When you run a webserver, which could be Apache, Nginx or Lighttpd, you may want to know how it is performing, actually, usually any web server can handle a normal day of work, but what happens when the server under your administration gets, stumbled, or appears in Slashdot, or digg front pages, now a days even twitter may drive a lot of traffic to a webpage. If that event occurs your server will be under real stress, and it is in that day when you want it to perform well, and survive the "attack". It is usually not possible to know how it will do that day, until the D. day arrives, but you can figure out how it will be. In this article you will find how to perform a simple test to have an idea of the health of your web server.