[Zope] how to stress test a zope site?

All, Is there a way that I can run a stress test on a Zope site running ZServer? I am trying to do some capacity planning and trying to determine how the sustained hit count before performance starts degrading. Any suggestions and thoughts will be appreciated. Thanks Demos __________________________________________________ Do You Yahoo!? Get Yahoo! Mail � Free email you can access from anywhere! http://mail.yahoo.com/