as much crap as I see posted about admin-ajax (almost made posts about it myself), I dont see how they havent said something about this.
Unlikely, as it’s used heavily by many plugins to get access safely to WP functions.
I have seen pingdom reports that show admin-ajax.php taking up loads of speed to load the front end of the site by pingdom when I am in admin.
I agree. It is wreaking havoc. I have a site on a dedicated server and from the console there are tons of admin-ajax causing high CPU and memory consumption.
Andrew Nevins
(@anevins)
WCLDN 2018 Contributor | Volunteer support
@webgirl, With all plugins deactivated and the default Twenty Fourteen theme active?
If admin-ajax is getting hammered, you either are under a DDoS (which please get a firewall on that dedi!) or you have some bad code making too many calls.
The alternative to admin-ajax is people directly calling your wp-config/wp-load/wp-blog-header files, which we don’t permit.