The CPU load depends upon the length of time a server spends executing a script any time a visitor opens a webpage on a particular script-driven site. Static HTML sites use barely any CPU time, but it is not the situation with the considerably more sophisticated and functional scripts, that use a database and display dynamic content. The more individuals open such an Internet site, the more load shall be generated on the server and if the database is large, the MySQL server shall be loaded as well. An example of what may cause high load is a web-based store with a huge number of products. If it is popular, a lot of people shall be exploring it at the same time and if they look for items, the entire database that contains all of the products shall also be frequently accessed by the script, resulting in high load. In this light, having CPU and MySQL load data will provide you with an idea of how the site is doing, if it has to be optimized or if you simply just need a more effective web hosting solution - if the website is popular and the established setup cannot cope with the load.