1 /*
2 * Copyright (c) 2017, 2020, Red Hat, Inc. All rights reserved.
3 * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 /**
27 * @test id=passive
28 * @summary Test Shenandoah GC uses concurrent/parallel threads correctly
29 * @requires vm.gc.Shenandoah
30 *
31 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
32 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
33 * -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
34 * -Dtarget=1000
35 * TestGCThreadGroups
36 */
37
38 /**
39 * @test id=default
40 * @summary Test Shenandoah GC uses concurrent/parallel threads correctly
41 * @requires vm.gc.Shenandoah
42 *
43 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
44 * -XX:+UseShenandoahGC
45 * -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
46 * -Dtarget=1000
47 * TestGCThreadGroups
48 *
49 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
50 * -XX:+UseShenandoahGC
51 * -XX:-UseDynamicNumberOfGCThreads
52 * -Dtarget=1000
53 * TestGCThreadGroups
54 *
55 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
56 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
57 * -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
58 * -Dtarget=1000
59 * TestGCThreadGroups
60 *
61 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
62 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
63 * -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
64 * -Dtarget=1000
65 * TestGCThreadGroups
66 *
67 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
68 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
69 * -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
70 * -Dtarget=100
71 * TestGCThreadGroups
72 *
73 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
74 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
75 * -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
76 * -Dtarget=100
77 * TestGCThreadGroups
78 */
79
80 /**
81 * @test id=generational
82 * @summary Test Shenandoah GC uses concurrent/parallel threads correctly
83 * @requires vm.gc.Shenandoah
84 *
85 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
86 * -XX:+UseShenandoahGC
87 * -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4
88 * -Dtarget=1000 -XX:ShenandoahGCMode=generational
89 * TestGCThreadGroups
90 *
91 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
92 * -XX:+UseShenandoahGC
93 * -XX:-UseDynamicNumberOfGCThreads
94 * -Dtarget=1000 -XX:ShenandoahGCMode=generational
95 * TestGCThreadGroups
96 */
97
98 public class TestGCThreadGroups {
99
100 static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation, around 1K cycles to handle
101 static final long STRIDE = 100_000;
102
103 static volatile Object sink;
104
105 public static void main(String[] args) throws Exception {
106 long count = TARGET_MB * 1024 * 1024 / 16;
107 for (long c = 0; c < count; c += STRIDE) {
108 for (long s = 0; s < STRIDE; s++) {
109 sink = new Object();
110 }
111 Thread.sleep(1);
112 }
113 }
114
115 }