I think you could do as below, without using loadModel…..

                $this->paginate = array(
                        'conditions' => array(
                                'Post.user_id' => $userId
                        ),
                        'order' => array(
                                'Post.created' => 'ASC'
                        ),
                        'limit' => 100,
                        'maxLimit' => 100
                );
                $posts = $this->paginate($this->User->Post);
                $this->set(compact('posts'));

check the sql and print_r($posts) …  make sure to only pull data what you need, 
 use fields, recursive, contain….

Andras Kende
http://www.kende.com



On Jun 22, 2012, at 6:40 AM, JonStark wrote:

> Even when having relationships (hasMany and such) implemented, I feel the 
> need to user $this->loadModel to display related data. Indeed, when a User 
> has 450 posts, there is a need to limit the number of associated data 
> returned. But when I want to paginate all posts for a user profile, I use 
> $this->loadModel .
> 
> But my question is : does it have an inpact on general performance ?
> 
> Thanks for your answers/ experience.
> 
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