I was working on a project which was randomly failing to load certain views outside the development environment. It turns out that the system was running out of memory. After searching some of the error messages output by the script, I stumbled upon the xhprof PHP module. It was originally created by Facebook, and released under an open source license.
Just by configuring your site and server in the right way, you can get much faster and responsive load times out of your CMS. With mainstream open source CMS software, you are given the ability to add bolt-on functionality. It’s common for each of these add-ons to provide their own set of CSS definitions, images and JavaScript. This makes these add-ons easy to implement for non-technical users. If you aren’t careful though, you will end up with tens or even hundreds of CSS and JavaScript files. This has a performance penalty, which can affect your rankings in the SERPs.
