Ajax performance question

[eluser]hykoh[/eluser]
I think it would recommended to create a special .php file with only special handlers for incoming POST, isnt it ?

If CI get loaded everytime a ajax call get sent, the load goes raise unnecessary up ?

So i think $.post('/my/dir/to/some/ajaxHandler/example.php with just a few needed function is better instead of $.post('/controller/ajaxMethod');

Please post your experience =)