Whether to defer comment counting.
When setting $defer to true, all post comment counts will not be updated until $defer is set to false. When $defer is set to false, then all previously deferred updated post comment counts will then be automatically updated without having to call wp_update_comment_count() after.
<?php wp_defer_comment_counting( $defer ); ?>
Since: 2.5
wp_defer_comment_counting() is located in wp-includes/comment.php