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filter is not described

comments_per_page filter-hook . WP 2.6.0

Filters the number of comments listed per page in the comments list table.

Usage

add_filter( 'comments_per_page', 'filter_function_name_6501', 10, 2 );
function filter_function_name_6501( $comments_per_page, $comment_status ){
	// filter...

	return $comments_per_page;
}
$comments_per_page(int)
The number of comments to list per page.
$comment_status(string)
The comment status name.
Default: 'All'

Where the hook is called

WP_Comments_List_Table::get_per_page()
WP_Screen::render_per_page_options()
wp-admin/includes/class-wp-comments-list-table.php 175
return apply_filters( 'comments_per_page', $comments_per_page, $comment_status );
wp-admin/includes/class-wp-screen.php 1173
$per_page = apply_filters( 'comments_per_page', $per_page, $comment_status );

Where the hook is used (in WP core)

Does not used.