If you have an HTML Internet site, in all probability it uses a very small amount of resources due to the fact that it is static, but this is not the case with dynamic database-driven sites that use PHP scripts and offer way more functions. This sort of Internet sites produce load on the web hosting server anytime somebody browses them, as 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 famous discussion board, as an illustration, stores all usernames and posts in a database, so some load is created every single time a thread is opened or an end user looks for a specific term. If many people access the forum all at once, or if every single search involves checking a large number of database entries, this could generate high load and affect the functionality of the 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 stats and see if the Internet site should be optimized or migrated to a different kind of web hosting platform that'll be able to bear the high system load in the event that the website is popular.