/* * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * @test TestPLABEvacuationFailure * @bug 8148376 * @summary Checks PLAB statistics on evacuation failure * @requires vm.gc=="G1" | vm.gc=="null" * @library /testlibrary / * @modules java.management * @build gc.g1.plab.lib.LogParser * gc.g1.plab.lib.AppPLABEvacuationFailure * @run main gc.g1.plab.TestPLABEvacuationFailure */ package gc.g1.plab; import java.util.Arrays; import java.util.List; import java.util.Map; import java.util.ArrayList; import java.util.Collections; import java.util.regex.Pattern; import java.util.stream.Collectors; import jdk.test.lib.OutputAnalyzer; import jdk.test.lib.ProcessTools; import jdk.test.lib.Utils; import gc.g1.plab.lib.LogParser; import gc.g1.plab.lib.AppPLABEvacuationFailure; import gc.g1.plab.lib.PlabInfo; /** * The test runs the AppPLABEvacuationFailure application to provoke a number of * Evacuation Failures, parses GC log and analyzes PLAB statistics. The test checks * that both fields 'failure_waste' and 'failure_used' for Evacuation Failure statistic * are non zero, and zero for other statistics. */ public class TestPLABEvacuationFailure { /* PLAB statistics fields which are checked. * Test expects to find 0 in this fields in survivor statistics. * Expects to find 0 in old statistics for GC when evacuation failure * did not happen. And expects to find not 0 in old statistics in case when * GC causes to evacuation failure. */ private static final List FAILURE_STAT_FIELDS = new ArrayList<>(Arrays.asList( "failure used", "failure wasted")); private static final String[] COMMON_OPTIONS = { "-Xlog:gc=debug,gc+plab=debug,gc+phases=trace", "-XX:+UseG1GC", "-XX:InitiatingHeapOccupancyPercent=100", "-XX:-G1UseAdaptiveIHOP", "-XX:G1HeapRegionSize=1m"}; private static final Pattern GC_ID_PATTERN = Pattern.compile("GC\\((\\d+)\\)"); private static List evacuationFailureIDs; private static LogParser logParser; private static String appPlabEvacFailureOutput; public static void main(String[] args) throws Throwable { // ParallelGCBufferWastePct, PLAB Size, ParallelGCBufferWastePct, MaxHeapSize, is plab fixed. runTest(10, 1024, 3, 16, true); runTest(15, 2048, 4, 256, true); runTest(20, 65536, 7, 128, false); runTest(25, 1024, 3, 16, true); runTest(30, 16384, 7, 256, false); runTest(10, 65536, 4, 32, false); } private static void runTest(int wastePct, int plabSize, int parGCThreads, int heapSize, boolean plabIsFixed) throws Throwable { System.out.println("Test case details:"); System.out.println(" Heap size : " + heapSize + "M"); System.out.println(" Initial PLAB size : " + plabSize); System.out.println(" Parallel GC buffer waste pct : " + wastePct); System.out.println(" Parallel GC threads : " + parGCThreads); System.out.println(" PLAB size is fixed: " + (plabIsFixed ? "yes" : "no")); // Set up test GC and PLAB options List testOptions = new ArrayList<>(); Collections.addAll(testOptions, COMMON_OPTIONS); Collections.addAll(testOptions, Utils.getTestJavaOpts()); Collections.addAll(testOptions, "-XX:ParallelGCThreads=" + parGCThreads, "-XX:ParallelGCBufferWastePct=" + wastePct, "-XX:OldPLABSize=" + plabSize, "-XX:YoungPLABSize=" + plabSize, "-XX:" + (plabIsFixed ? "-" : "+") + "ResizePLAB", "-XX:MaxHeapSize=" + heapSize + "m"); testOptions.add(AppPLABEvacuationFailure.class.getName()); OutputAnalyzer out = ProcessTools.executeTestJvm(testOptions.toArray(new String[testOptions.size()])); appPlabEvacFailureOutput = out.getOutput(); if (out.getExitValue() != 0) { System.out.println(appPlabEvacFailureOutput); throw new RuntimeException("Expect exit code 0."); } // Get list of GC ID on evacuation failure evacuationFailureIDs = getGcIdPlabEvacFailures(out); logParser = new LogParser(appPlabEvacFailureOutput); checkResults(); } private static void checkResults() { if (evacuationFailureIDs.isEmpty()) { System.out.println(appPlabEvacFailureOutput); throw new RuntimeException("AppPLABEvacuationFailure did not reach Evacuation Failure."); } Map valuesToCheck = getNonEvacFailureSurvivorStats(); checkValuesIsZero(valuesToCheck, "Expect that SURVIVOR PLAB failure statistics should be 0 when no evacuation failure"); valuesToCheck = getNonEvacFailureOldStats(); checkValuesIsZero(valuesToCheck, "Expect that OLD PLAB failure statistics should be 0 when no evacuation failure"); valuesToCheck = getEvacFailureSurvivorStats(); checkValuesIsZero(valuesToCheck, "Expect that failure statistics should be 0 in SURVIVOR PLAB statistics at evacuation failure"); valuesToCheck = getEvacFailureOldStats(); checkValuesIsNotZero(valuesToCheck, "Expect that failure statistics should not be 0 in OLD PLAB statistics at evacuation failure"); } /** * Checks logItems for non-zero values. Throws RuntimeException if found. * * @param logItems * @param errorMessage */ private static void checkValuesIsZero(Map logItems, String errorMessage) { checkValues(logItems, errorMessage, true); } /** * Checks logItems for zero values. Throws RuntimeException if found. * * @param logItems * @param errorMessage */ private static void checkValuesIsNotZero(Map logItems, String errorMessage) { checkValues(logItems, errorMessage, false); } private static void checkValues(Map logItems, String errorMessage, boolean expectZero) { logItems.entrySet() .forEach(item -> item.getValue() .values() .forEach(items -> { if (expectZero != (items == 0)) { System.out.println(appPlabEvacFailureOutput); throw new RuntimeException(errorMessage); } }) ); } /** * For tracking PLAB statistics for specified PLAB type - survivor and old */ private static Map getNonEvacFailureSurvivorStats() { return logParser.getExcludedSpecifiedStats(evacuationFailureIDs, LogParser.ReportType.SURVIVOR_STATS, FAILURE_STAT_FIELDS); } private static Map getNonEvacFailureOldStats() { return logParser.getExcludedSpecifiedStats(evacuationFailureIDs, LogParser.ReportType.OLD_STATS, FAILURE_STAT_FIELDS); } private static Map getEvacFailureSurvivorStats() { return logParser.getSpecifiedStats(evacuationFailureIDs, LogParser.ReportType.SURVIVOR_STATS, FAILURE_STAT_FIELDS); } private static Map getEvacFailureOldStats() { return logParser.getSpecifiedStats(evacuationFailureIDs, LogParser.ReportType.OLD_STATS, FAILURE_STAT_FIELDS); } private static List getGcIdPlabEvacFailures(OutputAnalyzer out) { return out.asLines().stream() .filter(line -> line.contains("Evacuation Failure")) .map(line -> LogParser.getGcIdFromLine(line, GC_ID_PATTERN)) .collect(Collectors.toList()); } }