--- /dev/null	2018-06-17 23:18:20.806999507 +0800
+++ new/test/jdk/jfr/event/os/TestCPULoad.java	2019-01-29 11:04:17.794440195 +0800
@@ -0,0 +1,80 @@
+/*
+ * 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.os;
+
+import java.util.List;
+
+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.os.TestCPULoad
+ */
+public class TestCPULoad {
+    private final static String EVENT_NAME = EventNames.CPULoad;
+
+    public static void main(String[] args) throws Throwable {
+        Recording recording = new Recording();
+        recording.enable(EVENT_NAME);
+        recording.start();
+        // Need to sleep so a time delta can be calculated
+        Thread.sleep(100000);
+        recording.stop();
+        System.out.println("after recording.stop()");
+
+        List<RecordedEvent> events = Events.fromRecording(recording);
+        System.out.println("after fromRecording()");
+        if (events.isEmpty()) {
+            // CPU Load events are unreliable on Windows because
+            // the way processes are identified with perf. counters.
+            // See BUG 8010378.
+            // Workaround is to detect Windows and allow
+            // test to pass if events are missing.
+            if (isWindows()) {
+                return;
+            }
+            throw new AssertionError("Expected at least one event");
+        }
+        for (RecordedEvent event : events) {
+            System.out.println("Event: " + event);
+            for (String loadName : loadNames) {
+                Events.assertField(event, loadName).atLeast(0.0f).atMost(1.0f);
+            }
+        }
+    }
+
+    private static final String[] loadNames = {"jvmUser", "jvmSystem", "machineTotal"};
+
+    private static boolean isWindows() {
+        return System.getProperty("os.name").startsWith("Windows");
+    }
+}