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annotate test/gc/g1/TestLargePageUseForAuxMemory.java @ 22982:0956bdcc671e

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8078375: [TESTBUG] gc/g1/TestLargePageUseForAuxMemory.java specifies wrong library path Reviewed-by: jmasa, jwilhelm
author tschatzl
date Fri, 24 Apr 2015 09:47:07 +0200
parents 33e421924c67
children
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1 /*
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2 * Copyright (c) 2015, 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 TestLargePageUseForAuxMemory.java
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26 * @bug 8058354
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27 * @key gc
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28 * @library /testlibrary /testlibrary/whitebox
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29 * @requires (vm.gc=="G1" | vm.gc=="null")
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30 * @build TestLargePageUseForAuxMemory
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31 * @run main ClassFileInstaller sun.hotspot.WhiteBox
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32 * sun.hotspot.WhiteBox$WhiteBoxPermission
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33 * @summary Test that auxiliary data structures are allocated using large pages if available.
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34 * @run main/othervm -Xbootclasspath/a:. -XX:+UseG1GC -XX:+WhiteBoxAPI -XX:+IgnoreUnrecognizedVMOptions -XX:+UseLargePages TestLargePageUseForAuxMemory
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35 */
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36
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37 import com.oracle.java.testlibrary.*;
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38 import sun.hotspot.WhiteBox;
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39
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40 public class TestLargePageUseForAuxMemory {
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41 static final int HEAP_REGION_SIZE = 4 * 1024 * 1024;
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42 static long largePageSize;
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43 static long smallPageSize;
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44
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45 static void checkSmallTables(OutputAnalyzer output, long expectedPageSize) throws Exception {
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46 output.shouldContain("G1 'Block offset table': pg_sz=" + expectedPageSize);
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47 output.shouldContain("G1 'Card counts table': pg_sz=" + expectedPageSize);
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48 }
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49
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50 static void checkBitmaps(OutputAnalyzer output, long expectedPageSize) throws Exception {
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51 output.shouldContain("G1 'Prev Bitmap': pg_sz=" + expectedPageSize);
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52 output.shouldContain("G1 'Next Bitmap': pg_sz=" + expectedPageSize);
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53 }
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54
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55 static void testVM(long heapsize, boolean cardsShouldUseLargePages, boolean bitmapShouldUseLargePages) throws Exception {
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56 ProcessBuilder pb;
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57 // Test with large page enabled.
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58 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
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59 "-XX:G1HeapRegionSize=" + HEAP_REGION_SIZE,
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60 "-Xms" + 10 * HEAP_REGION_SIZE,
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61 "-Xmx" + heapsize,
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62 "-XX:+TracePageSizes",
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63 "-XX:+UseLargePages",
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64 "-XX:+IgnoreUnrecognizedVMOptions", // there is on ObjectAlignmentInBytes in 32 bit builds
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65 "-XX:ObjectAlignmentInBytes=8",
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66 "-version");
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67
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68 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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69 checkSmallTables(output, (cardsShouldUseLargePages ? largePageSize : smallPageSize));
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70 checkBitmaps(output, (bitmapShouldUseLargePages ? largePageSize : smallPageSize));
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71 output.shouldHaveExitValue(0);
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72
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73 // Test with large page disabled.
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74 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
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75 "-XX:G1HeapRegionSize=" + HEAP_REGION_SIZE,
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76 "-Xms" + 10 * HEAP_REGION_SIZE,
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77 "-Xmx" + heapsize,
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78 "-XX:+TracePageSizes",
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79 "-XX:-UseLargePages",
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80 "-XX:+IgnoreUnrecognizedVMOptions", // there is on ObjectAlignmentInBytes in 32 bit builds
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81 "-XX:ObjectAlignmentInBytes=8",
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82 "-version");
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83
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84 output = new OutputAnalyzer(pb.start());
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85 checkSmallTables(output, smallPageSize);
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86 checkBitmaps(output, smallPageSize);
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87 output.shouldHaveExitValue(0);
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88 }
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89
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90 public static void main(String[] args) throws Exception {
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91 if (!Platform.isDebugBuild()) {
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92 System.out.println("Skip tests on non-debug builds because the required option TracePageSizes is a debug-only option.");
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93 return;
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94 }
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95
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96 WhiteBox wb = WhiteBox.getWhiteBox();
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97 smallPageSize = wb.getVMPageSize();
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98 largePageSize = wb.getVMLargePageSize();
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99
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100 if (largePageSize == 0) {
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101 System.out.println("Skip tests because large page support does not seem to be available on this platform.");
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102 return;
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103 }
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104
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105 // To get large pages for the card table etc. we need at least a 1G heap (with 4k page size).
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106 // 32 bit systems will have problems reserving such an amount of contiguous space, so skip the
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107 // test there.
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108 if (!Platform.is32bit()) {
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109 // Size that a single card covers.
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110 final int cardSize = 512;
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111
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112 final long heapSizeForCardTableUsingLargePages = largePageSize * cardSize;
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113
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114 testVM(heapSizeForCardTableUsingLargePages, true, true);
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115 testVM(heapSizeForCardTableUsingLargePages + HEAP_REGION_SIZE, true, true);
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116 testVM(heapSizeForCardTableUsingLargePages - HEAP_REGION_SIZE, false, true);
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117 }
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118
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119 // Minimum heap requirement to get large pages for bitmaps is 128M heap. This seems okay to test
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120 // everywhere.
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121 final int bitmapTranslationFactor = 8 * 8; // ObjectAlignmentInBytes * BitsPerByte
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122 final long heapSizeForBitmapUsingLargePages = largePageSize * bitmapTranslationFactor;
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123
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124 testVM(heapSizeForBitmapUsingLargePages, false, true);
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125 testVM(heapSizeForBitmapUsingLargePages + HEAP_REGION_SIZE, false, true);
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126 testVM(heapSizeForBitmapUsingLargePages - HEAP_REGION_SIZE, false, false);
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127 }
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128 }
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129