Yii: How to disable CGridview sorting

In our application development, sometimes we want to disable CGridview sorting for performance issue.

$this->widget('zii.widgets.CGridView', array(
        ......
        'enableSorting' => false,
        ......
    )
);

This configuration also applies to CListView. The enableSorting property is defined in parent class of CGridView or CListView.

‘enableSorting’ => false,