I needed to make some changes to the website layout this afternoon, so I turned off WP-Super-Cache for a while. As you can clearly see in the following graph the CPU time consumed by php-cgi processes increased by 2-4 times when caching was turned off between 14:00-17:00. And this increase was caused by a single WordPress installation during low traffic hours.
This is one of the many reasons I love caching plugins.
CPU Time saved by WP-Super-Cache by George Notaras is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
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Wp-Super-Cache is indeed a great plugin. I decided to remove it from my wordpress blog and simple went with eaccelerator. My server loads sitting way down near 1… I do have a powerful xeon machine so that helps too :)