Controller Execution Time

Hi!

All my web pages rendering very slow performance even if the page has no content. All my pages rendering same performance. I'd tried to check profiler and here's the result.


I'd notice also that even the blank page execute all the database queries in all Model. How can i prevent to execute those queries. above is the result profiler gives in every pages.

here's my code in controller

Code:

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class User extends CI_Controller {
    public function __construct(){
        parent::__construct();

        $this->load->model('M_user');
        $this->load->model('M_global');
    }
    function notify()
    {
        echo $this->M_global->countWatchDog();
    }
    public function index()
    {

        $nodes_title = "Others";
        $nodes = $this->uri->segment(1).'/'.$this->uri->segment(2);
        $nodes = $this->M_user->subModuleNodes($nodes);
        $category = null;
        $data = array (
            "responsibility" => $category,
            "image_path" => $this->session->userdata('image_path'),
            "username" => $this->session->userdata('username'),
            "user_type" => $this->session->userdata('user_type'),
            "nodes" => $nodes,
            "nodes_title" => $nodes_title,
            "notification" => $this->M_user->usersNotification(),
            );
        $dataContent = array (

            );
        if (!$this->session->userdata('username')) {
            redirect(base_url().'login', 'refresh');
        }
        $this->load->view('header');
        $this->load->view('navigation',$data);
        $this->load->view('welcome_message',$dataContent);
        $this->load->view('footer');
    }

Please help me. Thank you in advance.