Since I got the crazy idea to radically change this website engine, from Windows+mojoPortal to Linux+PHP, I noticed that I need a LOT of more CPU time to generate each page:
It uses a lot of processor time, but requests are much more faster… if the page has been “cached”:
In my experiments I saw that the forum that I was using (bbpress) slows down the site a lot: it loads a lot of useless javascript in all pages, and doesn’t allow “caching” the pages. So I temporarily disabled the forum, searching for a temporary solution. I’m thinking to use Discourse