If you have an HTML Internet site, it probably uses a very small amount of system resources because it's static, but that isn't the case with dynamic database-driven websites that use PHP scripts and provide far more functions. Such Internet sites generate load on the hosting server each time somebody browses them, as the server needs time to execute the script, to access the database and then to provide the content requested by the visitor's browser. A widely used discussion board, for example, stores all usernames and posts inside a database, so some load is generated any time a thread is opened or an end user searches for a particular word. If a lot of people connect to the forum concurrently, or if each search involves checking a large number of database entries, this can produce high load and affect the efficiency of the Internet site. In this regard, CPU and MySQL load stats can provide you with data about the site’s functionality, as you can compare the numbers with your traffic statistics to decide if the site should be optimized or migrated to a different sort of website hosting platform that will be able to bear the high system load in the event that the Internet site is really popular.