jboss服务器中jvm参数的设置:
在$JBOSS_HOME/bin下的run.sh里面存在这么一个设置:
# Force IPv4 on Linux systems since IPv6 doesn't work correctly with jdk5 and lower if [ "$linux" = "true" ]; then JAVA_OPTS="-Xms128m -Xmx512m -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000" fi
该参数就是设置java VM的参数。我们可以在这里修改这个参数;但更一般的我们会在run.conf里面单独设置java VM的参数,而在这边进行引用。
上面的可以做如下修改
# Force IPv4 on Linux systems since IPv6 doesn't work correctly with jdk5 and lower # if JAVA_OPTS is not setted in run.conf, setting here; by djq if [ "x$JAVA_OPTS" = "x" ]; then JAVA_OPTS="-Xms128m -Xmx512m -XX:PermSize=64m -XX:MaxPermSize=256m -XX:+HeapDumpOnOutOfMemoryError -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=36000" fi if [ "$linux" = "true" ]; then JAVA_OPTS="$JAVA_OPTS -Djava.net.preferIPv4Stack=true" fi
而我们需要可以在run.conf里面单独设置java VM的参数了。(一般情况下我们也不需要在run.sh里面做任何修改,只要在run.conf里面确保该有的参数都有了就ok了)。
附:
run.conf的一个设置:
## -*- shell-script -*- ###################################################### ## ## ## JBoss Bootstrap Script Configuration ## ## ## ############################################################################## ### $Id: run.conf 62747 2007-05-02 17:43:36Z [email protected] $ # # This file is optional; it may be removed if not needed. # # # Specify the maximum file descriptor limit, use "max" or "maximum" to use # the default, as queried by the system. # # Defaults to "maximum" # #MAX_FD="maximum" # # Specify the profiler configuration file to load. # # Default is to not load profiler configuration file. # #PROFILER="" # # Specify the location of the Java home directory. If set then $JAVA will # be defined to $JAVA_HOME/bin/java, else $JAVA will be "java". # #JAVA_HOME="/opt/java/jdk" #set JAVA_HOME here; by djq JAVA_HOME="/jboss/jdk1.5.0_22" # # Specify the exact Java VM executable to use. # #JAVA="" # # Specify options to pass to the Java VM. # #if [ "x$JAVA_OPTS" = "x" ]; then # JAVA_OPTS="-Xms128m -Xmx512m -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000" #fi # set options for the JVM; by djq if [ "x$JAVA_OPTS" = "x" ]; then JAVA_OPTS="-Xms1024m -Xmx6120m -XX:PermSize=128m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=36000" fi # Sample JPDA settings for remote socket debuging #JAVA_OPTS="$JAVA_OPTS -Xrunjdwp:transport=dt_socket,address=8787,server=y,suspend=n" # Sample JPDA settings for shared memory debugging #JAVA_OPTS="$JAVA_OPTS -Xrunjdwp:transport=dt_shmem,server=y,suspend=n,address=jboss"