| /* |
| * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| /* |
| * @test TestHumongousThreshold |
| * @key gc |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled |
| * |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:+ShenandoahVerify |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=50 |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=90 |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=99 |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=100 |
| * TestHumongousThreshold |
| * |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:-UseTLAB -XX:+ShenandoahVerify |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:-UseTLAB -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=50 |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:-UseTLAB -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=90 |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:-UseTLAB -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=99 |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:-UseTLAB -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=100 |
| * TestHumongousThreshold |
| * |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:ShenandoahHumongousThreshold=90 -XX:ShenandoahGCHeuristics=aggressive |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:-UseTLAB -XX:ShenandoahHumongousThreshold=90 -XX:ShenandoahGCHeuristics=aggressive |
| * TestHumongousThreshold |
| */ |
| |
| /* |
| * @test TestHumongousThreshold |
| * @key gc |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled & (vm.bits == "64") |
| * |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=50 |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=90 |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=99 |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=100 |
| * TestHumongousThreshold |
| * |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:-UseTLAB -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:-UseTLAB -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=50 |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:-UseTLAB -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=90 |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:-UseTLAB -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=99 |
| * TestHumongousThreshold |
| * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g |
| * -XX:-UseTLAB -XX:ObjectAlignmentInBytes=16 -XX:+ShenandoahVerify -XX:ShenandoahHumongousThreshold=100 |
| * TestHumongousThreshold |
| */ |
| |
| import java.util.Random; |
| |
| public class TestHumongousThreshold { |
| |
| static final long TARGET_MB = Long.getLong("target", 20_000); // 20 Gb allocation |
| |
| static volatile Object sink; |
| |
| public static void main(String[] args) throws Exception { |
| final int min = 0; |
| final int max = 384 * 1024; |
| long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2)); |
| |
| Random r = new Random(); |
| for (long c = 0; c < count; c++) { |
| sink = new int[min + r.nextInt(max - min)]; |
| } |
| } |
| |
| } |