.getStopTime(), "getStopTime() not null before start");
+
+        final Instant beforeStartA = Instant.now();
+        rA.start();
+        final Instant afterStartA = Instant.now();
+
+        Recording rB = new Recording();
+        Asserts.assertNull(rB.getStartTime(), "getStartTime() not null before start");
+        Asserts.assertNull(rB.getStopTime(), "getStopTime() not null before start");
+
+        final Instant beforeStartB = Instant.now();
+        rB.start();
+        final Instant afterStartB = Instant.now();
+
+        final Instant beforeStopB = Instant.now();
+        rB.stop();
+        final Instant afterStopB = Instant.now();
+
+        final Instant beforeStopA = Instant.now();
+        rA.stop();
+        final Instant afterStopA = Instant.now();
+
+        rA.close();
+        rB.close();
+
+        Asserts.assertNotNull(rA.getStartTime(), "getStartTime() null after start");
+        Asserts.assertNotNull(rA.getStopTime(), "getStopTime() null after stop");
+        Asserts.assertGreaterThanOrEqual(rA.getStartTime(), beforeStartA, "getStartTime() < beforeStart");
+        Asserts.assertLessThanOrEqual(rA.getStartTime(), afterStartA, "getStartTime() > afterStart");
+        Asserts.assertGreaterThanOrEqual(rA.getStopTime(), beforeStopA, "getStopTime() < beforeStop");
+        Asserts.assertLessThanOrEqual(rA.getStopTime(), afterStopA, "getStopTime() > afterStop");
+
+        Asserts.assertNotNull(rB.getStartTime(), "getStartTime() null after start");
+        Asserts.assertNotNull(rB.getStopTime(), "getStopTime() null after stop");
+        Asserts.assertGreaterThanOrEqual(rB.getStartTime(), beforeStartB, "getStartTime() < beforeStart");
+        Asserts.assertLessThanOrEqual(rB.getStartTime(), afterStartB, "getStartTime() > afterStart");
+        Asserts.assertGreaterThanOrEqual(rB.getStopTime(), beforeStopB, "getStopTime() < beforeStop");
+        Asserts.assertLessThanOrEqual(rB.getStopTime(), afterStopB, "getStopTime() > afterStop");
+    }
+
+}