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Summary:

PHP by itself, uses about 256 KB just to spin up and process “hello world”.
FatFree (http://fatfree.sourceforge.net/), a lightweight framework uses just 1MB-3MB to process a basic page. This framework has a lot of potential. It does not taste like the other fat free products I’ve tried.
Symfony 1.0x (http://www.symfony-project.org/), is using 8-14MB per page request, depending on how complex the page is. My basic testing of Symfony1.4 with a smaller test application showed similar results (7-9MB locally).
WordPress weighs in between 21MB and 33MB depending on how many plug-ins are running.
WordPress 3.1 with minimal plug-ins and Platform theme (this blog) = 23.0 MB
WordPress 3.1 with minimal plug-ins and custom lightweight theme (friend’s blog) = 20.8 MB
WordPress 3.1 with plug-ins disabled and Platform theme (this blog) = 21.0 MB
WordPress 3.1 with many plug-ins = 32.7 MB
Drupal gets the heavyweight belt coming in between 37.5MB and 76MB!
Drupal 6 with a BUNCH of modules = 76MB
Drupal 5 with a more limited collection of modules = 37.5MB
Drupal 6 with a limited collection of modules = 43MB

~more @source
http://www.laurencegellert.com/2011/06/m...frameworks

Drupal is a beast. If you want a CMS that just gets the job done, go for WolfCMS (PHP) or Refinery (Rails).

Looking at WolfCMS now, thanks.

(2012-12-08, 11:57 AM)seeker Wrote: [ -> ]Looking at WolfCMS now, thanks.

I vouche here as well, it's an awesome, functional lightweight minimum cms which will do what you want.
People like Joomla or Drupal could learn from it.