Yii run Faster in localhost

Hi all,
I found this little trick to run faster your yiisite's debug in localhost.
It works well in my mysql-based app (Win 8, XAMPP 1.8.1, hosts file ok):


'connectionString' => 'mysql:host=localhost;dbname=university', //SLOW (average execution time: 1.13s)

'connectionString' => 'mysql:host=127.0.0.1;dbname=university', //FAST (average execution time: 0.07s)