If you have an HTML site, most likely it uses a really small amount of resources simply because it is static, but this is not the case with dynamic database-driven websites that use PHP scripts and offer far more capabilities. This sort of Internet sites produce load on the hosting server every time someone browses them, simply because the 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 produced every single time a thread is opened or a user looks for a certain term. If many people connect to the forum all at once, or if each search involves checking a large number of database entries, this may generate high load and affect the efficiency of the Internet site. In this regard, CPU and MySQL load statistics can provide info about the site’s efficiency, as you can compare the numbers with your traffic statistics to decide if the Internet site has to be optimized or migrated to another sort of hosting platform that will be able to bear the high system load in case the Internet site is popular.