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annotate test/runtime/memory/LargePages/TestLargePagesFlags.java @ 13053:9d8b29a0548c

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8027237: New tests on ReservedSpace/VirtualSpace classes Summary: Three tests added: 1) test stressing VirtualSpace by resizing it constantly 2) test running unit tests in several threads 3) test checking protected area in ReservedHeapSpace class Reviewed-by: stefank, zgu Contributed-by: aleksey.timofeev@oracle.com
author mgerdin
date Fri, 08 Nov 2013 16:48:21 +0100
parents 263f2c796d6c
children
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12832
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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 /* @test TestLargePagesFlags
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25 * @summary Tests how large pages are choosen depending on the given large pages flag combinations.
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26 * @library /testlibrary
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27 * @run main TestLargePagesFlags
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28 */
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29
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30 import com.oracle.java.testlibrary.OutputAnalyzer;
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31 import com.oracle.java.testlibrary.Platform;
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32 import com.oracle.java.testlibrary.ProcessTools;
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33 import java.util.ArrayList;
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34
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35 public class TestLargePagesFlags {
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36
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37 public static void main(String [] args) throws Exception {
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38 if (!Platform.isLinux()) {
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39 System.out.println("Skipping. TestLargePagesFlags has only been implemented for Linux.");
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40 return;
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41 }
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42
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43 testUseTransparentHugePages();
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44 testUseHugeTLBFS();
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45 testUseSHM();
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46 testCombinations();
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47 }
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48
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49 public static void testUseTransparentHugePages() throws Exception {
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50 if (!canUse(UseTransparentHugePages(true))) {
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51 System.out.println("Skipping testUseTransparentHugePages");
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52 return;
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53 }
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54
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55 // -XX:-UseLargePages overrides all other flags.
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56 new FlagTester()
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57 .use(UseLargePages(false),
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58 UseTransparentHugePages(true))
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59 .expect(
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60 UseLargePages(false),
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61 UseTransparentHugePages(false),
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62 UseHugeTLBFS(false),
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63 UseSHM(false));
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64
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65 // Explicitly turn on UseTransparentHugePages.
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66 new FlagTester()
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67 .use(UseTransparentHugePages(true))
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68 .expect(
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69 UseLargePages(true),
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70 UseTransparentHugePages(true),
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71 UseHugeTLBFS(false),
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72 UseSHM(false));
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73
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74 new FlagTester()
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75 .use(UseLargePages(true),
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76 UseTransparentHugePages(true))
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77 .expect(
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78 UseLargePages(true),
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79 UseTransparentHugePages(true),
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80 UseHugeTLBFS(false),
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81 UseSHM(false));
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82
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83 // Setting a specific large pages flag will turn
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84 // off heuristics to choose large pages type.
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85 new FlagTester()
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86 .use(UseLargePages(true),
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87 UseTransparentHugePages(false))
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88 .expect(
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89 UseLargePages(false),
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90 UseTransparentHugePages(false),
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91 UseHugeTLBFS(false),
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92 UseSHM(false));
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93
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94 // Don't turn on UseTransparentHugePages
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95 // unless the user explicitly asks for them.
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96 new FlagTester()
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97 .use(UseLargePages(true))
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98 .expect(
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99 UseTransparentHugePages(false));
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100 }
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101
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102 public static void testUseHugeTLBFS() throws Exception {
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103 if (!canUse(UseHugeTLBFS(true))) {
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104 System.out.println("Skipping testUseHugeTLBFS");
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105 return;
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106 }
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107
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108 // -XX:-UseLargePages overrides all other flags.
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109 new FlagTester()
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110 .use(UseLargePages(false),
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111 UseHugeTLBFS(true))
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112 .expect(
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113 UseLargePages(false),
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114 UseTransparentHugePages(false),
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115 UseHugeTLBFS(false),
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116 UseSHM(false));
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117
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118 // Explicitly turn on UseHugeTLBFS.
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119 new FlagTester()
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120 .use(UseHugeTLBFS(true))
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121 .expect(
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122 UseLargePages(true),
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123 UseTransparentHugePages(false),
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124 UseHugeTLBFS(true),
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125 UseSHM(false));
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126
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127 new FlagTester()
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128 .use(UseLargePages(true),
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129 UseHugeTLBFS(true))
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130 .expect(
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131 UseLargePages(true),
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132 UseTransparentHugePages(false),
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133 UseHugeTLBFS(true),
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134 UseSHM(false));
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135
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136 // Setting a specific large pages flag will turn
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137 // off heuristics to choose large pages type.
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138 new FlagTester()
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139 .use(UseLargePages(true),
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140 UseHugeTLBFS(false))
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141 .expect(
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142 UseLargePages(false),
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143 UseTransparentHugePages(false),
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144 UseHugeTLBFS(false),
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145 UseSHM(false));
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146
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147 // Using UseLargePages will default to UseHugeTLBFS large pages.
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148 new FlagTester()
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149 .use(UseLargePages(true))
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150 .expect(
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151 UseLargePages(true),
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152 UseTransparentHugePages(false),
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153 UseHugeTLBFS(true),
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154 UseSHM(false));
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155 }
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156
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157 public static void testUseSHM() throws Exception {
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158 if (!canUse(UseSHM(true))) {
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159 System.out.println("Skipping testUseSHM");
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160 return;
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161 }
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162
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163 // -XX:-UseLargePages overrides all other flags.
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164 new FlagTester()
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165 .use(UseLargePages(false),
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166 UseSHM(true))
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167 .expect(
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168 UseLargePages(false),
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169 UseTransparentHugePages(false),
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170 UseHugeTLBFS(false),
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171 UseSHM(false));
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172
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173 // Explicitly turn on UseSHM.
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174 new FlagTester()
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175 .use(UseSHM(true))
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176 .expect(
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177 UseLargePages(true),
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diff changeset
178 UseTransparentHugePages(false),
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179 UseHugeTLBFS(false),
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180 UseSHM(true)) ;
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181
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182 new FlagTester()
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183 .use(UseLargePages(true),
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184 UseSHM(true))
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185 .expect(
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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186 UseLargePages(true),
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diff changeset
187 UseTransparentHugePages(false),
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diff changeset
188 UseHugeTLBFS(false),
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diff changeset
189 UseSHM(true)) ;
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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190
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191 // Setting a specific large pages flag will turn
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192 // off heuristics to choose large pages type.
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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193 new FlagTester()
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194 .use(UseLargePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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195 UseSHM(false))
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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196 .expect(
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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197 UseLargePages(false),
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198 UseTransparentHugePages(false),
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199 UseHugeTLBFS(false),
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200 UseSHM(false));
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201
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202 // Setting UseLargePages can allow the system to choose
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203 // UseHugeTLBFS instead of UseSHM, but never UseTransparentHugePages.
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204 new FlagTester()
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205 .use(UseLargePages(true))
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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206 .expect(
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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207 UseLargePages(true),
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208 UseTransparentHugePages(false));
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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209 }
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210
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211 public static void testCombinations() throws Exception {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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212 if (!canUse(UseSHM(true)) || !canUse(UseHugeTLBFS(true))) {
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213 System.out.println("Skipping testUseHugeTLBFSAndUseSHMCombination");
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214 return;
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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215 }
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216
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217 // UseHugeTLBFS takes precedence over SHM.
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218
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219 new FlagTester()
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
220 .use(UseLargePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
221 UseHugeTLBFS(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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222 UseSHM(true))
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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223 .expect(
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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224 UseLargePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
225 UseTransparentHugePages(false),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
226 UseHugeTLBFS(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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227 UseSHM(false));
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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228
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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229 new FlagTester()
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
230 .use(UseLargePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
231 UseHugeTLBFS(false),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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232 UseSHM(true))
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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233 .expect(
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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234 UseLargePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
235 UseTransparentHugePages(false),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
236 UseHugeTLBFS(false),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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237 UseSHM(true));
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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238
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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239 new FlagTester()
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
240 .use(UseLargePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
241 UseHugeTLBFS(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
242 UseSHM(false))
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
243 .expect(
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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244 UseLargePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
245 UseTransparentHugePages(false),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
246 UseHugeTLBFS(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
247 UseSHM(false));
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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248
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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249 new FlagTester()
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
250 .use(UseLargePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
251 UseHugeTLBFS(false),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
252 UseSHM(false))
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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253 .expect(
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
254 UseLargePages(false),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
255 UseTransparentHugePages(false),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
256 UseHugeTLBFS(false),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
257 UseSHM(false));
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
258
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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259
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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260 if (!canUse(UseTransparentHugePages(true))) {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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261 return;
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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262 }
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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263
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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264 // UseTransparentHugePages takes precedence.
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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265
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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266 new FlagTester()
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
267 .use(UseLargePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
268 UseTransparentHugePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
269 UseHugeTLBFS(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
270 UseSHM(true))
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
271 .expect(
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
272 UseLargePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
273 UseTransparentHugePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
274 UseHugeTLBFS(false),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
275 UseSHM(false));
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
276
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
277 new FlagTester()
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
278 .use(UseTransparentHugePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
279 UseHugeTLBFS(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
280 UseSHM(true))
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
281 .expect(
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
282 UseLargePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
283 UseTransparentHugePages(true),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
284 UseHugeTLBFS(false),
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
285 UseSHM(false));
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
286 }
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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287
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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288 private static class FlagTester {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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289 private Flag [] useFlags;
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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290
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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291 public FlagTester use(Flag... useFlags) {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
292 this.useFlags = useFlags;
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
293 return this;
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
294 }
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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295
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
296 public void expect(Flag... expectedFlags) throws Exception {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
297 if (useFlags == null) {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
298 throw new IllegalStateException("Must run use() before expect()");
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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299 }
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
300
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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301 OutputAnalyzer output = executeNewJVM(useFlags);
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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302
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
303 for (Flag flag : expectedFlags) {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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304 System.out.println("Looking for: " + flag.flagString());
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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305 String strValue = output.firstMatch(".* " + flag.name() + " .* :?= (\\S+).*", 1);
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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306
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
307 if (strValue == null) {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
308 throw new RuntimeException("Flag " + flag.name() + " couldn't be found");
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
309 }
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
310
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
311 if (!flag.value().equals(strValue)) {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
312 throw new RuntimeException("Wrong value for: " + flag.name()
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
313 + " expected: " + flag.value()
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
314 + " got: " + strValue);
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
315 }
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
316 }
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
317
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
318 output.shouldHaveExitValue(0);
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
319 }
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
320 }
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
321
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
322 private static OutputAnalyzer executeNewJVM(Flag... flags) throws Exception {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
323 ArrayList<String> args = new ArrayList<>();
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
324 for (Flag flag : flags) {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
325 args.add(flag.flagString());
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
326 }
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
327 args.add("-XX:+PrintFlagsFinal");
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
328 args.add("-version");
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
329
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
330 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args.toArray(new String[args.size()]));
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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331 OutputAnalyzer output = new OutputAnalyzer(pb.start());
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
332
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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parents:
diff changeset
333 return output;
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
334 }
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
335
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
336 private static boolean canUse(Flag flag) {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
337 try {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
338 new FlagTester().use(flag).expect(flag);
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
339 } catch (Exception e) {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
340 return false;
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
341 }
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
342
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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parents:
diff changeset
343 return true;
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
344 }
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
345
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
346 private static Flag UseLargePages(boolean value) {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
347 return new BooleanFlag("UseLargePages", value);
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
348 }
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
349
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
350 private static Flag UseTransparentHugePages(boolean value) {
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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diff changeset
351 return new BooleanFlag("UseTransparentHugePages", value);
263f2c796d6c 8024838: Significant slowdown due to transparent huge pages
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352 }
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353
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354 private static Flag UseHugeTLBFS(boolean value) {
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355 return new BooleanFlag("UseHugeTLBFS", value);
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356 }
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357
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358 private static Flag UseSHM(boolean value) {
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359 return new BooleanFlag("UseSHM", value);
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360 }
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361
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362 private static class BooleanFlag implements Flag {
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363 private String name;
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364 private boolean value;
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365
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366 BooleanFlag(String name, boolean value) {
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367 this.name = name;
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368 this.value = value;
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369 }
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370
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371 public String flagString() {
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372 return "-XX:" + (value ? "+" : "-") + name;
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373 }
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374
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375 public String name() {
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376 return name;
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377 }
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378
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379 public String value() {
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380 return Boolean.toString(value);
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381 }
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382 }
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383
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384 private static interface Flag {
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385 public String flagString();
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386 public String name();
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387 public String value();
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388 }
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389 }