If you have an HTML website, in all probability it uses a small amount of resources as it is static, but that isn't so with dynamic database-driven Internet sites that use PHP scripts and provide much more features. This kind of sites create load on the hosting server when anyone browses them, simply because the hosting server requires time to execute the script, to access the database and then to supply the information requested by the visitor's Internet browser. A well known discussion board, for example, stores all usernames and posts within a database, so some load is created every single time a thread is opened or a user searches for a specific name. If lots of people connect to the forum all at once, or if every single search involves checking tens of thousands of database entries, this can generate high load and affect the performance of the site. In this regard, CPU and MySQL load data can present you with data about the site’s functionality, as you can compare the numbers with your traffic statistics to make a decision if the Internet site has to be optimized or moved to a different sort of hosting platform that'll be able to bear the high system load if the site is popular.