Is CI's Autoload Mechanism Good Enough?

[eluser]WoOzY KinG[/eluser]
Hey every CI lover (like me),

I just read this blog post at CodeFeast: http://codefeast.com/?p=11.
The article points out some important things about autoloading and its performance.

So I started to wonder how does CI implement its autoload functionality and is it good enough?

Any CI guru could explain a bit? Thanks in advance