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 TestPLABEvacuationFailure 26 * @bug 8148376 27 * @summary Checks PLAB statistics on evacuation failure 28 * @requires vm.gc.G1 29 * @library /test/lib / 30 * @modules java.base/jdk.internal.misc 31 * @modules java.management 32 * @run main gc.g1.plab.TestPLABEvacuationFailure 33 */ 34package gc.g1.plab; 35 36import java.util.Arrays; 37import java.util.List; 38import java.util.Map; 39import java.util.ArrayList; 40import java.util.Collections; 41import java.util.regex.Pattern; 42import java.util.stream.Collectors; 43 44import jdk.test.lib.process.OutputAnalyzer; 45import jdk.test.lib.process.ProcessTools; 46import jdk.test.lib.Utils; 47 48import gc.g1.plab.lib.LogParser; 49import gc.g1.plab.lib.AppPLABEvacuationFailure; 50import gc.g1.plab.lib.PlabInfo; 51 52/** 53 * The test runs the AppPLABEvacuationFailure application to provoke a number of 54 * Evacuation Failures, parses GC log and analyzes PLAB statistics. The test checks 55 * that both fields 'failure_waste' and 'failure_used' for Evacuation Failure statistic 56 * are non zero, and zero for other statistics. 57 */ 58public class TestPLABEvacuationFailure { 59 60 /* PLAB statistics fields which are checked. 61 * Test expects to find 0 in this fields in survivor statistics. 62 * Expects to find 0 in old statistics for GC when evacuation failure 63 * did not happen. And expects to find not 0 in old statistics in case when 64 * GC causes to evacuation failure. 65 */ 66 private static final List<String> FAILURE_STAT_FIELDS = new ArrayList<>(Arrays.asList( 67 "failure used", 68 "failure wasted")); 69 70 private static final String[] COMMON_OPTIONS = { 71 "-Xlog:gc=debug,gc+plab=debug,gc+phases=trace", 72 "-XX:+UseG1GC", 73 "-XX:InitiatingHeapOccupancyPercent=100", 74 "-XX:-G1UseAdaptiveIHOP", 75 "-XX:G1HeapRegionSize=1m"}; 76 77 private static final Pattern GC_ID_PATTERN = Pattern.compile("GC\\((\\d+)\\)"); 78 private static List<Long> evacuationFailureIDs; 79 private static LogParser logParser; 80 private static String appPlabEvacFailureOutput; 81 82 public static void main(String[] args) throws Throwable { 83 // ParallelGCBufferWastePct, PLAB Size, ParallelGCBufferWastePct, MaxHeapSize, is plab fixed. 84 runTest(10, 1024, 3, 16, true); 85 runTest(15, 2048, 4, 256, true); 86 runTest(20, 65536, 7, 128, false); 87 runTest(25, 1024, 3, 16, true); 88 runTest(30, 16384, 7, 256, false); 89 runTest(10, 65536, 4, 32, false); 90 } 91 92 private static void runTest(int wastePct, int plabSize, int parGCThreads, int heapSize, boolean plabIsFixed) throws Throwable { 93 System.out.println("Test case details:"); 94 System.out.println(" Heap size : " + heapSize + "M"); 95 System.out.println(" Initial PLAB size : " + plabSize); 96 System.out.println(" Parallel GC buffer waste pct : " + wastePct); 97 System.out.println(" Parallel GC threads : " + parGCThreads); 98 System.out.println(" PLAB size is fixed: " + (plabIsFixed ? "yes" : "no")); 99 // Set up test GC and PLAB options 100 List<String> testOptions = new ArrayList<>(); 101 Collections.addAll(testOptions, COMMON_OPTIONS); 102 Collections.addAll(testOptions, Utils.getTestJavaOpts()); 103 Collections.addAll(testOptions, 104 "-XX:ParallelGCThreads=" + parGCThreads, 105 "-XX:ParallelGCBufferWastePct=" + wastePct, 106 "-XX:OldPLABSize=" + plabSize, 107 "-XX:YoungPLABSize=" + plabSize, 108 "-XX:" + (plabIsFixed ? "-" : "+") + "ResizePLAB", 109 "-XX:MaxHeapSize=" + heapSize + "m"); 110 testOptions.add(AppPLABEvacuationFailure.class.getName()); 111 OutputAnalyzer out = ProcessTools.executeTestJvm(testOptions.toArray(new String[testOptions.size()])); 112 113 appPlabEvacFailureOutput = out.getOutput(); 114 if (out.getExitValue() != 0) { 115 System.out.println(appPlabEvacFailureOutput); 116 throw new RuntimeException("Expect exit code 0."); 117 } 118 // Get list of GC ID on evacuation failure 119 evacuationFailureIDs = getGcIdPlabEvacFailures(out); 120 logParser = new LogParser(appPlabEvacFailureOutput); 121 checkResults(); 122 } 123 124 private static void checkResults() { 125 126 if (evacuationFailureIDs.isEmpty()) { 127 System.out.println(appPlabEvacFailureOutput); 128 throw new RuntimeException("AppPLABEvacuationFailure did not reach Evacuation Failure."); 129 } 130 131 Map<Long, PlabInfo> valuesToCheck = getNonEvacFailureSurvivorStats(); 132 checkValuesIsZero(valuesToCheck, "Expect that SURVIVOR PLAB failure statistics should be 0 when no evacuation failure"); 133 134 valuesToCheck = getNonEvacFailureOldStats(); 135 checkValuesIsZero(valuesToCheck, "Expect that OLD PLAB failure statistics should be 0 when no evacuation failure"); 136 137 valuesToCheck = getEvacFailureSurvivorStats(); 138 checkValuesIsZero(valuesToCheck, "Expect that failure statistics should be 0 in SURVIVOR PLAB statistics at evacuation failure"); 139 140 valuesToCheck = getEvacFailureOldStats(); 141 checkValuesIsNotZero(valuesToCheck, "Expect that failure statistics should not be 0 in OLD PLAB statistics at evacuation failure"); 142 } 143 144 /** 145 * Checks logItems for non-zero values. Throws RuntimeException if found. 146 * 147 * @param logItems 148 * @param errorMessage 149 */ 150 private static void checkValuesIsZero(Map<Long, PlabInfo> logItems, String errorMessage) { 151 checkValues(logItems, errorMessage, true); 152 } 153 154 /** 155 * Checks logItems for zero values. Throws RuntimeException if found. 156 * 157 * @param logItems 158 * @param errorMessage 159 */ 160 private static void checkValuesIsNotZero(Map<Long, PlabInfo> logItems, String errorMessage) { 161 checkValues(logItems, errorMessage, false); 162 } 163 164 private static void checkValues(Map<Long, PlabInfo> logItems, String errorMessage, boolean expectZero) { 165 logItems.entrySet() 166 .forEach(item -> item.getValue() 167 .values() 168 .forEach(items -> { 169 if (expectZero != (items == 0)) { 170 System.out.println(appPlabEvacFailureOutput); 171 throw new RuntimeException(errorMessage); 172 } 173 }) 174 ); 175 } 176 177 /** 178 * For tracking PLAB statistics for specified PLAB type - survivor and old 179 */ 180 private static Map<Long, PlabInfo> getNonEvacFailureSurvivorStats() { 181 return logParser.getExcludedSpecifiedStats(evacuationFailureIDs, LogParser.ReportType.SURVIVOR_STATS, FAILURE_STAT_FIELDS); 182 } 183 184 private static Map<Long, PlabInfo> getNonEvacFailureOldStats() { 185 return logParser.getExcludedSpecifiedStats(evacuationFailureIDs, LogParser.ReportType.OLD_STATS, FAILURE_STAT_FIELDS); 186 } 187 188 private static Map<Long, PlabInfo> getEvacFailureSurvivorStats() { 189 return logParser.getSpecifiedStats(evacuationFailureIDs, LogParser.ReportType.SURVIVOR_STATS, FAILURE_STAT_FIELDS); 190 } 191 192 private static Map<Long, PlabInfo> getEvacFailureOldStats() { 193 return logParser.getSpecifiedStats(evacuationFailureIDs, LogParser.ReportType.OLD_STATS, FAILURE_STAT_FIELDS); 194 } 195 196 private static List<Long> getGcIdPlabEvacFailures(OutputAnalyzer out) { 197 return out.asLines().stream() 198 .filter(line -> line.contains("Evacuation Failure")) 199 .map(line -> LogParser.getGcIdFromLine(line, GC_ID_PATTERN)) 200 .collect(Collectors.toList()); 201 } 202} 203