id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
10952	Wordpress checks for core/plugin/theme upgrades upon every hit to [almost] any admin page	archon810		"This seems insane to me. Diagnosing performance issues, I'm digging through the code with a profiler and seeing calls to http.php, specifically WP_Http_Curl::request() function taking the longest time.

After adding a few prints into that function, I found that the Wordpress API is getting called upon every single page load, for example the Comments page, Posts, Settings, etc.

Here are the calls, with duration added at the end.
{{{
http://api.wordpress.org/core/version-check/1.3/?version=2.8.4&php=5.2.9&locale=en_US&mysql=5.0.67&local_package= 0.13813519477844s
http://api.wordpress.org/plugins/update-check/1.0/ 0.58831095695496s
http://api.wordpress.org/themes/update-check/1.0/ 0.34422087669373s

http://api.wordpress.org/core/version-check/1.3/?version=2.8.4&php=5.2.9&locale=en_US&mysql=5.0.67&local_package= 0.13466596603394s
http://api.wordpress.org/plugins/update-check/1.0/ 0.5711510181427s
http://api.wordpress.org/themes/update-check/1.0/ 0.35010981559753s

http://api.wordpress.org/core/version-check/1.3/?version=2.8.4&php=5.2.9&locale=en_US&mysql=5.0.67&local_package= 0.1392650604248s
http://api.wordpress.org/plugins/update-check/1.0/ 0.57304692268372s
http://api.wordpress.org/themes/update-check/1.0/ 0.41575598716736s
}}}

The crazy part here is that these 3 updates take over a second and are done EVERY SINGLE TIME, without any kind of rate limiting. I understand if they were done at most once an hour or only when the Plugins or Themes pages were hit, respectively but this is a huge overkill and performance monster.

Additionally, I don't understand why Wordpress.com would want that many more hits to the API - I'm sure somebody on the WP.com team had to have noticed this before.

The only relevant ticket I found is #8590.

The fix should be rate-limiting, IMO. Thoughts please."	defect (bug)	closed	normal		Performance	2.8.4	normal	invalid		admin@…