1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test TestSmallInitialHeapWithLargePageAndNUMA 26 * @bug 8023905 27 * @requires os.family == "linux" 28 * @requires vm.gc.Parallel 29 * @summary Check large pages and NUMA are working together via the output message. 30 * @library /testlibrary /test/lib /test/lib/share/classes 31 * @modules java.base/jdk.internal.misc 32 * @modules java.management/sun.management 33 * @build TestSmallInitialHeapWithLargePageAndNUMA 34 * @run main ClassFileInstaller sun.hotspot.WhiteBox 35 * @run main/othervm -Xbootclasspath/a:. -XX:+UseHugeTLBFS -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI TestSmallInitialHeapWithLargePageAndNUMA 36 */ 37 38 import jdk.test.lib.ProcessTools; 39 import jdk.test.lib.OutputAnalyzer; 40 import sun.hotspot.WhiteBox; 41 42 public class TestSmallInitialHeapWithLargePageAndNUMA { 43 44 private static final String MSG_EXIT_TOO_SMALL_HEAP = "Failed initializing NUMA. Too small initial heap size"; 45 private static final String MSG_GC_TRIGGERED_BEFORE_INIT = "GC triggered before VM initialization completed."; 46 47 public static void main(String[] args) throws Exception { 48 49 WhiteBox wb = WhiteBox.getWhiteBox(); 50 long heapAlignment = wb.getHeapAlignment(); 51 52 // NUMA with large pages is not fully compatible in Linux, so we are using pin region. 53 // And the pin region case, we will skip freeing memory if the page size is larger than the default page size. 54 // If we allocate pages less than NUMA node, NUMA will try to use default page size. 55 // And this will conflict for pin region. 56 // Assume the minimum NUMA node as 2. 57 long initHeap = heapAlignment; 58 long maxHeap = heapAlignment * 2; 59 60 String[] vmArgs = {"-XX:+UseParallelGC", 61 "-Xms" + String.valueOf(initHeap), 62 "-Xmx" + String.valueOf(maxHeap), 63 "-XX:+UseNUMA", 64 "-XX:+UseHugeTLBFS", 65 "-XX:+PrintFlagsFinal", 66 "-version"}; 67 68 ProcessBuilder pb_enabled = ProcessTools.createJavaProcessBuilder(vmArgs); 69 OutputAnalyzer analyzer = new OutputAnalyzer(pb_enabled.start()); 70 71 if (largePageOrNumaEnabled(analyzer)) { 72 // We reach here, if both NUMA and HugeTLB are supported. 73 // However final flags will not be printed as NUMA initialization will be failed. 74 checkAnalyzerValues(analyzer, 1, MSG_EXIT_TOO_SMALL_HEAP); 75 } 76 } 77 78 // If both NUMA and large pages are enabled, VM will exit during NUMA initialization 79 // under the small heap configuration. So final flags will not be printed. 80 private static boolean largePageOrNumaEnabled(OutputAnalyzer analyzer) { 81 String output = analyzer.getOutput(); 82 83 return !output.contains("[Global flags]"); 84 } 85 86 // We need to test with small heap but fastdebug binary fails to initialize because of the small heap. 87 // So skip that case. 88 private static void checkAnalyzerValues(OutputAnalyzer analyzer, int expectedExitValue, String expectedMessage) { 89 String output = analyzer.getOutput(); 90 91 // If the VM exits because of the small heap, skip checking the exit value. 92 if (!output.contains(MSG_GC_TRIGGERED_BEFORE_INIT)) { 93 analyzer.shouldHaveExitValue(expectedExitValue); 94 } 95 if (expectedMessage != null) { 96 analyzer.shouldContain(expectedMessage); 97 } 98 } 99 }