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annotate test/gc/metaspace/TestMetaspacePerfCounters.java @ 24234:ea6f94ab283b default tip

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Added tag jvmci-0.36 for changeset 8128b98d4736
author Gilles Duboscq <gilles.m.duboscq@oracle.com>
date Mon, 18 Sep 2017 18:49:45 +0200
parents f967da7f0c3c
children
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1 /*
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2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 import java.util.List;
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25 import java.util.ArrayList;
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26
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27 import com.oracle.java.testlibrary.*;
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28 import static com.oracle.java.testlibrary.Asserts.*;
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29
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30 /* @test TestMetaspacePerfCounters
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31 * @bug 8014659
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32 * @requires vm.gc=="null"
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33 * @library /testlibrary
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34 * @summary Tests that performance counters for metaspace and compressed class
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35 * space exists and works.
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36 *
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37 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UseSerialGC TestMetaspacePerfCounters
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38 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UseParallelGC -XX:+UseParallelOldGC TestMetaspacePerfCounters
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39 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UseG1GC TestMetaspacePerfCounters
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40 *
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41 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UseSerialGC TestMetaspacePerfCounters
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42 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UseParallelGC -XX:+UseParallelOldGC TestMetaspacePerfCounters
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43 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UseG1GC TestMetaspacePerfCounters
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44 */
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45 public class TestMetaspacePerfCounters {
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46 public static Class fooClass = null;
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47 private static final String[] counterNames = {"minCapacity", "maxCapacity", "capacity", "used"};
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48
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49 public static void main(String[] args) throws Exception {
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50 String metaspace = "sun.gc.metaspace";
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51 String ccs = "sun.gc.compressedclassspace";
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52
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53 checkPerfCounters(metaspace);
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54
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55 if (isUsingCompressedClassPointers()) {
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56 checkPerfCounters(ccs);
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57 checkUsedIncreasesWhenLoadingClass(ccs);
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58 } else {
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59 checkEmptyPerfCounters(ccs);
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60 checkUsedIncreasesWhenLoadingClass(metaspace);
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61 }
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62 }
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63
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64 private static void checkPerfCounters(String ns) throws Exception {
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65 long minCapacity = getMinCapacity(ns);
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66 long maxCapacity = getMaxCapacity(ns);
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67 long capacity = getCapacity(ns);
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68 long used = getUsed(ns);
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69
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70 assertGTE(minCapacity, 0L);
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71 assertGTE(used, minCapacity);
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72 assertGTE(capacity, used);
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73 assertGTE(maxCapacity, capacity);
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74 }
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75
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76 private static void checkEmptyPerfCounters(String ns) throws Exception {
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77 for (PerfCounter counter : countersInNamespace(ns)) {
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78 String msg = "Expected " + counter.getName() + " to equal 0";
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79 assertEQ(counter.longValue(), 0L, msg);
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80 }
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81 }
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82
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83 private static void checkUsedIncreasesWhenLoadingClass(String ns) throws Exception {
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84 long before = getUsed(ns);
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85 fooClass = compileAndLoad("Foo", "public class Foo { }");
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86 System.gc();
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87 long after = getUsed(ns);
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88
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89 assertGT(after, before);
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90 }
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91
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92 private static List<PerfCounter> countersInNamespace(String ns) throws Exception {
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93 List<PerfCounter> counters = new ArrayList<>();
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94 for (String name : counterNames) {
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95 counters.add(PerfCounters.findByName(ns + "." + name));
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96 }
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97 return counters;
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98 }
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99
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100 private static Class<?> compileAndLoad(String name, String source) throws Exception {
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101 byte[] byteCode = InMemoryJavaCompiler.compile(name, source);
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102 return ByteCodeLoader.load(name, byteCode);
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103 }
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104
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105 private static boolean isUsingCompressedClassPointers() {
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106 return Platform.is64bit() && InputArguments.contains("-XX:+UseCompressedClassPointers");
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107 }
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108
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109 private static long getMinCapacity(String ns) throws Exception {
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110 return PerfCounters.findByName(ns + ".minCapacity").longValue();
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111 }
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112
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113 private static long getCapacity(String ns) throws Exception {
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114 return PerfCounters.findByName(ns + ".capacity").longValue();
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115 }
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116
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117 private static long getMaxCapacity(String ns) throws Exception {
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118 return PerfCounters.findByName(ns + ".maxCapacity").longValue();
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119 }
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120
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121 private static long getUsed(String ns) throws Exception {
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122 return PerfCounters.findByName(ns + ".used").longValue();
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123 }
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124 }