--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/jfr/jcmd/TestJcmdStartFlushInterval.java	Wed Oct 30 19:43:52 2019 +0100
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2019, 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.jcmd;
+
+import java.time.Duration;
+
+import jdk.jfr.FlightRecorder;
+import jdk.jfr.Recording;
+
+/**
+ * @test
+ * @summary Start a recording with a flush interval
+ * @key jfr
+ * @requires vm.hasJFR
+ * @library /test/lib /test/jdk
+ * @run main/othervm jdk.jfr.jcmd.TestJcmdStartReadOnlyFile
+ */
+public class TestJcmdStartFlushInterval {
+
+    public static void main(String[] args) throws Exception {
+        JcmdHelper.jcmd("JFR.start","flush-interval=1s");
+        for (Recording r : FlightRecorder.getFlightRecorder().getRecordings()) {
+            Duration d = r.getFlushInterval();
+            if (d.equals(Duration.ofSeconds(1))) {
+                return; //OK
+            } else {
+                throw new Exception("Unexpected flush-interval=" + d);
+            }
+        }
+        throw new Exception("No recording found");
+    }
+
+}