1 /*
2 * Copyright (c) 2016, 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 *
23 */
24
25 /*
26 * @test TestAllocHumongousFragment
27 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
28 * @key randomness
29 * @requires vm.gc.Shenandoah
30 * @library /test/lib
31 *
32 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
33 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
34 * -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
35 * TestAllocHumongousFragment
36 *
37 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
38 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
39 * -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify
40 * TestAllocHumongousFragment
41 *
42 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
43 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
44 * -XX:-ShenandoahDegeneratedGC
45 * TestAllocHumongousFragment
46 *
47 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
48 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
49 * -XX:+ShenandoahDegeneratedGC
50 * TestAllocHumongousFragment
51 */
52
53 /*
54 * @test TestAllocHumongousFragment
55 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
56 * @key randomness
57 * @requires vm.gc.Shenandoah
58 * @library /test/lib
59 *
60 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
61 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
62 * -XX:+ShenandoahOOMDuringEvacALot -XX:+ShenandoahVerify
63 * TestAllocHumongousFragment
64 *
65 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
66 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
67 * -XX:+ShenandoahAllocFailureALot -XX:+ShenandoahVerify
68 * TestAllocHumongousFragment
69 *
70 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
71 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
72 * -XX:+ShenandoahOOMDuringEvacALot
73 * TestAllocHumongousFragment
74 *
75 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
76 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
77 * -XX:+ShenandoahAllocFailureALot
78 * TestAllocHumongousFragment
79 *
80 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
81 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
82 * -XX:+ShenandoahVerify
83 * TestAllocHumongousFragment
84 *
85 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
86 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
87 * TestAllocHumongousFragment
88 *
89 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
90 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
91 * TestAllocHumongousFragment
92 *
93 * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048
94 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
95 * TestAllocHumongousFragment
96 */
97
98 /*
99 * @test TestAllocHumongousFragment
100 * @summary Make sure Shenandoah can recover from humongous allocation fragmentation
101 * @key randomness
102 * @requires vm.gc.Shenandoah
103 * @library /test/lib
104 *
105 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
106 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
107 * -XX:+ShenandoahOOMDuringEvacALot -XX:+ShenandoahVerify
108 * TestAllocHumongousFragment
109 *
110 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
111 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
112 * -XX:+ShenandoahAllocFailureALot -XX:+ShenandoahVerify
113 * TestAllocHumongousFragment
114 *
115 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
116 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
117 * -XX:+ShenandoahOOMDuringEvacALot
118 * TestAllocHumongousFragment
119 *
120 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
121 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
122 * -XX:+ShenandoahAllocFailureALot
123 * TestAllocHumongousFragment
124 *
125 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
126 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
127 * -XX:+ShenandoahVerify
128 * TestAllocHumongousFragment
129 *
130 * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048
131 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
132 * TestAllocHumongousFragment
133 */
134
135 import java.util.*;
136 import jdk.test.lib.Utils;
137
138 public class TestAllocHumongousFragment {
139
140 static final long TARGET_MB = Long.getLong("target", 30_000); // 30 Gb allocations
141 static final long LIVE_MB = Long.getLong("occupancy", 700); // 700 Mb alive
142
143 static volatile Object sink;
144
145 static List<int[]> objects;
146
147 public static void main(String[] args) throws Exception {
148 final int min = 128 * 1024;
149 final int max = 16 * 1024 * 1024;
150 final long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2));
151
152 objects = new ArrayList<>();
153 long current = 0;
154
155 Random rng = Utils.getRandomInstance();
156 for (long c = 0; c < count; c++) {
157 while (current > LIVE_MB * 1024 * 1024) {
158 int idx = rng.nextInt(objects.size());
159 int[] remove = objects.remove(idx);
160 current -= remove.length * 4 + 16;
161 }
162
163 int[] newObj = new int[min + rng.nextInt(max - min)];
164 current += newObj.length * 4 + 16;
165 objects.add(newObj);
166 sink = new Object();
167
168 System.out.println("Allocated: " + (current / 1024 / 1024) + " Mb");
169 }
170 }
171
172 }