89 lines
2.9 KiB
Java
89 lines
2.9 KiB
Java
/*
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* Copyright (c) 2021, Huawei Technologies Co., Ltd. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package gc.g1;
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/*
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* @test TestG1SkipCompaction
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* @summary Test for JDK-8262068 Improve G1 Full GC by skipping compaction
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* for regions with high survival ratio.
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* @requires vm.gc.G1
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* java.management
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* @run main/othervm -Xms256m -Xmx256m gc.g1.TestG1SkipCompaction
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*/
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import java.util.ArrayList;
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import java.util.List;
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import jdk.test.lib.Platform;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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public class TestG1SkipCompaction {
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public static void runTest() throws Exception {
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final String[] arguments = {
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"-XX:+UseG1GC",
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"-XX:MarkSweepDeadRatio=3",
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"-Xmx8m",
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"-Xms8M",
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"-Xlog:gc+phases=trace",
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"-XX:G1HeapRegionSize=1m",
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GCTest.class.getName()
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};
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OutputAnalyzer output = ProcessTools.executeLimitedTestJava(arguments);
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System.out.println(output.getStdout());
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String pattern = ".*skip compaction region.*";
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Pattern r = Pattern.compile(pattern);
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Matcher m = r.matcher(output.getStdout());
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if (!m.find()) {
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throw new RuntimeException("Could not find any not compacted regions in the logs");
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}
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}
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public static void main(String[] args) throws Exception {
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runTest();
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}
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static class GCTest {
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public static List<char[]> memory;
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public static void main(String[] args) throws Exception {
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memory = new ArrayList<>();
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try {
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while (true) {
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memory.add(new char[8 * 1024]);
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System.gc();
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}
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} catch (OutOfMemoryError e) {
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memory = null;
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System.gc();
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}
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}
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}
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}
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