By simulating the HTTP requests generated by hundreds or even thousands of simultaneous users, you can test your web server performance under normal and excessive loads to ensure that critical information and services are available at speeds your end-users expect.
Detailed test logs and several easy to read graphs make analyzing results a snap. Webserver Stress Tool for Windows (XP/2003/Vista/7/2008) can benchmark almost any HTTP server (e.g. static pages, JSPs/ASPs, or CGIs) for performance, load, and stress-tests.