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 * 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=passive
28 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
29 * @key randomness
30 * @requires vm.gc.Shenandoah
31 * @library /test/lib
32 *
33 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
34 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
35 * -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
36 * TestAllocHumongousFragment
37 *
38 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
39 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
40 * -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify
41 * TestAllocHumongousFragment
42 *
43 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
44 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
45 * -XX:-ShenandoahDegeneratedGC
46 * TestAllocHumongousFragment
47 *
48 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
49 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
50 * -XX:+ShenandoahDegeneratedGC
51 * TestAllocHumongousFragment
52 */
53
54 /*
55 * @test id=aggressive
56 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
57 * @key randomness
58 * @requires vm.gc.Shenandoah
59 * @library /test/lib
60 *
61 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
62 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
63 * -XX:+ShenandoahOOMDuringEvacALot -XX:+ShenandoahVerify
64 * TestAllocHumongousFragment
65 *
66 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
67 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
68 * -XX:+ShenandoahAllocFailureALot -XX:+ShenandoahVerify
69 * TestAllocHumongousFragment
70 *
71 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
72 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
73 * -XX:+ShenandoahOOMDuringEvacALot
74 * TestAllocHumongousFragment
75 *
76 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
77 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
78 * -XX:+ShenandoahAllocFailureALot
79 * TestAllocHumongousFragment
80 */
81
82 /*
83 * @test id=adaptive
84 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
85 * @key randomness
86 * @requires vm.gc.Shenandoah
87 * @library /test/lib
88 *
89 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
90 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
91 * -XX:+ShenandoahVerify
92 * TestAllocHumongousFragment
93 *
94 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
95 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
96 * TestAllocHumongousFragment
97 */
98
99 /*
100 * @test id=static
101 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
102 * @key randomness
103 * @requires vm.gc.Shenandoah
104 * @library /test/lib
105 *
106 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
107 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
108 * TestAllocHumongousFragment
109 */
110
111 /*
112 * @test id=compact
113 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
114 * @key randomness
115 * @requires vm.gc.Shenandoah
116 * @library /test/lib
117 *
118 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
119 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
120 * TestAllocHumongousFragment
121 */
122
123 /*
124 * @test id=iu-aggressive
125 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
126 * @key randomness
127 * @requires vm.gc.Shenandoah
128 * @library /test/lib
129 *
130 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
131 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
132 * -XX:+ShenandoahOOMDuringEvacALot -XX:+ShenandoahVerify
133 * TestAllocHumongousFragment
134 *
135 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
136 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
137 * -XX:+ShenandoahAllocFailureALot -XX:+ShenandoahVerify
138 * TestAllocHumongousFragment
139 *
140 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
141 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
142 * -XX:+ShenandoahOOMDuringEvacALot
143 * TestAllocHumongousFragment
144 *
145 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
146 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
147 * -XX:+ShenandoahAllocFailureALot
148 * TestAllocHumongousFragment
149 */
150
151 /*
152 * @test id=iu
153 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
154 * @key randomness
155 * @requires vm.gc.Shenandoah
156 * @library /test/lib
157 *
158 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
159 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
160 * -XX:+ShenandoahVerify
161 * TestAllocHumongousFragment
162 *
163 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
164 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
165 * TestAllocHumongousFragment
166 */
167
168 /*
169 * @test id=g1
170 * @summary Make sure G1 can recover from humongous allocation fragmentation
171 * @key randomness
172 * @requires vm.gc.G1
173 * @library /test/lib
174 *
175 * @run main/othervm -Xlog:gc+region=trace -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
176 * -XX:VerifyGCType=full -XX:+VerifyDuringGC -XX:+VerifyAfterGC
177 * TestAllocHumongousFragment
178 */
179
180 /*
181 * @test id=g1-alt-forwarding
182 * @summary Make sure G1 can recover from humongous allocation fragmentation, with alt GC forwarding
183 * @key randomness
184 * @requires vm.gc.G1
185 * @library /test/lib
186 *
187 * @run main/othervm -Xlog:gc+region=trace -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g
188 * -XX:VerifyGCType=full -XX:+VerifyDuringGC -XX:+VerifyAfterGC -XX:+UseAltGCForwarding
189 * TestAllocHumongousFragment
190 */
191
192 import java.util.*;
193 import jdk.test.lib.Utils;
194
195 public class TestAllocHumongousFragment {
196
197 static final long TARGET_MB = Long.getLong("target", 30_000); // 30 Gb allocations
198 static final long LIVE_MB = Long.getLong("occupancy", 700); // 700 Mb alive
199
200 static volatile Object sink;
201
202 static List<int[]> objects;
203
204 public static void main(String[] args) throws Exception {
205 final int min = 128 * 1024;
206 final int max = 16 * 1024 * 1024;
207 final long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2));
208
209 objects = new ArrayList<>();
210 long current = 0;
211
212 Random rng = Utils.getRandomInstance();
213 for (long c = 0; c < count; c++) {
214 while (current > LIVE_MB * 1024 * 1024) {
215 int idx = rng.nextInt(objects.size());
216 int[] remove = objects.remove(idx);
217 current -= remove.length * 4 + 16;
218 }
219
220 int[] newObj = new int[min + rng.nextInt(max - min)];
221 current += newObj.length * 4 + 16;
222 objects.add(newObj);
223 sink = new Object();
224
225 System.out.println("Allocated: " + (current / 1024 / 1024) + " Mb");
226 }
227 }
228
229 }