I have a large site that's using WordPress. We have 75,000 pages in the site so far, and it's performing well on the front-end.
The issue is that if anyone on our team touches the page editor (wp-admin/edit.php?post_type=page), Apache eats up all the memory on the server.
I've tried disabling all plugins, but that didn't work. I also tried debugging on our live server which a 4GB box... it still eats up all the memory and comes to a hault.
On this install, we also have 20,000 posts. There's no issue loading those in wp-admin. Maybe we should move all pages to posts - that's going to cause an issue with permalink structure, though.
Are there special settings or configurations I'm missing for a large WP site?