If you have an HTML site, it probably uses a really small amount of resources simply because it is static, but that isn't the situation with dynamic database-driven sites that use PHP scripts and provide considerably more functions. This sort of websites create load on the hosting server every time someone browses them, because the server requires time to execute the script, to access the database and then to deliver the content 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 each time a thread is opened or an end user looks for a certain name. If many people connect to the forum all at once, or if each search involves checking thousands of database entries, this can generate high load and affect the overall performance of the Internet site. In this regard, CPU and MySQL load data can provide you with data about the site’s functionality, as you can compare the numbers with your traffic stats to make a decision if the Internet site must be optimized or migrated to another kind of web hosting platform which will be able to bear the high system load in the event that the Internet site is very popular.