1 /*
2 * Copyright (c) 2020, 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 *
24 */
25
26 /**
27 * @test id=satb-adaptive
28 * @requires vm.gc.Shenandoah
29 * @library /test/lib
30 *
31 * @run main/othervm -Xms100m -Xmx512m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
32 * -XX:+UseShenandoahGC -Xlog:gc=info -Dtarget=10000
33 * -XX:ShenandoahGCMode=satb
34 * -XX:+ShenandoahDegeneratedGC
35 * -XX:ShenandoahGCHeuristics=adaptive
36 * TestDynamicSoftMaxHeapSize
37 *
38 */
39
40 /**
41 * @test id=satb-aggressive
42 * @requires vm.gc.Shenandoah
43 * @library /test/lib
44 *
45 * @run main/othervm -Xms100m -Xmx512m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
46 * -XX:+UseShenandoahGC -Xlog:gc=info -Dtarget=10000
47 * -XX:ShenandoahGCMode=satb
48 * -XX:+ShenandoahDegeneratedGC
49 * -XX:ShenandoahGCHeuristics=aggressive
50 * TestDynamicSoftMaxHeapSize
51 *
52 */
53
54 /**
55 * @test id=satb-compact
56 * @requires vm.gc.Shenandoah
57 * @library /test/lib
58 *
59 * @run main/othervm -Xms100m -Xmx512m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
60 * -XX:+UseShenandoahGC -Xlog:gc=info -Dtarget=10000
61 * -XX:ShenandoahGCMode=satb
62 * -XX:+ShenandoahDegeneratedGC
63 * -XX:ShenandoahGCHeuristics=compact
64 * TestDynamicSoftMaxHeapSize
65 *
66 */
67
68 /**
69 * @test id=satb-static
70 * @requires vm.gc.Shenandoah
71 * @library /test/lib
72 *
73 * @run main/othervm -Xms100m -Xmx512m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
74 * -XX:+UseShenandoahGC -Xlog:gc=info -Dtarget=10000
75 * -XX:ShenandoahGCMode=satb
76 * -XX:+ShenandoahDegeneratedGC
77 * -XX:ShenandoahGCHeuristics=static
78 * TestDynamicSoftMaxHeapSize
79 *
80 */
81
82 /**
83 * @test id=passive
84 * @requires vm.gc.Shenandoah
85 * @library /test/lib
86 *
87 * @run main/othervm -Xms16m -Xmx512m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
88 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
89 * -XX:+ShenandoahDegeneratedGC
90 * -Dtarget=10000
91 * TestDynamicSoftMaxHeapSize
92 *
93 * @run main/othervm -Xms16m -Xmx512m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
94 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
95 * -XX:-ShenandoahDegeneratedGC
96 * -Dtarget=10000
97 * TestDynamicSoftMaxHeapSize
98 */
99
100 /**
101 * @test id=generational
102 * @requires vm.gc.Shenandoah
103 * @library /test/lib
104 *
105 * @run main/othervm -Xms100m -Xmx512m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
106 * -XX:+UseShenandoahGC -Xlog:gc=info -Dtarget=10000
107 * -XX:ShenandoahGCMode=generational
108 * -XX:ShenandoahGCHeuristics=adaptive
109 * TestDynamicSoftMaxHeapSize
110 *
111 */
112
113 /**
114 * @test id=generational-softMaxHeapSizeValidation
115 * @requires vm.gc.Shenandoah
116 * @library /test/lib
117 *
118 * @run main/othervm -DvalidateSoftMaxHeap=true
119 * TestDynamicSoftMaxHeapSize
120 * -Xms100m -Xmx512m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
121 * -XX:+UseShenandoahGC -Xlog:gc=info -Dtarget=10000 -DverifySoftMaxHeapValue=true
122 * -XX:ShenandoahGCMode=generational
123 * -XX:ShenandoahGCHeuristics=adaptive
124 */
125 import jdk.test.lib.Utils;
126 import jdk.test.lib.process.OutputAnalyzer;
127 import jdk.test.lib.process.ProcessTools;
128 import jdk.test.lib.dcmd.PidJcmdExecutor;
129
130 import java.util.ArrayList;
131 import java.util.Arrays;
132 import java.util.List;
133 import java.util.Random;
134
135 public class TestDynamicSoftMaxHeapSize {
136 static final int K = 1024;
137 static final int XMS_MB = 100;
138 static final int XMX_MB = 512;
139
140 public static void main(String[] args) throws Exception {
141 if ("true".equals(System.getProperty("validateSoftMaxHeap"))) {
142 List<String> flagArgs = new ArrayList<>(Arrays.asList(args));
143
144 int softMaxInMb = Utils.getRandomInstance().nextInt(XMS_MB, XMX_MB);
145 flagArgs.add("-DsoftMaxCapacity=" + softMaxInMb * K * K);
146 flagArgs.add("-Dtest.jdk=" + System.getProperty("test.jdk"));
147 flagArgs.add("-Dcompile.jdk=" + System.getProperty("compile.jdk"));
148
149 flagArgs.add(SoftMaxWithExpectationTest.class.getName());
150
151 ProcessBuilder genShenPbValidateFlag = ProcessTools.createLimitedTestJavaProcessBuilder(flagArgs);
152 OutputAnalyzer output = new OutputAnalyzer(genShenPbValidateFlag.start());
153 output.shouldHaveExitValue(0);
154 output.shouldContain(String.format("Soft Max Heap Size: %dM -> %dM", XMX_MB, softMaxInMb)); // By default, the soft max heap size is Xmx
155 } else {
156 SoftMaxSetFlagOnlyTest.test();
157 }
158 }
159
160 public static class SoftMaxSetFlagOnlyTest {
161 static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation
162 static final long STRIDE = 10_000_000;
163
164 static volatile Object sink;
165
166 public static void test() throws Exception {
167 long count = TARGET_MB * 1024 * 1024 / 16;
168 Random r = Utils.getRandomInstance();
169 PidJcmdExecutor jcmd = new PidJcmdExecutor();
170
171 for (long c = 0; c < count; c += STRIDE) {
172 // Sizes specifically include heaps below Xms and above Xmx to test saturation code.
173 jcmd.execute("VM.set_flag SoftMaxHeapSize " + r.nextInt(768*1024*1024), true);
174 for (long s = 0; s < STRIDE; s++) {
175 sink = new Object();
176 }
177 Thread.sleep(1);
178 }
179 }
180 }
181
182 public static class SoftMaxWithExpectationTest {
183 static final long TOTAL = 100_000_000;
184
185 static volatile Object sink;
186
187 public static void main(String[] args) throws Exception {
188 int expectedSoftMaxHeapSize = Integer.getInteger("softMaxCapacity", 0);
189 PidJcmdExecutor jcmd = new PidJcmdExecutor();
190 jcmd.execute("VM.set_flag SoftMaxHeapSize " + expectedSoftMaxHeapSize, false);
191
192 for (long s = 0; s < TOTAL; s++) {
193 sink = new Object();
194 }
195 }
196 }
197 }