Mercurial > hg > truffle
annotate make/hotspot.script @ 20543:e7d0505c8a30
8059758: Footprint regressions with JDK-8038423
Summary: Changes in JDK-8038423 always initialize (zero out) virtual memory used for auxiliary data structures. This causes a footprint regression for G1 in startup benchmarks. This is because they do not touch that memory at all, so the operating system does not actually commit these pages. The fix is to, if the initialization value of the data structures matches the default value of just committed memory (=0), do not do anything.
Reviewed-by: jwilhelm, brutisso
| author | tschatzl |
|---|---|
| date | Fri, 10 Oct 2014 15:51:58 +0200 |
| parents | 55fb97c4c58d |
| children | b59507f713e0 |
| rev | line source |
|---|---|
| 3960 | 1 #!/bin/sh |
| 1985 | 2 |
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3 # Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
| 1985 | 4 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 5 # | |
| 6 # This code is free software; you can redistribute it and/or modify it | |
| 7 # under the terms of the GNU General Public License version 2 only, as | |
| 8 # published by the Free Software Foundation. | |
| 9 # | |
| 10 # This code is distributed in the hope that it will be useful, but WITHOUT | |
| 11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 13 # version 2 for more details (a copy is included in the LICENSE file that | |
| 14 # accompanied this code). | |
| 15 # | |
| 16 # You should have received a copy of the GNU General Public License version | |
| 17 # 2 along with this work; if not, write to the Free Software Foundation, | |
| 18 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 19 # | |
| 20 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 21 # or visit www.oracle.com if you need additional information or have any | |
| 22 # questions. | |
| 23 | |
| 24 | |
| 25 # This script launches HotSpot. | |
| 26 # | |
| 27 # If the first parameter is either "-gdb" or "-gud", HotSpot will be | |
| 28 # launched inside gdb. "-gud" means "open an Emacs window and run gdb | |
| 29 # inside Emacs". | |
| 30 # | |
| 31 # If the first parameter is "-dbx", HotSpot will be launched inside dbx. | |
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32 # |
| 1985 | 33 # If the first parameter is "-valgrind", HotSpot will be launched |
| 34 # inside Valgrind (http://valgrind.kde.org) using the Memcheck skin, | |
| 35 # and with memory leak detection enabled. This currently (2005jan19) | |
| 36 # requires at least Valgrind 2.3.0. -Xmx16m will also be passed as | |
| 37 # the first parameter to HotSpot, since lowering HotSpot's memory | |
| 38 # consumption makes execution inside of Valgrind *a lot* faster. | |
| 39 # | |
| 40 | |
| 41 | |
| 42 # | |
| 43 # User changeable parameters ------------------------------------------------ | |
| 44 # | |
| 45 | |
| 46 # This is the name of the gdb binary to use | |
| 47 if [ ! "$GDB" ] | |
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48 then |
| 1985 | 49 GDB=gdb |
| 50 fi | |
| 51 | |
| 52 # This is the name of the gdb binary to use | |
| 53 if [ ! "$DBX" ] | |
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54 then |
| 1985 | 55 DBX=dbx |
| 56 fi | |
| 57 | |
| 58 # This is the name of the Valgrind binary to use | |
| 59 if [ ! "$VALGRIND" ] | |
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60 then |
| 1985 | 61 VALGRIND=valgrind |
| 62 fi | |
| 63 | |
| 64 # This is the name of Emacs for running GUD | |
| 65 EMACS=emacs | |
| 66 | |
| 67 # | |
| 68 # End of user changeable parameters ----------------------------------------- | |
| 69 # | |
| 70 | |
| 71 # Make sure the paths are fully specified, i.e. they must begin with /. | |
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72 REL_MYDIR=`dirname $0` |
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73 MYDIR=`cd $REL_MYDIR && pwd` |
| 1985 | 74 |
| 10277 | 75 # |
| 1985 | 76 # Look whether the user wants to run inside gdb |
| 77 case "$1" in | |
| 78 -gdb) | |
| 79 MODE=gdb | |
| 80 shift | |
| 81 ;; | |
| 82 -gud) | |
| 83 MODE=gud | |
| 84 shift | |
| 85 ;; | |
| 86 -dbx) | |
| 87 MODE=dbx | |
| 88 shift | |
| 89 ;; | |
| 90 -valgrind) | |
| 91 MODE=valgrind | |
| 92 shift | |
| 93 ;; | |
| 94 *) | |
| 95 MODE=run | |
| 96 ;; | |
| 97 esac | |
| 98 | |
| 10277 | 99 if [ "${ALT_JAVA_HOME}" != "" ]; then |
| 100 JDK=${ALT_JAVA_HOME%%/jre} | |
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101 else |
| 10277 | 102 JDK=@@JDK_IMPORT_PATH@@ |
| 1985 | 103 fi |
| 104 | |
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105 if [ "${JDK}" = "" ]; then |
| 10277 | 106 echo "Failed to find JDK. Either ALT_JAVA_HOME is not set or JDK_IMPORT_PATH is empty." |
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107 fi |
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108 |
| 1985 | 109 # We will set the LD_LIBRARY_PATH as follows: |
| 110 # o $JVMPATH (directory portion only) | |
| 111 # o $JRE/lib/$ARCH | |
| 112 # followed by the user's previous effective LD_LIBRARY_PATH, if | |
| 113 # any. | |
| 114 JRE=$JDK/jre | |
| 115 JAVA_HOME=$JDK | |
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116 export JAVA_HOME |
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117 |
| 1985 | 118 ARCH=@@LIBARCH@@ |
| 119 SBP=${MYDIR}:${JRE}/lib/${ARCH} | |
| 120 | |
| 121 | |
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122 # Set up a suitable LD_LIBRARY_PATH or DYLD_LIBRARY_PATH |
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123 OS=`uname -s` |
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124 if [ "${OS}" = "Darwin" ] |
| 1985 | 125 then |
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126 if [ -z "$DYLD_LIBRARY_PATH" ] |
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127 then |
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128 DYLD_LIBRARY_PATH="$SBP" |
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129 else |
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130 DYLD_LIBRARY_PATH="$SBP:$DYLD_LIBRARY_PATH" |
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131 fi |
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132 export DYLD_LIBRARY_PATH |
| 1985 | 133 else |
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134 # not 'Darwin' |
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135 if [ -z "$LD_LIBRARY_PATH" ] |
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136 then |
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137 LD_LIBRARY_PATH="$SBP" |
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138 else |
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139 LD_LIBRARY_PATH="$SBP:$LD_LIBRARY_PATH" |
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140 fi |
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141 export LD_LIBRARY_PATH |
| 1985 | 142 fi |
| 143 | |
| 10277 | 144 JPARMS="-Dsun.java.launcher=gamma -XXaltjvm=$MYDIR $@ $JAVA_ARGS"; |
| 1985 | 145 |
| 10277 | 146 # Locate the java launcher |
| 147 LAUNCHER=$JDK/bin/java | |
| 1985 | 148 if [ ! -x $LAUNCHER ] ; then |
| 10277 | 149 echo Error: Cannot find the java launcher \"$LAUNCHER\" |
| 1985 | 150 exit 1 |
| 151 fi | |
| 152 | |
| 153 GDBSRCDIR=$MYDIR | |
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154 BASEDIR=`cd $MYDIR/../../.. && pwd` |
| 1985 | 155 |
| 156 init_gdb() { | |
| 157 # Create a gdb script in case we should run inside gdb | |
| 158 GDBSCR=/tmp/hsl.$$ | |
| 159 rm -f $GDBSCR | |
| 160 cat >>$GDBSCR <<EOF | |
| 161 cd `pwd` | |
| 162 handle SIGUSR1 nostop noprint | |
| 163 handle SIGUSR2 nostop noprint | |
| 164 set args $JPARMS | |
| 165 file $LAUNCHER | |
| 166 directory $GDBSRCDIR | |
| 167 # Get us to a point where we can set breakpoints in libjvm.so | |
| 10277 | 168 set breakpoint pending on |
| 169 break JNI_CreateJavaVM | |
| 1985 | 170 run |
| 10277 | 171 # Stop in JNI_CreateJavaVM |
| 1985 | 172 delete 1 |
| 173 # We can now set breakpoints wherever we like | |
| 174 EOF | |
| 175 } | |
| 176 | |
| 177 | |
| 178 case "$MODE" in | |
| 179 gdb) | |
| 180 init_gdb | |
| 181 $GDB -x $GDBSCR | |
| 182 rm -f $GDBSCR | |
| 183 ;; | |
| 184 gud) | |
| 185 init_gdb | |
| 186 # First find out what emacs version we're using, so that we can | |
| 187 # use the new pretty GDB mode if emacs -version >= 22.1 | |
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188 case `$EMACS -version 2> /dev/null` in |
| 1985 | 189 *GNU\ Emacs\ 2[23]*) |
| 190 emacs_gud_cmd="gdba" | |
| 191 emacs_gud_args="--annotate=3" | |
| 192 ;; | |
| 193 *) | |
| 194 emacs_gud_cmd="gdb" | |
| 195 emacs_gud_args= | |
| 196 ;; | |
| 197 esac | |
| 198 $EMACS --eval "($emacs_gud_cmd \"$GDB $emacs_gud_args -x $GDBSCR\")"; | |
| 199 rm -f $GDBSCR | |
| 200 ;; | |
| 201 dbx) | |
| 10277 | 202 $DBX -s $HOME/.dbxrc -c "loadobject -load libjvm.so; stop in JNI_CreateJavaVM; run $JPARMS; delete all" $LAUNCHER |
| 1985 | 203 ;; |
| 204 valgrind) | |
| 205 echo Warning: Defaulting to 16Mb heap to make Valgrind run faster, use -Xmx for larger heap | |
| 206 echo | |
| 207 $VALGRIND --tool=memcheck --leak-check=yes --num-callers=50 $LAUNCHER -Xmx16m $JPARMS | |
| 208 ;; | |
| 209 run) | |
| 210 LD_PRELOAD=$PRELOADING exec $LAUNCHER $JPARMS | |
| 211 ;; | |
| 212 *) | |
| 213 echo Error: Internal error, unknown launch mode \"$MODE\" | |
| 214 exit 1 | |
| 215 ;; | |
| 216 esac | |
| 217 RETVAL=$? | |
| 218 exit $RETVAL |