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