1 /*
2 * Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2016, 2018, Red Hat, Inc. All rights reserved.
4 * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
5 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 *
7 * This code is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 only, as
9 * published by the Free Software Foundation.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 *
25 */
26
27 /*
28 * @test id=passive
29 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
30 * @key randomness
31 * @requires vm.gc.Shenandoah
32 * @library /test/lib
33 *
34 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
35 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
36 * -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
37 * TestAllocHumongousFragment
38 *
39 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
40 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
41 * -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify
42 * TestAllocHumongousFragment
43 *
44 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
45 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
46 * -XX:-ShenandoahDegeneratedGC
47 * TestAllocHumongousFragment
48 *
49 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
50 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
51 * -XX:+ShenandoahDegeneratedGC
52 * TestAllocHumongousFragment
53 */
54
55 /*
56 * @test id=aggressive
57 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
58 * @key randomness
59 * @requires vm.gc.Shenandoah
60 * @library /test/lib
61 *
62 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
63 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
64 * -XX:+ShenandoahOOMDuringEvacALot -XX:+ShenandoahVerify
65 * TestAllocHumongousFragment
66 *
67 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
68 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
69 * -XX:+ShenandoahAllocFailureALot -XX:+ShenandoahVerify
70 * TestAllocHumongousFragment
71 *
72 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
73 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
74 * -XX:+ShenandoahOOMDuringEvacALot
75 * TestAllocHumongousFragment
76 *
77 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
78 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
79 * -XX:+ShenandoahAllocFailureALot
80 * TestAllocHumongousFragment
81 */
82
83 /*
84 * @test id=adaptive
85 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
86 * @key randomness
87 * @requires vm.gc.Shenandoah
88 * @library /test/lib
89 *
90 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
91 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
92 * -XX:+ShenandoahVerify
93 * TestAllocHumongousFragment
94 *
95 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
96 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
97 * TestAllocHumongousFragment
98 */
99
100 /*
101 * @test id=generational
102 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
103 * @key randomness
104 * @requires vm.gc.Shenandoah
105 * @library /test/lib
106 *
107 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
108 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
109 * -XX:+ShenandoahVerify
110 * TestAllocHumongousFragment
111 *
112 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
113 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive -XX:ShenandoahGCMode=generational
114 * TestAllocHumongousFragment
115 */
116
117 /*
118 * @test id=static
119 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
120 * @key randomness
121 * @requires vm.gc.Shenandoah
122 * @library /test/lib
123 *
124 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
125 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
126 * TestAllocHumongousFragment
127 */
128
129 /*
130 * @test id=compact
131 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
132 * @key randomness
133 * @requires vm.gc.Shenandoah
134 * @library /test/lib
135 *
136 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
137 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
138 * TestAllocHumongousFragment
139 */
140
141 /*
142 * @test id=g1
143 * @summary Make sure G1 can recover from humongous allocation fragmentation
144 * @key randomness
145 * @requires vm.gc.G1
146 * @library /test/lib
147 *
148 * @run main/othervm -Xlog:gc+region=trace -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
149 * -XX:VerifyGCType=full -XX:+VerifyDuringGC -XX:+VerifyAfterGC
150 * TestAllocHumongousFragment
151 */
152
153 import java.util.*;
154 import jdk.test.lib.Utils;
155
156 public class TestAllocHumongousFragment {
157
158 static final long TARGET_MB = Long.getLong("target", 30_000); // 30 Gb allocations
159 static final long LIVE_MB = Long.getLong("occupancy", 700); // 700 Mb alive
160
161 static volatile Object sink;
162
163 static List<int[]> objects;
164
165 public static void main(String[] args) throws Exception {
166 final int min = 128 * 1024;
167 final int max = 16 * 1024 * 1024;
168 final long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2));
169
170 objects = new ArrayList<>();
171 long current = 0;
172
173 Random rng = Utils.getRandomInstance();
174 for (long c = 0; c < count; c++) {
175 while (current > LIVE_MB * 1024 * 1024) {
176 int idx = rng.nextInt(objects.size());
177 int[] remove = objects.remove(idx);
178 current -= remove.length * 4 + 16;
179 }
180
181 int[] newObj = new int[min + rng.nextInt(max - min)];
182 current += newObj.length * 4 + 16;
183 objects.add(newObj);
184 sink = new Object();
185
186 System.out.println("Allocated: " + (current / 1024 / 1024) + " Mb");
187 }
188 }
189
190 }