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