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=iu-aggressive
143 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
144 * @key randomness
145 * @requires vm.gc.Shenandoah
146 * @library /test/lib
147 *
148 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
149 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
150 * -XX:+ShenandoahOOMDuringEvacALot -XX:+ShenandoahVerify
151 * TestAllocHumongousFragment
152 *
153 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
154 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
155 * -XX:+ShenandoahAllocFailureALot -XX:+ShenandoahVerify
156 * TestAllocHumongousFragment
157 *
158 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
159 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
160 * -XX:+ShenandoahOOMDuringEvacALot
161 * TestAllocHumongousFragment
162 *
163 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
164 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
165 * -XX:+ShenandoahAllocFailureALot
166 * TestAllocHumongousFragment
167 */
168
169 /*
170 * @test id=iu
171 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
172 * @key randomness
173 * @requires vm.gc.Shenandoah
174 * @library /test/lib
175 *
176 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
177 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
178 * -XX:+ShenandoahVerify
179 * TestAllocHumongousFragment
180 *
181 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
182 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
183 * TestAllocHumongousFragment
184 */
185
186 /*
187 * @test id=g1
188 * @summary Make sure G1 can recover from humongous allocation fragmentation
189 * @key randomness
190 * @requires vm.gc.G1
191 * @library /test/lib
192 *
193 * @run main/othervm -Xlog:gc+region=trace -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
194 * -XX:VerifyGCType=full -XX:+VerifyDuringGC -XX:+VerifyAfterGC
195 * TestAllocHumongousFragment
196 */
197
198 import java.util.*;
199 import jdk.test.lib.Utils;
200
201 public class TestAllocHumongousFragment {
202
203 static final long TARGET_MB = Long.getLong("target", 30_000); // 30 Gb allocations
204 static final long LIVE_MB = Long.getLong("occupancy", 700); // 700 Mb alive
205
206 static volatile Object sink;
207
208 static List<int[]> objects;
209
210 public static void main(String[] args) throws Exception {
211 final int min = 128 * 1024;
212 final int max = 16 * 1024 * 1024;
213 final long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2));
214
215 objects = new ArrayList<>();
216 long current = 0;
217
218 Random rng = Utils.getRandomInstance();
219 for (long c = 0; c < count; c++) {
220 while (current > LIVE_MB * 1024 * 1024) {
221 int idx = rng.nextInt(objects.size());
222 int[] remove = objects.remove(idx);
223 current -= remove.length * 4 + 16;
224 }
225
226 int[] newObj = new int[min + rng.nextInt(max - min)];
227 current += newObj.length * 4 + 16;
228 objects.add(newObj);
229 sink = new Object();
230
231 System.out.println("Allocated: " + (current / 1024 / 1024) + " Mb");
232 }
233 }
234
235 }