| /* |
| * Copyright (c) 2016, 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 TestAllocHumongousFragment |
| * @summary Make sure Shenandoah can recover from humongous allocation fragmentation |
| * @key gc |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled |
| * |
| * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive |
| * -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify |
| * TestAllocHumongousFragment |
| * |
| * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive |
| * -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify |
| * TestAllocHumongousFragment |
| * |
| * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive |
| * -XX:-ShenandoahDegeneratedGC |
| * TestAllocHumongousFragment |
| * |
| * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive |
| * -XX:+ShenandoahDegeneratedGC |
| * TestAllocHumongousFragment |
| */ |
| |
| /* |
| * @test TestAllocHumongousFragment |
| * @summary Make sure Shenandoah can recover from humongous allocation fragmentation |
| * @key gc |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled |
| * |
| * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive |
| * -XX:+ShenandoahOOMDuringEvacALot -XX:+ShenandoahVerify |
| * TestAllocHumongousFragment |
| * |
| * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive |
| * -XX:+ShenandoahAllocFailureALot -XX:+ShenandoahVerify |
| * TestAllocHumongousFragment |
| * |
| * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive |
| * -XX:+ShenandoahOOMDuringEvacALot |
| * TestAllocHumongousFragment |
| * |
| * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive |
| * -XX:+ShenandoahAllocFailureALot |
| * TestAllocHumongousFragment |
| */ |
| |
| /* |
| * @test TestAllocHumongousFragment |
| * @summary Make sure Shenandoah can recover from humongous allocation fragmentation |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled |
| * @library /test/lib |
| * |
| * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive |
| * -XX:+ShenandoahVerify |
| * TestAllocHumongousFragment |
| * |
| * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive |
| * TestAllocHumongousFragment |
| */ |
| |
| /* |
| * @test TestAllocHumongousFragment |
| * @summary Make sure Shenandoah can recover from humongous allocation fragmentation |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled |
| * @library /test/lib |
| * |
| * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static |
| * TestAllocHumongousFragment |
| */ |
| |
| /* |
| * @test TestAllocHumongousFragment |
| * @summary Make sure Shenandoah can recover from humongous allocation fragmentation |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled |
| * @library /test/lib |
| * |
| * @run main/othervm -Xmx1g -Xms1g -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact |
| * TestAllocHumongousFragment |
| */ |
| |
| /* |
| * @test TestAllocHumongousFragment |
| * @summary Make sure Shenandoah can recover from humongous allocation fragmentation |
| * @key gc |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled |
| * |
| * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive |
| * -XX:+ShenandoahOOMDuringEvacALot -XX:+ShenandoahVerify |
| * TestAllocHumongousFragment |
| * |
| * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive |
| * -XX:+ShenandoahAllocFailureALot -XX:+ShenandoahVerify |
| * TestAllocHumongousFragment |
| * |
| * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive |
| * -XX:+ShenandoahOOMDuringEvacALot |
| * TestAllocHumongousFragment |
| * |
| * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive |
| * -XX:+ShenandoahAllocFailureALot |
| * TestAllocHumongousFragment |
| */ |
| |
| /* |
| * @test TestAllocHumongousFragment |
| * @summary Make sure Shenandoah can recover from humongous allocation fragmentation |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled |
| * @library /test/lib |
| * |
| * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu |
| * -XX:+ShenandoahVerify |
| * TestAllocHumongousFragment |
| * |
| * @run main/othervm -Xlog:gc -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -Xmx1g -Xms1g -XX:ShenandoahTargetNumRegions=2048 |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu |
| * TestAllocHumongousFragment |
| */ |
| |
| import java.util.*; |
| import java.util.concurrent.*; |
| |
| public class TestAllocHumongousFragment { |
| |
| static final long TARGET_MB = Long.getLong("target", 30_000); // 30 Gb allocations |
| static final long LIVE_MB = Long.getLong("occupancy", 700); // 700 Mb alive |
| |
| static volatile Object sink; |
| |
| static List<int[]> objects; |
| |
| public static void main(String[] args) throws Exception { |
| final int min = 128 * 1024; |
| final int max = 16 * 1024 * 1024; |
| final long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2)); |
| |
| objects = new ArrayList<>(); |
| long current = 0; |
| |
| Random r = new Random(); |
| for (long c = 0; c < count; c++) { |
| while (current > LIVE_MB * 1024 * 1024) { |
| int idx = ThreadLocalRandom.current().nextInt(objects.size()); |
| int[] remove = objects.remove(idx); |
| current -= remove.length * 4 + 16; |
| } |
| |
| int[] newObj = new int[min + r.nextInt(max - min)]; |
| current += newObj.length * 4 + 16; |
| objects.add(newObj); |
| sink = new Object(); |
| |
| System.out.println("Allocated: " + (current / 1024 / 1024) + " Mb"); |
| } |
| } |
| |
| } |