--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/g1/plab/TestPLABEvacuationFailure.java Thu Apr 07 15:01:56 2016 +0000
@@ -0,0 +1,203 @@
+/*
+ * 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<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());
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/g1/plab/lib/AppPLABEvacuationFailure.java Thu Apr 07 15:01:56 2016 +0000
@@ -0,0 +1,54 @@
+/*
+ * 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.
+ */
+package gc.g1.plab.lib;
+
+import java.util.ArrayList;
+
+/**
+ * Application that provokes Evacuation Failure
+ */
+public class AppPLABEvacuationFailure {
+
+ public static final int CHUNK = 10000;
+ public static ArrayList<Object> arr = new ArrayList<>();
+
+ public static void main(String[] args) {
+ System.gc();
+ // First attempt.
+ try {
+ while (true) {
+ arr.add(new byte[CHUNK]);
+ }
+ } catch (OutOfMemoryError oome) {
+ arr.clear();
+ }
+ // Second attempt.
+ try {
+ while (true) {
+ arr.add(new byte[CHUNK]);
+ }
+ } catch (OutOfMemoryError oome) {
+ arr.clear();
+ }
+ }
+}