Hi!
I'm using a jboss 4.2.0 server in a machine with theese features:
- RAM: 4 GB
- CPU: 2 processors ( Intel Xeon E5320 @ 1.86GHz)
- Operating system: Centos 5.5
- Java: jdk_1.6.0_03
- Jboss: 4.2.0_GA
The jvm parameters are:
-Xms128m -Xmx512m -Dsun.rmi.dgc.client.gcInterval=3600000
-Dsun.rmi.dgc.server.gcInterval=3600000 -Dcom.sun.management.jmxremote
If i use jconsole I can see that the memory is free almos every minute
althoug the heap is less than 80Mb used and nobody is using the only one
application deployed in server.
If I set the parameters:
-Xms512m -Xmx512m -Xmn150m -Dsun.rmi.dgc.client.gcInterval=3600000
-Dsun.rmi.dgc.server.gcInterval=3600000 -Dcom.sun.management.jmxremote
Memory is just free when the heap goes to 150Mb, so gc is called every 30
minutes more or less.
The question is, what parameters are good? The first ones or the second ones?
What aditional parameters can I use to get better performance and heap, jvm
tuning?
Thanks.
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