Slower JBOSS 4

[vichandoko]

Hi,

I've just started using JBOSS 4 (v. 4.0.4), previously using 3.2.1
However, JBOSS 4 feels slower than its older predecessor.

My same servlet takes longer time to output. And even server takes longer time to start. During deployment it took a while for server to "realise" that the jar/war has been placed into the deploy directory. And deployment of the same war & jar takes longer time than using 3.2.1

Is there any configuration that am doing wrong?
I am starting JBOSS with following param:
-XrunpiAgent:server=enabled -Xms128m -Xmx1024m -XX:MaxPermSize=128M -Djboss.partition.name=NewPartition

Thanks.

Veny

[jerrynolan]

Have you had any luck in your research?

We ourselves took a big performance hit when we upgraded to 4.x, although we made several new deployments at the same time that could be part of our decreased performance too.

Here are a couple of links you might have already seen - if not, they are helpful.

A JBossian blog posting on rmi gcinterval and also stack size:
http://blogs.jboss.com/blog/acoliver/2006/03/21/If_you_dont_do_this_JBoss_will_run_really_slowly.txt

Sun's JBoss On Solaris Best Practices
http://www.sun.com/servers/coolthreads/tnb/applications_jboss.jsp

Here's an extensive article on slimming your jboss installation. It starts with tuning tips
http://wiki.jboss.org/wiki/Wiki.jsp?page=JBossASTuningSliming

And you probably know this one too, but just in case:
http://java.sun.com/docs/performance/

Along with this:
http://java.sun.com/docs/hotspot/gc5.0/gc_tuning_5.html

If you haven't yet already, check out
http://java.sun.com/j2se/1.5.0/docs/tooldocs/share/jstat.html#gcutil_option
I use that on production boxes instead of verbosegc

And jmap with the -heap option is awesome. The -histo option is pretty cool too.