If you have an HTML Internet site, it likely uses a small amount of resources as it is static, but that isn't the case with dynamic database-driven websites that use PHP scripts and offer you much more features. This type of websites create load on the web hosting server each time anyone browses them, since the hosting server needs time to execute the script, to access the database and then to supply the information requested by the visitor's web browser. A well known discussion board, as an illustration, stores all usernames and posts inside a database, so some load is created each time a thread is opened or a user searches for a given phrase. If many people access the forum concurrently, or if each and every search involves checking thousands of database entries, this can generate high load and affect the functionality of the Internet site. In this regard, CPU and MySQL load data can give you data about the site’s efficiency, as you can compare the numbers with your traffic data to determine if the site should be optimized or transferred to a new type of hosting platform which will be able to bear the high system load if the site is really popular.