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diff --git a/docs/development/jvm.txt b/docs/development/jvm.txt deleted file mode 100644 index 2f8085a972..0000000000 --- a/docs/development/jvm.txt +++ /dev/null @@ -1,124 +0,0 @@ -Java Virtual Machine -==================== - - -This document gathers technical informations about the Java VM to help -Java/Scala developers tuning their runtime settings on the Java VM. - - -Java VM Options ----------------- - -* -Xmx option (maximum heap size) - - Heaps larger than 2GB are available starting with J2SE 1.3.1 - - Default: - -client: 64M (32-bit UNIX and Windows, MacOS X) - -server: 128M (MacOS X, see [vm11]) - -* -Xms option (initial heap size) - - Minimum: 1025K (Linux-i586, Solaris-i586), etc.. (see [vm08]) - Default: - -client: 2M (32-bit UNIX and Windows, MacOS X) - -server: 32M (MacOS X, see [vm11]) - -* -Xss option (thread stack size) - - Minimum: 48K (Linux-i586), 64K (Solaris-i586), etc.. (see [vm08]) - Default: 256K (32-bit UNIX and Windows) - - NB. Stack size under Windows is a link-time setting, so the executable - (java.exe) as created by Sun has this 256K limit built in. Windows - however, has a simple utility to modify the stack space of an - executable (see [vm03]). - In a command window (or Cygwin shell), use the EDITBIN command to - permanently modify the executable (WARNING! Do not reduce the stack - size below 32K, see [vm04]) - - EDITBIN /STACK:16000000 C:\Path\To\java.exe - - -Scala Environment Options -------------------------- - -* JAVACMD variable (Java command) - - Scala default: java (v2.x) - -* JAVA_OPTS variable (Java options) - - Scala default: -Xmx256M -Xms16M (v2.x) - - -In the following example, simply replace <jdk> by -"java-1.5", "java-1.6", "java-1.7" or -"java-ibm-1.5" to experiment with different Java VMs: - -> env JAVACMD=/home/linuxsoft/apps/<jdk>/bin/java \ - JAVA_OPTS="-Xmx256M -Xms16M -Xss128k" \ - test/scalatest test/files/shootout/message.scala - - - -Resources -========= - - -VM Options and Tools --------------------- - -[vm01] Some useful -XX options - http://java.sun.com/javase/technologies/hotspot/vmoptions.jsp - -[vm02] jvmstat 3.0 - http://java.sun.com/performance/jvmstat/ - -[vm03] Modify the actual java.exe executable on Windows - http://www.eyesopen.com/docs/html/javaprog/node7.html - -[vm04] Configuring server stack size - https://ssa.usyd.edu.au/docs/eassag/eassag20.htm - -[vm06] Tuning the Java Runtime System - http://docs.sun.com/source/817-2180-10/pt_chap5.html - -[vm07] JVM Tuning - http://www.caucho.com/resin-3.0/performance/jvm-tuning.xtp - -[vm08] Java HotSpot: load the VM from a non-primordial thread and effects - on stack and heap limits. - http://blogs.sun.com/ksrini/entry/hotspot_primordial_thread_jni_stack - -[vm09] A Collection of JVM Options (13-Dec-2005) - http://blogs.sun.com/watt/resource/jvm-options-list.html - -[vm10] The Java VM for Mac OS X (Apple Developer Connection, 2006-05-23) - http://developer.apple.com/documentation/Java/Conceptual/Java14Development/06-JavaVM/JavaVM.html#//apple_ref/doc/uid/TP40001903-211276-TPXREF107 - -[vm11] Java Virtual Machine Options (Apple Developer Connection, 2006-05-23) - http://developer.apple.com/documentation/Java/Conceptual/JavaPropVMInfoRef/Articles/JavaVirtualMachineOptions.html#//apple_ref/doc/uid/TP40001974-SW1 - -[vm12] Running your Java application on AIX, Part 2: JVM memory models (22 Oct 2003) - http://www-128.ibm.com/developerworks/aix/library/au-JavaPart2.html - -[vm13] Options in JVM profiles (IBM) - http://publib.boulder.ibm.com/infocenter/cicsts/v3r1/index.jsp?topic=/com.ibm.cics.ts31.doc/dfha2/dfha2jb.htm - - -Garbage Collection ------------------- - -[gc01] Tuning Garbage Collection with the 5.0 Java[tm] Virtual Machine - http://java.sun.com/docs/hotspot/gc5.0/gc_tuning_5.html - -[gc02] Tuning Garbage Collection with the 1.4.2 Java[tm] Virtual Machine - http://java.sun.com/docs/hotspot/gc1.4.2/ - -[gc03] Tuning Garbage Collection with the 1.3.1 Java[tm] Virtual Machine - http://java.sun.com/docs/hotspot/gc/ - -[gc04] Garbage Collector Ergonomics - http://java.sun.com/j2se/1.5.0/docs/guide/vm/gc-ergonomics.html - |