look at the cvs dir ECPerf from the jboss sourceforge projekt.
also usefull:
http://www.cmis.csiro.au/adsat/JBossECPerfREADME.htm
there are also a kit...
Sascha
Hey:
ECperf is a std benchmark by SUN for J2EE container eveluation. You might wanna try that.
Cheers,
Atul