[eluser]Joozt[/eluser]
Thanks for all the replies

!!!
Now it is time to but it all to the task.
Since the project I am working on is very big, I will put it all to the test.
I will start writing the code and use some scripts to to the requests on various pages and compare the requests per second with baseline PHP and CondeIgnitor (I assume ofcouse that codeIgnitor will be slower, but even so It might not even be noticeble for overal performance)
I will post the code and the results here.
[quote author="Xeoncross" date="1218069362"]
With a couple core hacks you can disable some of the more useless stuff like URI routing and things if this is just a hidden request thing from a desktop.[/quote]
I started to review the codeIgnitor framework code a bit, but I am not sure what I can strip out to boost performance, does anyone have any suggestions what I can strip.
reading up on the functional plan of the project (I still need to write a technical design) It seems I that for the most part the software will consist of mainly database queries and returning plane text or XML to the client application (might use XML-RPC and XML-RPC Server Classes).