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 TestHumongousThreshold
26 * @key gc
27 * @requires vm.gc.Shenandoah & !vm.graal.enabled
28 *
29 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
30 * -XX:+ShenandoahVerify
31 * TestHumongousThreshold
32 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
33 * -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=50
34 * TestHumongousThreshold
35 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
36 * -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=90
37 * TestHumongousThreshold
38 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
39 * -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=99
40 * TestHumongousThreshold
41 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
42 * -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=100
43 * TestHumongousThreshold
44 *
45 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
46 * -XX:-UseTLAB -XX:+ShenandoahVerify
47 * TestHumongousThreshold
48 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
49 * -XX:-UseTLAB -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=50
50 * TestHumongousThreshold
51 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
52 * -XX:-UseTLAB -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=90
53 * TestHumongousThreshold
54 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
55 * -XX:-UseTLAB -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=99
56 * TestHumongousThreshold
57 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
58 * -XX:-UseTLAB -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=100
59 * TestHumongousThreshold
60 *
61 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
62 * -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify
63 * TestHumongousThreshold
64 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
65 * -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=50
66 * TestHumongousThreshold
67 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
68 * -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=90
69 * TestHumongousThreshold
70 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
71 * -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=99
72 * TestHumongousThreshold
73 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
74 * -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=100
75 * TestHumongousThreshold
76 *
77 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
78 * -XX:-UseTLAB -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify
79 * TestHumongousThreshold
80 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
81 * -XX:-UseTLAB -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=50
82 * TestHumongousThreshold
83 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
84 * -XX:-UseTLAB -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=90
85 * TestHumongousThreshold
86 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
87 * -XX:-UseTLAB -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=99
88 * TestHumongousThreshold
89 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
90 * -XX:-UseTLAB -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=100
91 * TestHumongousThreshold
92 *
93 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
94 * -XX:ShenandoahHumongousThreshold=90 -XX:ShenandoahGCHeuristics=aggressive
95 * TestHumongousThreshold
96 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g
97 * -XX:-UseTLAB -XX:ShenandoahHumongousThreshold=90 -XX:ShenandoahGCHeuristics=aggressive
98 * TestHumongousThreshold
99 */
100
101 import java.util.Random;
102
103 public class TestHumongousThreshold {
104
105 static final long TARGET_MB = Long.getLong("target", 20_000); // 20 Gb allocation
106
107 static volatile Object sink;
108
109 public static void main(String[] args) throws Exception {
110 final int min = 0;
111 final int max = 384 * 1024;
112 long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2));
113
114 Random r = new Random();
115 for (long c = 0; c < count; c++) {
116 sink = new int[min + r.nextInt(max - min)];
117 }
118 }
119
120 }