"shane.bryzak(a)jboss.com" wrote : I've been doing some profiling during session initialisation of a Seam application and a large chunk of time is spent in org.jboss.virtual.plugins.context.zip.ZipEntrycontext.initEntries(). This method is invoked 480 times, for a total cpu time of 161 seconds. I think someone needs to review this method to see if it can be optimised somehow. Looks like Seam is doing most of the resource lookup work based on URLs. And with no URL/VFS/resource/etc caching, VFS needs to re-create the whole structure over and over again, hence unpacking nested stuff, re-initializing it on every unpack. This should go away with better Seam+MC+AS integration. But yeah, meanwhile I'll have a look what can be done. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4183414#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...