If you have an HTML site, in all probability it uses a small amount of resources as it's static, but this isn't the situation with dynamic database-driven Internet sites that use PHP scripts and offer you far more capabilities. This sort of Internet sites produce load on the website hosting server anytime somebody browses them, since the web server requires time to execute the script, to access the database and then to deliver the data requested by the visitor's browser. A famous discussion board, for instance, stores all usernames and posts inside a database, so some load is generated each time a thread is opened or a user searches for a particular term. If many people access the forum all at once, or if every single search involves checking hundreds of thousands of database entries, this could produce high load and affect the functionality of the Internet site. In this regard, CPU and MySQL load data can give you info about the site’s efficiency, as you can compare the numbers with your traffic statistics to determine if the site has to be optimized or transferred to a new type of website hosting platform which will be able to bear the high system load if the Internet site is extremely popular.