troubleshooting Question

Wordpress - Extremely Slow on Large Site - get_page_children Function Responsible

Avatar of drgdrg
drgdrg asked on
PHPWordPress
1 Comment1 Solution949 ViewsLast Modified:
I'm converting a large information site from HTML to Wordpress.  There are over 10,000 pages of content.  On some themes the site crawls, on basic themes like TWENTY TWELVE it flies.

What I have isolated is a function function in post.php that is causing the slow down.  

/**

COMMENTED OUT BY ME

function get_page_children($page_id, $pages) {
     $page_list = array();
     foreach ( (array) $pages as $page ) {
          if ( $page->post_parent == $page_id ) {
               $page_list[] = $page;
               if ( $children = get_page_children($page->ID, $pages) )
                    $page_list = array_merge($page_list, $children);
          }
     }
     return $page_list;
}
*/

/**
Added by ME
*/

function get_page_children($page_id, $pages) {
     $page_list = array();
     return $page_list;
}

Basically, it seemed to be doing a tremendous number of recursive searches over 10,000+ pages looking for matches.

Is there a more efficient way to do this with a SQL query and, if yes, what would you do?

This has been a temporary fix.... the site is now flying.  The Parent / Child plugins we use do not make use of this function.

The only thing I've seen it break is:

http://www.XXXXXXXXXXXXXXX.com/wp-admin/edit.php?post_type=page

This would list all pages on the site that we could edit, albeit at 20 pages per screen.

Other than that, is this a problem?  Is there a better way to do it?  I know sites this size are unusual but should not be impossible.  

I know this is well established code in WP, but it cannot be the most efficient way of handling things when dealing with a large site.

Finally, is there any way for me to take whatever function is recommended and make it a child theme / function / something that "takes priority" over the one built into post.php?

I can edit post.php but if we do a WP update, it will wipe the change.  I'm wondering if you can have priority functions, the way you would take precedence in CSS.

Thanks!
ASKER CERTIFIED SOLUTION
Jason C. Levine
Don't talk to me.

Our community of experts have been thoroughly vetted for their expertise and industry experience.

Join our community to see this answer!
Unlock 1 Answer and 1 Comment.
Start Free Trial
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 1 Answer and 1 Comment.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros