--- /dev/null	2018-06-17 23:18:20.806999507 +0800
+++ new/test/jdk/jfr/event/runtime/TestJavaThreadStatisticsEvent.java	2019-01-29 11:04:33.501982508 +0800
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2013, 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.event.runtime;
+
+import static jdk.testlibrary.Asserts.assertTrue;
+
+import java.time.Duration;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.testlibrary.jfr.EventNames;
+import jdk.testlibrary.jfr.Events;
+
+/*
+ * @test
+ * @key jfr
+ * @library /lib/testlibrary
+ * @run main/othervm jdk.jfr.event.runtime.TestJavaThreadStatisticsEvent
+ */
+public class TestJavaThreadStatisticsEvent {
+    private static final String EVENT_NAME = EventNames.JavaThreadStatistics;
+
+    private static final int THREAD_COUNT = 10;
+    private static final Random RAND = new Random(4711);
+
+    // verify thread count: 0 <= daemon <= active <= peak <= accumulated.
+    public static void main(String[] args) throws Throwable {
+        Recording recording = new Recording();
+        recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(10));
+        recording.start();
+
+        List<Thread> threads = new ArrayList<>();
+        for (int i = 0; i < THREAD_COUNT; i++) {
+            Thread thread = new Thread(TestJavaThreadStatisticsEvent::sleepRandom);
+            thread.start();
+            threads.add(thread);
+        }
+        for (Thread thread : threads) {
+            thread.join();
+        }
+
+        recording.stop();
+        List<RecordedEvent> events = Events.fromRecording(recording);
+        boolean isAnyFound = false;
+        for (RecordedEvent event : events) {
+            System.out.println("Event:" + event);
+            isAnyFound = true;
+            // verify thread count: 0 <= daemon <= active <= peak <= accumulated.
+            long daemonCount = Events.assertField(event, "daemonCount").atLeast(0L).getValue();
+            long activeCount = Events.assertField(event, "activeCount").atLeast(daemonCount).getValue();
+            long peakCount = Events.assertField(event, "peakCount").atLeast(activeCount).atLeast(1L).getValue();
+            Events.assertField(event, "accumulatedCount").atLeast(peakCount).getValue();
+        }
+        assertTrue(isAnyFound, "Correct event not found");
+    }
+
+    static void sleepRandom() {
+        try {
+            Thread.sleep(RAND.nextInt(10));
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+}