title: Testing How Code Scales
body: <p>I am currently working on some Ajax heavy code and I am wondering how my server will scale as more and more users (hopefully) start to use my web app.  It is only on my internal test server for the moment and I was wondering how I would go about simulating a few hundred or thousand users so that I can see how it handles a heavier load.  It is written in PHP/MySQL and I really didn't want to find hundreds of computers to set up and test manually :)  Thanks in advance, any advice or direction is much appreciated.</p>