| /* |
| * 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 |
| * @library /test/lib / |
| * @modules java.base/jdk.internal.misc |
| * @modules java.management |
| * @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.process.OutputAnalyzer; |
| import jdk.test.lib.process.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<String> 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<Long> 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<String> 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<Long, PlabInfo> 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<Long, PlabInfo> 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<Long, PlabInfo> logItems, String errorMessage) { |
| checkValues(logItems, errorMessage, false); |
| } |
| |
| private static void checkValues(Map<Long, PlabInfo> 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<Long, PlabInfo> getNonEvacFailureSurvivorStats() { |
| return logParser.getExcludedSpecifiedStats(evacuationFailureIDs, LogParser.ReportType.SURVIVOR_STATS, FAILURE_STAT_FIELDS); |
| } |
| |
| private static Map<Long, PlabInfo> getNonEvacFailureOldStats() { |
| return logParser.getExcludedSpecifiedStats(evacuationFailureIDs, LogParser.ReportType.OLD_STATS, FAILURE_STAT_FIELDS); |
| } |
| |
| private static Map<Long, PlabInfo> getEvacFailureSurvivorStats() { |
| return logParser.getSpecifiedStats(evacuationFailureIDs, LogParser.ReportType.SURVIVOR_STATS, FAILURE_STAT_FIELDS); |
| } |
| |
| private static Map<Long, PlabInfo> getEvacFailureOldStats() { |
| return logParser.getSpecifiedStats(evacuationFailureIDs, LogParser.ReportType.OLD_STATS, FAILURE_STAT_FIELDS); |
| } |
| |
| private static List<Long> getGcIdPlabEvacFailures(OutputAnalyzer out) { |
| return out.asLines().stream() |
| .filter(line -> line.contains("Evacuation Failure")) |
| .map(line -> LogParser.getGcIdFromLine(line, GC_ID_PATTERN)) |
| .collect(Collectors.toList()); |
| } |
| } |