If you have an HTML Internet site, it likely uses a small amount of system resources because it's static, but this is not so with dynamic database-driven sites that use PHP scripts and provide you with far more capabilities. This sort of Internet sites produce load on the web hosting server every time anyone browses them, due to the fact that the hosting server requires time to execute the script, to access the database and then to deliver the data requested by the visitor's web browser. A well-known discussion board, for instance, stores all usernames and posts inside a database, so some load is generated every time a thread is opened or an end user looks for a certain name. If lots of people access the forum simultaneously, or if every search involves checking hundreds of thousands of database entries, this could produce high load and affect the efficiency of the site. In this regard, CPU and MySQL load data can give you information about the site’s performance, as you can compare the numbers with your traffic statistics to make a decision if the site should be optimized or transferred to a different type of hosting platform which will be able to bear the high system load in the event that the site is really popular.