Tools for Stress Testing Websites?
rickindy asks: "What do you usedfor web site load testing tools? Open source or commercial is fine, but my employer it hosting a boatload of sites, and we would like to find the breaking point for the server at some time other than 3:00am."
... is to place a link to the page on the Slashdot frontpage. It's opensource too!
I think this link can be helpful for you, it provides a huge list of web test tools. They are organized in categories for which sort of test one would like to perform. They also have a FAQ which answers several questions about how sites can be tested, and it also points out what things you should think about, like; what are the expected loads, who is the target audience, what kind of performance is expected on the client side, and so on.
2 reptiles beneath your current threshold.