192 lines
8.1 KiB
Java
192 lines
8.1 KiB
Java
/*
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* Copyright (c) 2018, 2024, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2018, SAP 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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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.JDKToolFinder;
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/*
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* @test id=test-64bit-ccs
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* @summary Test the VM.metaspace command
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* @requires vm.bits == "64"
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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 -Dwith-compressed-class-space -XX:MaxMetaspaceSize=201M -Xmx100M -XX:+UseCompressedOops -XX:+UseCompressedClassPointers PrintMetaspaceDcmd
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*/
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/*
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* @test id=test-64bit-noccs
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* @summary Test the VM.metaspace command
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* @requires vm.bits == "64"
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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 -Dwithout-compressed-class-space -XX:MaxMetaspaceSize=201M -Xmx100M -XX:-UseCompressedOops -XX:-UseCompressedClassPointers PrintMetaspaceDcmd
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*/
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/*
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* @test id=test-nospecified
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* @summary Test the VM.metaspace command
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* @requires vm.bits == "64"
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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 -Dno-specified-flag -Xmx100M -XX:-UseCompressedOops -XX:-UseCompressedClassPointers PrintMetaspaceDcmd
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*/
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/*
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* @test test-32bit
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* @summary Test the VM.metaspace command
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* @requires vm.bits == "32"
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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 -Dwithout-compressed-class-space -XX:MaxMetaspaceSize=201M -Xmx100M PrintMetaspaceDcmd
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*/
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public class PrintMetaspaceDcmd {
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private static void doTheNoSpecifiedPropTest() throws Exception {
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ProcessBuilder pb = new ProcessBuilder();
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OutputAnalyzer output;
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// Grab my own PID
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String pid = Long.toString(ProcessTools.getProcessId());
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pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "basic"});
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output = new OutputAnalyzer(pb.start());
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output.shouldHaveExitValue(0);
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output.shouldMatch("MaxMetaspaceSize: unlimited");
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}
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private static void doTheCCSPropTest(boolean usesCompressedClassSpace) throws Exception {
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ProcessBuilder pb = new ProcessBuilder();
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OutputAnalyzer output;
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// Grab my own PID
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String pid = Long.toString(ProcessTools.getProcessId());
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pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "basic"});
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output = new OutputAnalyzer(pb.start());
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output.shouldHaveExitValue(0);
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if (usesCompressedClassSpace) {
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output.shouldContain("Non-Class:");
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output.shouldContain("Class:");
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}
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output.shouldContain("Virtual space:");
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output.shouldContain("Chunk freelists:");
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output.shouldMatch("MaxMetaspaceSize:.*201.00.*MB");
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pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace"});
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output = new OutputAnalyzer(pb.start());
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output.shouldHaveExitValue(0);
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if (usesCompressedClassSpace) {
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output.shouldContain("Non-Class:");
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output.shouldContain("Class:");
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}
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output.shouldContain("Virtual space:");
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output.shouldContain("Chunk freelist");
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output.shouldContain("Waste");
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output.shouldMatch("MaxMetaspaceSize:.*201.00.*MB");
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pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "show-loaders"});
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output = new OutputAnalyzer(pb.start());
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output.shouldHaveExitValue(0);
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output.shouldMatch("CLD.*<bootstrap>");
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pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "by-chunktype"});
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output = new OutputAnalyzer(pb.start());
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output.shouldHaveExitValue(0);
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output.shouldContain("1k:");
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output.shouldContain("2k:");
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output.shouldContain("4k:");
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output.shouldContain("8k:");
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output.shouldContain("16k:");
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output.shouldContain("32k:");
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output.shouldContain("64k:");
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output.shouldContain("128k:");
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output.shouldContain("256k:");
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output.shouldContain("512k:");
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output.shouldContain("1m:");
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output.shouldContain("2m:");
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output.shouldContain("4m:");
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pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "vslist"});
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output = new OutputAnalyzer(pb.start());
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output.shouldHaveExitValue(0);
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output.shouldContain("Virtual space list");
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output.shouldMatch("node.*reserved.*committed.*used.*");
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pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "chunkfreelist"});
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// Output should look somewhat like this...
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// vvvvvvvvvvvvvvvv
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// Chunk freelist details:
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// Non-Class:
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// cm non-class-space: 5 chunks, total word size: 402944.
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// -- List[lv00]: empty
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// -- List[lv01]: - <Chunk @0x00007f925c124090, state f, base 0x00007f9208600000, level lv01 (262144 words), used 0 words, committed 0 words.> - total : 1 chunks.
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// -- List[lv02]: - <Chunk @0x00007f925c1240d8, state f, base 0x00007f9208500000, level lv02 (131072 words), used 0 words, committed 0 words.> - total : 1 chunks.
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// -- List[lv03]: empty
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// .....
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//
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// total chunks: 5, total word size: 402944.
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// ^^^^^^^^^^^^^^^^^
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// .... but the actual number of chunks in the freelist is difficult to predict and may be low or zero since
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// no class unloading happened yet.
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output = new OutputAnalyzer(pb.start());
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output.shouldHaveExitValue(0);
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output.shouldContain("Chunk freelist details:");
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// ... but we should see at least one one chunk somewhere, the list should never be empty.
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output.shouldMatch(".*-- List\\[lv00\\].*");
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output.shouldMatch(".*total chunks.*total word size.*");
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// Test with different scales
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pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "scale=G"});
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output = new OutputAnalyzer(pb.start());
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output.shouldHaveExitValue(0);
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output.shouldMatch("MaxMetaspaceSize:.*0.2.*GB");
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pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "scale=K"});
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output = new OutputAnalyzer(pb.start());
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output.shouldHaveExitValue(0);
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output.shouldMatch("MaxMetaspaceSize:.*205824.00 KB");
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pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "scale=1"});
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output = new OutputAnalyzer(pb.start());
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output.shouldHaveExitValue(0);
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output.shouldMatch("MaxMetaspaceSize:.*210763776 bytes");
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}
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public static void main(String args[]) throws Exception {
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if (System.getProperty("no-specified-flag") != null) {
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doTheNoSpecifiedPropTest();
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} else if (System.getProperty("with-compressed-class-space") != null) {
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doTheCCSPropTest(true);
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} else if (System.getProperty("without-compressed-class-space") != null) {
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doTheCCSPropTest(false);
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} else {
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throw new IllegalArgumentException("Unrecognized running mode");
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}
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}
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}
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