what actually is JAVA_OPTS?

hi guys,

I am using jboss4 and i am wondering what actually is the below :

JAVA_OPTS="-Xms256m -Xmx512m -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000"

will it increase JVM performance? if I have 1GB of RAM in server and this server only running jboss4, how should I configure it?

Please advice.

Thanks & Regards,

Mark

[423 byte] By [kmthiena] at [2007-11-27 1:59:44]
# 1
There is some interesting info here; http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6200091
tschodta at 2007-7-12 1:37:47 > top of Java-index,Java HotSpot Virtual Machine,Specifications...
# 2
so does it increase application server performance?the greater the value the better the performance?
kmthiena at 2007-7-12 1:37:47 > top of Java-index,Java HotSpot Virtual Machine,Specifications...
# 3

> so does it increase application server

> performance?the greater the value the better the

> performance?

What you posted is a collections of arguments that is passed to the VM.

It isn't just one.

As to whether it or some other might increase performance that depends on the specific details of your application(s) which are running using it.

jschella at 2007-7-12 1:37:47 > top of Java-index,Java HotSpot Virtual Machine,Specifications...
# 4
> so does it increase application server performance?> the greater the value the better the performance?How thorough did you read the link I posted?How long did you spend contemplating the implications of what it said?
tschodta at 2007-7-12 1:37:47 > top of Java-index,Java HotSpot Virtual Machine,Specifications...