# HG changeset patch # User pliden # Date 1381829927 -7200 # Node ID 6f1919cfd18cbaffd3266235b871a1aa9ba29b4c # Parent d6818f623792d3761210dc4e206214d71d9def04 8023158: hotspot/test/gc/7168848/HumongousAlloc.java fails 14 full gcs, expect 0 full gcs Reviewed-by: brutisso, tschatzl diff -r d6818f623792 -r 6f1919cfd18c test/TEST.groups --- a/test/TEST.groups Tue Oct 15 11:18:42 2013 +0200 +++ b/test/TEST.groups Tue Oct 15 11:38:47 2013 +0200 @@ -124,7 +124,7 @@ compiler/whitebox/IsMethodCompilableTest.java \ gc/6581734/Test6581734.java \ gc/7072527/TestFullGCCount.java \ - gc/7168848/HumongousAlloc.java \ + gc/g1/TestHumongousAllocInitialMark.java \ gc/arguments/TestG1HeapRegionSize.java \ gc/metaspace/TestMetaspaceMemoryPool.java \ runtime/InternalApi/ThreadCpuTimesDeadlock.java \ diff -r d6818f623792 -r 6f1919cfd18c test/gc/7168848/HumongousAlloc.java --- a/test/gc/7168848/HumongousAlloc.java Tue Oct 15 11:18:42 2013 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,74 +0,0 @@ -/* - * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * 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 Humongous.java - * @bug 7168848 - * @summary G1: humongous object allocations should initiate marking cycles when necessary - * @run main/othervm -Xms100m -Xmx100m -XX:+PrintGC -XX:G1HeapRegionSize=1m -XX:+UseG1GC HumongousAlloc - * - */ -import java.lang.management.GarbageCollectorMXBean; -import java.lang.management.ManagementFactory; -import java.util.List; - -public class HumongousAlloc { - - public static byte[] dummy; - private static int sleepFreq = 40; - private static int sleepTime = 1000; - private static double size = 0.75; - private static int iterations = 50; - private static int MB = 1024 * 1024; - - public static void allocate(int size, int sleepTime, int sleepFreq) throws InterruptedException { - System.out.println("Will allocate objects of size: " + size - + " bytes and sleep for " + sleepTime - + " ms after every " + sleepFreq + "th allocation."); - int count = 0; - while (count < iterations) { - for (int i = 0; i < sleepFreq; i++) { - dummy = new byte[size - 16]; - } - Thread.sleep(sleepTime); - count++; - } - } - - public static void main(String[] args) throws InterruptedException { - allocate((int) (size * MB), sleepTime, sleepFreq); - List collectors = ManagementFactory.getGarbageCollectorMXBeans(); - for (GarbageCollectorMXBean collector : collectors) { - if (collector.getName().contains("G1 Old")) { - long count = collector.getCollectionCount(); - if (count > 0) { - throw new RuntimeException("Failed: FullGCs should not have happened. The number of FullGC run is " + count); - } - else { - System.out.println("Passed."); - } - } - } - } -} - diff -r d6818f623792 -r 6f1919cfd18c test/gc/g1/TestHumongousAllocInitialMark.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/gc/g1/TestHumongousAllocInitialMark.java Tue Oct 15 11:38:47 2013 +0200 @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * 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 TestHumongousAllocInitialMark + * @bug 7168848 + * @summary G1: humongous object allocations should initiate marking cycles when necessary + * @library /testlibrary + */ + +import com.oracle.java.testlibrary.*; + +public class TestHumongousAllocInitialMark { + private static final int heapSize = 200; // MB + private static final int heapRegionSize = 1; // MB + private static final int initiatingHeapOccupancyPercent = 50; // % + + public static void main(String[] args) throws Exception { + ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( + "-XX:+UseG1GC", + "-Xms" + heapSize + "m", + "-Xmx" + heapSize + "m", + "-XX:G1HeapRegionSize=" + heapRegionSize + "m", + "-XX:InitiatingHeapOccupancyPercent=" + initiatingHeapOccupancyPercent, + "-XX:+PrintGC", + HumongousObjectAllocator.class.getName()); + + OutputAnalyzer output = new OutputAnalyzer(pb.start()); + output.shouldContain("GC pause (G1 Humongous Allocation) (young) (initial-mark)"); + output.shouldNotContain("Full GC"); + output.shouldHaveExitValue(0); + } + + static class HumongousObjectAllocator { + private static byte[] dummy; + + public static void main(String [] args) throws Exception { + // Make object size 75% of region size + final int humongousObjectSize = + (int)(heapRegionSize * 1024 * 1024 * 0.75); + + // Number of objects to allocate to go above IHOP + final int humongousObjectAllocations = + (int)((heapSize * initiatingHeapOccupancyPercent / 100.0) / heapRegionSize) + 1; + + // Allocate + for (int i = 1; i <= humongousObjectAllocations; i++) { + System.out.println("Allocating humongous object " + i + "/" + humongousObjectAllocations + + " of size " + humongousObjectSize + " bytes"); + dummy = new byte[humongousObjectSize]; + } + } + } +} +