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annotate test/runtime/CompressedOops/CompressedClassPointers.java @ 13000:209aa13ab8c0

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8024927: Nashorn performance regression with CompressedOops Summary: Allocate compressed class space at end of Java heap. For small heap sizes, without CDS, save some space so compressed classes can have the same favorable compression as oops Reviewed-by: stefank, hseigel, goetz
author coleenp
date Fri, 25 Oct 2013 15:19:29 -0400
parents
children de7f1b016d55
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1 /*
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2 * Copyright (c) 2013, 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 /*
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25 * @test
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26 * @bug 8024927
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27 * @summary Testing address of compressed class pointer space as best as possible.
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28 * @library /testlibrary
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29 */
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30
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31 import com.oracle.java.testlibrary.*;
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32
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33 public class CompressedClassPointers {
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34
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35 public static void smallHeapTest() throws Exception {
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36 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
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37 "-XX:+UnlockDiagnosticVMOptions",
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38 "-XX:SharedBaseAddress=8g",
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39 "-Xmx128m",
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40 "-XX:+PrintCompressedOopsMode",
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41 "-XX:+VerifyBeforeGC", "-version");
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42 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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43 output.shouldContain("Narrow klass base: 0x0000000000000000");
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44 output.shouldHaveExitValue(0);
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45 }
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46
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47 public static void smallHeapTestWith3G() throws Exception {
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48 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
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49 "-XX:+UnlockDiagnosticVMOptions",
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50 "-XX:CompressedClassSpaceSize=3g",
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51 "-Xmx128m",
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52 "-XX:+PrintCompressedOopsMode",
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53 "-XX:+VerifyBeforeGC", "-version");
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54 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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55 output.shouldContain("Narrow klass base: 0x0000000000000000, Narrow klass shift: 3");
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56 output.shouldHaveExitValue(0);
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57 }
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58
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59 public static void largeHeapTest() throws Exception {
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60 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
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61 "-XX:+UnlockDiagnosticVMOptions",
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62 "-Xmx30g",
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63 "-XX:+PrintCompressedOopsMode",
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64 "-XX:+VerifyBeforeGC", "-version");
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65 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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66 output.shouldNotContain("Narrow klass base: 0x0000000000000000");
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67 output.shouldContain("Narrow klass shift: 0");
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68 output.shouldHaveExitValue(0);
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69 }
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70
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71 public static void largePagesTest() throws Exception {
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72 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
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73 "-XX:+UnlockDiagnosticVMOptions",
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74 "-Xmx128m",
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75 "-XX:+UseLargePages",
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76 "-XX:+PrintCompressedOopsMode",
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77 "-XX:+VerifyBeforeGC", "-version");
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78 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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79 output.shouldContain("Narrow klass base:");
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80 output.shouldHaveExitValue(0);
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81 }
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82
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83 public static void sharingTest() throws Exception {
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84 // Test small heaps
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85 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
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86 "-XX:+UnlockDiagnosticVMOptions",
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87 "-XX:SharedArchiveFile=./sample.jsa",
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88 "-Xmx128m",
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89 "-XX:SharedBaseAddress=8g",
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90 "-XX:+PrintCompressedOopsMode",
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91 "-XX:+VerifyBeforeGC",
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92 "-Xshare:dump");
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93 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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94 try {
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95 output.shouldContain("Loading classes to share");
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96 output.shouldHaveExitValue(0);
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97
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98 pb = ProcessTools.createJavaProcessBuilder(
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99 "-XX:+UnlockDiagnosticVMOptions",
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100 "-XX:SharedArchiveFile=./sample.jsa",
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101 "-Xmx128m",
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102 "-XX:SharedBaseAddress=8g",
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103 "-XX:+PrintCompressedOopsMode",
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104 "-Xshare:on",
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105 "-version");
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106 output = new OutputAnalyzer(pb.start());
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107 output.shouldContain("sharing");
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108 output.shouldHaveExitValue(0);
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109
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110 } catch (RuntimeException e) {
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111 output.shouldContain("Unable to use shared archive");
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112 output.shouldHaveExitValue(1);
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113 }
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114 }
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115
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116 public static void main(String[] args) throws Exception {
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117 if (!Platform.is64bit()) {
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118 // Can't test this on 32 bit, just pass
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119 System.out.println("Skipping test on 32bit");
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120 return;
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121 }
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122 // Solaris 10 can't mmap compressed oops space without a base
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123 if (Platform.isSolaris()) {
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124 String name = System.getProperty("os.version");
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125 if (name.equals("5.10")) {
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126 System.out.println("Skipping test on Solaris 10");
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127 return;
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128 }
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129 }
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130 smallHeapTest();
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131 smallHeapTestWith3G();
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132 largeHeapTest();
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133 largePagesTest();
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134 sharingTest();
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135 }
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136 }