performance issue in comments_template() pagination

[fullo]

in wp-includes/comment-template.php function comments_template() line 889 are not passed the optional parameters "number" and "offset" if pagination is enabled for comments.

This means that if I have a post with a lot of comments (ie. 1000) all of them will be loaded from the db causing a slow query.

This is usually fixed using a caching plugin, but not all the installations come with it installed or enabled.

[ryan]

See #8071