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