1 /*
2 * Copyright (c) 2018, Red Hat, Inc. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
81 * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
82 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
83 * TestPauseNotifications
84 */
85
86 /*
87 * @test id=iu
88 * @summary Check that MX notifications are reported for all cycles
89 * @library /test/lib /
90 * @requires vm.gc.Shenandoah
91 *
92 * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
93 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
94 * TestPauseNotifications
95 *
96 * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
97 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
98 * TestPauseNotifications
99 */
100
101 import java.util.*;
102 import java.util.concurrent.atomic.*;
103 import javax.management.*;
104 import java.lang.management.*;
105 import javax.management.openmbean.*;
106
107 import jdk.test.lib.Utils;
108
109 import com.sun.management.GarbageCollectionNotificationInfo;
110
111 public class TestPauseNotifications {
112
113 static final long HEAP_MB = 128; // adjust for test configuration above
114 static final long TARGET_MB = Long.getLong("target", 2_000); // 2 Gb allocation
115
116 static volatile Object sink;
117
118 private static boolean isExpectedPauseAction(String action) {
119 return "Init Mark".equals(action) || "Final Mark".equals(action) || "Full GC".equals(action)
120 || "Degenerated GC".equals(action) || "Init Update Refs".equals(action)
121 || "Final Update Refs".equals(action) || "Final Roots".equals(action);
122 }
123
124 public static void main(String[] args) throws Exception {
125 final long startTime = System.currentTimeMillis();
126
127 final AtomicLong pausesDuration = new AtomicLong();
128 final AtomicLong cyclesDuration = new AtomicLong();
129 final AtomicLong pausesCount = new AtomicLong();
130 final AtomicLong cyclesCount = new AtomicLong();
131
132 NotificationListener listener = new NotificationListener() {
133 @Override
134 public void handleNotification(Notification n, Object o) {
135 if (n.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
136 GarbageCollectionNotificationInfo info = GarbageCollectionNotificationInfo.from((CompositeData) n.getUserData());
137
138 System.out.println("Received: " + info.getGcName() + "/" + info.getGcAction());
139
140
141 long d = info.getGcInfo().getDuration();
142
143 String name = info.getGcName();
144 if (name.contains("Shenandoah")) {
145 if (name.equals("Shenandoah Pauses")) {
156 }
157 }
158 }
159 }
160 };
161
162 for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
163 ((NotificationEmitter) bean).addNotificationListener(listener, null, null);
164 }
165
166 final int size = 100_000;
167 long count = TARGET_MB * 1024 * 1024 / (16 + 4 * size);
168
169 for (int c = 0; c < count; c++) {
170 sink = new int[size];
171 }
172
173 // Look at test timeout to figure out how long we can wait without breaking into timeout.
174 // Default to 1/4 of the remaining time in 1s steps.
175 final long STEP_MS = 1000;
176 long spentTime = System.currentTimeMillis() - startTime;
177 long maxTries = (Utils.adjustTimeout(Utils.DEFAULT_TEST_TIMEOUT) - spentTime) / STEP_MS / 4;
178
179 long actualPauses = 0;
180 long actualCycles = 0;
181
182 // Wait until enough notifications are accrued to match minimum boundary.
183 long minExpected = 10;
184
185 long tries = 0;
186 while (tries++ < maxTries) {
187 actualPauses = pausesCount.get();
188 actualCycles = cyclesCount.get();
189 if (minExpected <= actualPauses && minExpected <= actualCycles) {
190 // Wait a little bit to catch the lingering notifications.
191 Thread.sleep(5000);
192 actualPauses = pausesCount.get();
193 actualCycles = cyclesCount.get();
194 break;
195 }
196 Thread.sleep(STEP_MS);
197 }
|
1 /*
2 * Copyright (c) 2018, Red Hat, Inc. All rights reserved.
3 * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
82 * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
83 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
84 * TestPauseNotifications
85 */
86
87 /*
88 * @test id=iu
89 * @summary Check that MX notifications are reported for all cycles
90 * @library /test/lib /
91 * @requires vm.gc.Shenandoah
92 *
93 * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
94 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
95 * TestPauseNotifications
96 *
97 * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
98 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
99 * TestPauseNotifications
100 */
101
102 /*
103 * @test id=generational
104 * @summary Check that MX notifications are reported for all cycles
105 * @library /test/lib /
106 * @requires vm.gc.Shenandoah
107 *
108 * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
109 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational
110 * TestPauseNotifications
111 */
112
113 import java.util.*;
114 import java.util.concurrent.atomic.*;
115 import javax.management.*;
116 import java.lang.management.*;
117 import javax.management.openmbean.*;
118
119 import jdk.test.lib.Utils;
120
121 import com.sun.management.GarbageCollectionNotificationInfo;
122
123 public class TestPauseNotifications {
124
125 static final long HEAP_MB = 128; // adjust for test configuration above
126 static final long TARGET_MB = Long.getLong("target", 2_000); // 2 Gb allocation
127
128 static volatile Object sink;
129
130 private static boolean isExpectedPauseAction(String action) {
131 return "Init Mark".equals(action) || "Final Mark".equals(action) || "Full GC".equals(action)
132 || "Degenerated GC".equals(action) || "Init Update Refs".equals(action)
133 || "Final Update Refs".equals(action) || "Final Roots".equals(action);
134 }
135
136 public static void main(String[] args) throws Exception {
137 final long startTimeNanos = System.nanoTime();
138
139 final AtomicLong pausesDuration = new AtomicLong();
140 final AtomicLong cyclesDuration = new AtomicLong();
141 final AtomicLong pausesCount = new AtomicLong();
142 final AtomicLong cyclesCount = new AtomicLong();
143
144 NotificationListener listener = new NotificationListener() {
145 @Override
146 public void handleNotification(Notification n, Object o) {
147 if (n.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
148 GarbageCollectionNotificationInfo info = GarbageCollectionNotificationInfo.from((CompositeData) n.getUserData());
149
150 System.out.println("Received: " + info.getGcName() + "/" + info.getGcAction());
151
152
153 long d = info.getGcInfo().getDuration();
154
155 String name = info.getGcName();
156 if (name.contains("Shenandoah")) {
157 if (name.equals("Shenandoah Pauses")) {
168 }
169 }
170 }
171 }
172 };
173
174 for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
175 ((NotificationEmitter) bean).addNotificationListener(listener, null, null);
176 }
177
178 final int size = 100_000;
179 long count = TARGET_MB * 1024 * 1024 / (16 + 4 * size);
180
181 for (int c = 0; c < count; c++) {
182 sink = new int[size];
183 }
184
185 // Look at test timeout to figure out how long we can wait without breaking into timeout.
186 // Default to 1/4 of the remaining time in 1s steps.
187 final long STEP_MS = 1000;
188 long spentTimeNanos = System.nanoTime() - startTimeNanos;
189 long maxTries = (Utils.adjustTimeout(Utils.DEFAULT_TEST_TIMEOUT) - (spentTimeNanos / 1_000_000L)) / STEP_MS / 4;
190
191 long actualPauses = 0;
192 long actualCycles = 0;
193
194 // Wait until enough notifications are accrued to match minimum boundary.
195 long minExpected = 10;
196
197 long tries = 0;
198 while (tries++ < maxTries) {
199 actualPauses = pausesCount.get();
200 actualCycles = cyclesCount.get();
201 if (minExpected <= actualPauses && minExpected <= actualCycles) {
202 // Wait a little bit to catch the lingering notifications.
203 Thread.sleep(5000);
204 actualPauses = pausesCount.get();
205 actualCycles = cyclesCount.get();
206 break;
207 }
208 Thread.sleep(STEP_MS);
209 }
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