139 lines
4.9 KiB
Java
139 lines
4.9 KiB
Java
/*
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* Copyright (c) 2020, 2023 SAP SE. All rights reserved.
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* Copyright (c) 2020, 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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*/
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/*
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* This is a stress test for allocating from a single MetaspaceArena from
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* multiple threads, optionally with reserve limit (mimicking the non-expandable CompressedClassSpace)
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* or commit limit (mimicking MaxMetaspaceSize).
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*
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* The test threads will start to allocate from the Arena, and occasionally deallocate.
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* The threads run with a safety allocation max; if reached (or, if the underlying arena
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* hits either commit or reserve limit, if given) they will switch to deallocation and then
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* kind of float at the allocation ceiling, alternating between allocation and deallocation.
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*
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* We test with various flags, to exercise all 3 reclaim policies (none, balanced (default)
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* and aggressive) as well as one run with allocation guards enabled.
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*
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* We also set MetaspaceVerifyInterval very low to trigger many verifications in debug vm.
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*
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*/
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/*
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* @test id=debug-default
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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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* @build jdk.test.whitebox.WhiteBox
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* @key randomness
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* @requires (vm.debug == true)
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*
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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*
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* @run main/othervm/timeout=400
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* -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
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* -XX:VerifyMetaspaceInterval=10
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* TestMetaspaceAllocationMT2 3
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*/
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/*
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* @test id=debug-default-long-manual
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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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* @build jdk.test.whitebox.WhiteBox
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* @key randomness
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* @requires (vm.debug == true)
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*
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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*
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* @run main/othervm/manual
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* -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
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* -XX:VerifyMetaspaceInterval=10
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* TestMetaspaceAllocationMT2 10
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*/
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/*
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* @test id=ndebug-default
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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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* @build jdk.test.whitebox.WhiteBox
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* @key randomness
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* @requires (vm.debug == false)
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*
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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*
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* @run main/othervm/timeout=400
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* -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
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* TestMetaspaceAllocationMT2 3
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*/
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import jdk.test.lib.Unit;
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public class TestMetaspaceAllocationMT2 {
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public static void main(String[] args) throws Exception {
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final long testAllocationCeiling = 48L * Unit.M.size();
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final int numThreads = 4;
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final int seconds = Integer.parseInt(args[0]);
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for (int i = 0; i < 3; i ++) {
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long commitLimit = (i == 1) ? 2L * Unit.M.size() : 0;
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// Note: reserve limit must be a multiple of Metaspace::reserve_alignment_words()
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long reserveLimit = (i == 2) ? Settings.ROOT_CHUNK_WORD_SIZE * 16: 0;
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System.out.println("#### Test: ");
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System.out.println("#### testAllocationCeiling: " + testAllocationCeiling);
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System.out.println("#### numThreads: " + numThreads);
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System.out.println("#### seconds: " + seconds);
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System.out.println("#### commitLimit: " + commitLimit);
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System.out.println("#### reserveLimit: " + reserveLimit);
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MetaspaceTestContext context = new MetaspaceTestContext(commitLimit, reserveLimit);
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MetaspaceTestManyArenasManyThreads test = new MetaspaceTestManyArenasManyThreads(context, testAllocationCeiling, numThreads, seconds);
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try {
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test.runTest();
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} catch (RuntimeException e) {
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System.out.println(e);
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context.printToTTY();
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throw e;
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}
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context.destroy();
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System.out.println("#### Done. ####");
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System.out.println("###############");
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}
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}
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}
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