Which java webframework for high performance and scalability

Question

I have to design a java based web application, it should support be highly scalable, should support almost 500 concurrent users with response time less than 3 secs. I have short listed 5 frameworks(Struts, Spring MVC, JSF, Wicket and GWT). My questions are:

1.I want to compare the performance of these framworks similar to the way it described in below
(this is between JSF and Wicket). Are there any resources for other frameworks? http://ptrthomas.wordpress.com/2009/01/14/seam-jsf-vs-wicket-performance-comparison/

2.Apart from above mentioned frameworks, are there any framweworks I should consider?

Answer 1

@goutham you have missed out "HybridJava". As of presentation layer itself (and this technology is about presentation layer only) it gives about 1 ms CPU per page.