I'm in the process of benchmarking my website.

class Home extends Controller {

    function Home() 
    {
        parent::Controller();
        $this->benchmark->mark('Constructor_start');

        $this->output->enable_profiler(TRUE);
        $this->load->library ('MasterPage');

        $this->benchmark->mark('Constructor_end');
    }

    function index() 
    {
        $this->benchmark->mark('Index_start');

        $this->masterpage->setMasterPage('master/home');
        $this->masterpage->addContent('home/index', 'page');
        $this->masterpage->show();

        $this->benchmark->mark('Index_start');
    }
}

These are the results:

Loading Time Base Classes: 0.0076
Constructor: 0.0007
Index: 0.0440
Controller Execution Time ( Home/ Index ): 0.4467
Total Execution Time: 0.4545`

I understand the following:

• Loading Time Base Classes (0.0076)
• Constructor (0.0007)
• Index (0.0440)

But where is the rest of the time coming from?