How to one click view all comments on post (WordPress Admin)?

What needs to be changed so that comments are loaded not in 10 pieces, but all comments once. If there are a lot of them, then many times necessary to push link to "show more comments".

Code from here

<p class="hide-if-no-js" id="show-comments"><a href="#commentstatusdiv" onclick="commentsBox.load(<?php echo $  total; ?>);return false;"><?php _e( 'Show comments' ); ?></a> <span class="spinner"></span></p> 

Sorry for my English