Page Render Times and Memory Allocation

[eluser]Vince Stross[/eluser]
I'm working on a CMS-type solution for a customer and I'm looking for opinions from others on how long it's taking for my pages to load and the amount of memory being used for each page load. Does anyone have a good idea what an average would be?

Right now I'm averaging .05 seconds for page rendering but I'm using as much as 2.6MB server memory for each page. This might be well within reason but I'm not sure. This application will be hosting 15 separate sites on one code base and they will be hit hard.

This is a redesign project and their existing sites are seeing thousands of requests a day. All of these sites will be on the same server and with each page load using 2.6MB of memory I want to be sure that I don't need to find ways of doing some things differently.

Thoughts anyone?