1 /* 2 * Copyright (c) 2017, 2020, Red Hat, Inc. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 /** 26 * @test TestGCThreadGroups 27 * @summary Test Shenandoah GC uses concurrent/parallel threads correctly 28 * @key gc 29 * @requires vm.gc.Shenandoah & !vm.graal.enabled 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 TestGCThreadGroups 40 * @summary Test Shenandoah GC uses concurrent/parallel threads correctly 41 * @key gc 42 * @requires vm.gc.Shenandoah & !vm.graal.enabled 43 * 44 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions 45 * -XX:+UseShenandoahGC 46 * -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4 47 * -Dtarget=1000 48 * TestGCThreadGroups 49 * 50 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions 51 * -XX:+UseShenandoahGC 52 * -XX:-UseDynamicNumberOfGCThreads 53 * -Dtarget=1000 54 * TestGCThreadGroups 55 * 56 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions 57 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive 58 * -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4 59 * -Dtarget=1000 60 * TestGCThreadGroups 61 * 62 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions 63 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static 64 * -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4 65 * -Dtarget=1000 66 * TestGCThreadGroups 67 * 68 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions 69 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact 70 * -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4 71 * -Dtarget=100 72 * TestGCThreadGroups 73 * 74 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions 75 * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive 76 * -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4 77 * -Dtarget=100 78 * TestGCThreadGroups 79 */ 80 81 /** 82 * @test TestGCThreadGroups 83 * @summary Test Shenandoah GC uses concurrent/parallel threads correctly 84 * @key gc 85 * @requires vm.gc.Shenandoah & !vm.graal.enabled 86 * 87 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions 88 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu 89 * -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4 90 * -Dtarget=1000 91 * TestGCThreadGroups 92 * 93 * @run main/othervm -Xmx16m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions 94 * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive 95 * -XX:ConcGCThreads=2 -XX:ParallelGCThreads=4 96 * -Dtarget=1000 97 * TestGCThreadGroups 98 */ 99 100 public class TestGCThreadGroups { 101 102 static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation, around 1K cycles to handle 103 static final long STRIDE = 100_000; 104 105 static volatile Object sink; 106 107 public static void main(String[] args) throws Exception { 108 long count = TARGET_MB * 1024 * 1024 / 16; 109 for (long c = 0; c < count; c += STRIDE) { 110 for (long s = 0; s < STRIDE; s++) { 111 sink = new Object(); 112 } 113 Thread.sleep(1); 114 } 115 } 116 117 }