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 *
70 * @requires vm.gc.Shenandoah
71 *
72 * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
73 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
74 * -Dprecise=false
75 * TestChurnNotifications
76 */
77
78 /*
79 * @test id=compact
80 * @summary Check that MX notifications are reported for all cycles
81 * @library /test/lib /
82 * @requires vm.gc.Shenandoah
83 *
84 * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
85 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
86 * -Dprecise=false
87 * TestChurnNotifications
88 */
89
90 import java.util.*;
91 import java.util.concurrent.atomic.*;
92 import javax.management.*;
93 import java.lang.management.*;
94 import javax.management.openmbean.*;
95
96 import jdk.test.lib.Utils;
97
98 import com.sun.management.GarbageCollectionNotificationInfo;
99
100 public class TestChurnNotifications {
101
102 static final long HEAP_MB = 128; // adjust for test configuration above
103 static final long TARGET_MB = Long.getLong("target", 2_000); // 2 Gb allocation
104
105 // Should we track the churn precisely?
106 // Precise tracking is only reliable when GC is fully stop-the-world. Otherwise,
107 // we cannot tell, looking at heap used before/after, what was the GC churn.
108 static final boolean PRECISE = Boolean.getBoolean("precise");
109
110 static final long M = 1024 * 1024;
111
112 static volatile Object sink;
113
114 public static void main(String[] args) throws Exception {
115 final long startTimeNanos = System.nanoTime();
116
117 final AtomicLong churnBytes = new AtomicLong();
118
119 NotificationListener listener = new NotificationListener() {
120 @Override
121 public void handleNotification(Notification n, Object o) {
122 if (n.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
123 GarbageCollectionNotificationInfo info = GarbageCollectionNotificationInfo.from((CompositeData) n.getUserData());
124 Map<String, MemoryUsage> mapBefore = info.getGcInfo().getMemoryUsageBeforeGc();
125 Map<String, MemoryUsage> mapAfter = info.getGcInfo().getMemoryUsageAfterGc();
126
127 MemoryUsage before = mapBefore.get("Shenandoah");
128 MemoryUsage after = mapAfter.get("Shenandoah");
129
130 if ((before != null) && (after != null)) {
131 long diff = before.getUsed() - after.getUsed();
132 if (diff > 0) {
133 churnBytes.addAndGet(diff);
134 }
135 }
136 }
137 }
138 };
139
140 for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
141 ((NotificationEmitter) bean).addNotificationListener(listener, null, null);
142 }
143
144 final int size = 100_000;
145 long count = TARGET_MB * 1024 * 1024 / (16 + 4 * size);
146
147 long mem = count * (16 + 4 * size);
148
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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 *
71 * @requires vm.gc.Shenandoah
72 *
73 * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
74 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
75 * -Dprecise=false
76 * TestChurnNotifications
77 */
78
79 /*
80 * @test id=compact
81 * @summary Check that MX notifications are reported for all cycles
82 * @library /test/lib /
83 * @requires vm.gc.Shenandoah
84 *
85 * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
86 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
87 * -Dprecise=false
88 * TestChurnNotifications
89 */
90
91 /*
92 * @test id=generational
93 * @summary Check that MX notifications are reported for all cycles
94 * @library /test/lib /
95 * @requires vm.gc.Shenandoah
96 *
97 * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
98 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational
99 * -Dprecise=false -Dmem.pool=Young
100 * TestChurnNotifications
101 */
102
103 import java.util.*;
104 import java.util.concurrent.atomic.*;
105 import javax.management.*;
106 import java.lang.management.*;
107 import javax.management.openmbean.*;
108
109 import jdk.test.lib.Utils;
110
111 import com.sun.management.GarbageCollectionNotificationInfo;
112
113 public class TestChurnNotifications {
114
115 static final long HEAP_MB = 128; // adjust for test configuration above
116 static final long TARGET_MB = Long.getLong("target", 2_000); // 2 Gb allocation
117
118 // Should we track the churn precisely?
119 // Precise tracking is only reliable when GC is fully stop-the-world. Otherwise,
120 // we cannot tell, looking at heap used before/after, what was the GC churn.
121 static final boolean PRECISE = Boolean.getBoolean("precise");
122
123 static final long M = 1024 * 1024;
124
125 static volatile Object sink;
126
127 private static final String POOL_NAME = "Young".equals(System.getProperty("mem.pool")) ? "Shenandoah Young Gen" : "Shenandoah";
128
129 public static void main(String[] args) throws Exception {
130 final long startTimeNanos = System.nanoTime();
131
132 final AtomicLong churnBytes = new AtomicLong();
133
134 NotificationListener listener = new NotificationListener() {
135 @Override
136 public void handleNotification(Notification n, Object o) {
137 if (n.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
138 GarbageCollectionNotificationInfo info = GarbageCollectionNotificationInfo.from((CompositeData) n.getUserData());
139 Map<String, MemoryUsage> mapBefore = info.getGcInfo().getMemoryUsageBeforeGc();
140 Map<String, MemoryUsage> mapAfter = info.getGcInfo().getMemoryUsageAfterGc();
141
142 MemoryUsage before = mapBefore.get(POOL_NAME);
143 MemoryUsage after = mapAfter.get(POOL_NAME);
144
145 if ((before != null) && (after != null)) {
146 long diff = before.getUsed() - after.getUsed();
147 if (diff > 0) {
148 churnBytes.addAndGet(diff);
149 }
150 }
151 }
152 }
153 };
154
155 for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
156 ((NotificationEmitter) bean).addNotificationListener(listener, null, null);
157 }
158
159 final int size = 100_000;
160 long count = TARGET_MB * 1024 * 1024 / (16 + 4 * size);
161
162 long mem = count * (16 + 4 * size);
163
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