[eluser]dawnerd[/eluser]
[quote author="elvix" date="1237841980"]i'm not sure what you're asking is even possible. CI's index.php is the only actual public file that exists.
i'd suggest that perhaps you're looking for a solution in advance of an actual problem, and you should probably just proceed and built the site you want, irrespective of any potential performance concerns.[/quote]
I have to disagree there.
You should always have performance in mind when building a site. Saying it woke be a problem just because your site is small for the moment can have major problems down the road. What would happen if your sir started to grow at a very rapid rate? Suddenly you get problems you never thought you would have.
I think it's better to address the performance issues the best you can right away rather than putting it off.