99 lines
3.8 KiB
Java
99 lines
3.8 KiB
Java
/*
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* Copyright (c) 2024, Oracle and/or its affiliates. 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.arguments;
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/*
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* @test TestParallelGCErgo
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* @bug 8272364
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* @requires vm.gc.Parallel
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* @requires vm.opt.UseLargePages == null | !vm.opt.UseLargePages
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* @summary Verify ParallelGC minimum young and old ergonomics are setup correctly
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* @modules java.base/jdk.internal.misc
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* @library /test/lib
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* @library /
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* @run driver gc.arguments.TestParallelGCErgo
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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.Arrays;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.Platform;
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public class TestParallelGCErgo {
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private static final long HEAPWORD_SIZE = Platform.is64bit() ? 8 : 4;
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// Must be a power of 2
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private static final long GEN_ALIGNMENT = 64 * 1024 * HEAPWORD_SIZE;
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private static final long MINIMUM_HEAP_SIZE = 256 * 1024 * 1024; // 256M
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private static final long EXPECTED_MIN_YOUNG = alignDown(MINIMUM_HEAP_SIZE / 3, GEN_ALIGNMENT);
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private static final long EXPECTED_MIN_OLD = MINIMUM_HEAP_SIZE - EXPECTED_MIN_YOUNG; // heap size = young size + old size
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// s has to be a power of 2
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private static long alignDown(long s, long align) {
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return s & (~(align-1));
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}
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public static void main(String[] args) throws Exception {
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ArrayList<String> flagList = new ArrayList<String>();
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flagList.add("-XX:+UseParallelGC");
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flagList.add("-Xms256m");
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flagList.add("-Xmx1g");
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flagList.add("-Xlog:gc+heap=trace");
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flagList.add("-version");
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OutputAnalyzer output = GCArguments.executeTestJava(flagList);
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output.shouldHaveExitValue(0);
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String stdout = output.getStdout();
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long minimumHeap = getFlagValue("Minimum heap", stdout);
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if (minimumHeap != MINIMUM_HEAP_SIZE) {
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throw new RuntimeException("Wrong value for minimum heap. Expected " + MINIMUM_HEAP_SIZE + " but got " + minimumHeap);
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}
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long minimumYoung = getFlagValue("Minimum young", stdout);
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if (minimumYoung != EXPECTED_MIN_YOUNG) {
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throw new RuntimeException("Wrong value for minimum young. Expected " + EXPECTED_MIN_YOUNG + " but got " + minimumYoung);
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}
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long minimumOld = getFlagValue("Minimum old", stdout);
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if (minimumOld != EXPECTED_MIN_OLD) {
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throw new RuntimeException("Wrong value for minimum old. Expected " + EXPECTED_MIN_OLD + " but got " + minimumOld);
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}
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}
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private static long getFlagValue(String flag, String where) {
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Matcher m = Pattern.compile(flag + " \\d+").matcher(where);
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if (!m.find()) {
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throw new RuntimeException("Could not find value for flag " + flag + " in output string");
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}
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String match = m.group();
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return Long.parseLong(match.substring(match.lastIndexOf(" ") + 1, match.length()));
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}
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}
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