CodeIgniter Used MEMORY by profiler

[eluser]pisio[/eluser]
Hey ! I have strange question.
Pro filer tells me

MEMORY USAGE
7,126,064 bytes

Is it possible ?
Is there any option to see what model / controller / lib how much memory used?
Because I think these 7 mb too much.
Also on the site is shared hosting, not VPS, it reflects you somehow these statistics?