1 /*
2 * Copyright (c) 2017, 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 TestHeapUncommit
26 * @summary Acceptance tests: collector can withstand allocation
27 * @key gc
28 * @requires vm.gc.Shenandoah & !vm.graal.enabled
29 *
30 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
31 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
32 * -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify
33 * TestHeapUncommit
34 *
35 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
36 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
37 * -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
38 * TestHeapUncommit
39 *
40 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
41 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
42 * -XX:+ShenandoahDegeneratedGC
43 * TestHeapUncommit
44 *
45 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
46 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
47 * -XX:-ShenandoahDegeneratedGC
48 * TestHeapUncommit
49 */
50
51 /*
52 * @test TestHeapUncommit
53 * @summary Acceptance tests: collector can withstand allocation
54 * @key gc
55 * @requires vm.gc.Shenandoah & !vm.graal.enabled
56 *
57 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
58 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
59 * -XX:+ShenandoahVerify
60 * TestHeapUncommit
61 *
62 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
63 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
64 * TestHeapUncommit
65 *
66 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
67 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
68 * TestHeapUncommit
69 *
70 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
71 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
72 * TestHeapUncommit
73 *
74 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
75 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
76 * TestHeapUncommit
77 *
78 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
79 * -XX:+UseShenandoahGC
80 * -XX:-UseTLAB -XX:+ShenandoahVerify
81 * TestHeapUncommit
82 */
83
84 /*
85 * @test TestHeapUncommit
86 * @summary Acceptance tests: collector can withstand allocation
87 * @key gc
88 * @requires vm.gc.Shenandoah & !vm.graal.enabled
89 *
90 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
91 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=traversal
92 * -XX:+ShenandoahVerify
93 * TestHeapUncommit
94 *
95 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
96 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=traversal
97 * TestHeapUncommit
98 *
99 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
100 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=traversal -XX:ShenandoahGCHeuristics=aggressive
101 * TestHeapUncommit
102 */
103
104 /*
105 * @test TestHeapUncommit
106 * @key gc
107 * @requires vm.gc.Shenandoah & !vm.graal.enabled & (vm.bits == "64")
108 *
109 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0 -XX:+UseLargePages
110 * -XX:+UseShenandoahGC
111 * -XX:+ShenandoahVerify
112 * TestHeapUncommit
113 *
114 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0 -XX:+UseLargePages
115 * -XX:+UseShenandoahGC
116 * TestHeapUncommit
117 *
118 * @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0 -XX:+UseLargePages
119 * -XX:+UseShenandoahGC
120 * -XX:-UseTLAB -XX:+ShenandoahVerify
121 * TestHeapUncommit
122 */
123
124 import java.util.Random;
125
126 public class TestHeapUncommit {
127
128 static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation
129
130 static volatile Object sink;
131
132 public static void main(String[] args) throws Exception {
133 final int min = 0;
134 final int max = 384 * 1024;
135 long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2));
136
137 Random r = new Random();
138 for (long c = 0; c < count; c++) {
139 sink = new int[min + r.nextInt(max - min)];
140 }
141 }
142
143 }