Fixed in r29647.

You could increase the global request rate for Special:Version by 50 times, and you'd still use less server CPU time than this feature. SpecialVersion::getVersion() is too slow to be calling on every request. I'll have to revert this. Use api.php?action=query&meta=siteinfo if you want to be server-friendly.

rotemliss wrote:

Why is this function so slow? If the problem is getSvnRevision, could $wgVersion be used for this variable instead of calling SpecialVersion::getVersion?

Mostly getSvnRevision(). Also, on systems without a bytecode cache, loading SpecialVersion.php will be slow. Using $wgVersion would be fine.

Well, we can hardcore version inside GlobalSettings.php and then use it instead of calling getVersion().

s/hardcore/hardcode/g;

rotemliss wrote:

(In reply to comment #5)

Well, we can hardcore version inside GlobalSettings.php and then use it instead
of calling getVersion().

We already do so (in DefaultSettings.php), this is $wgVersion. The version is hardcoded there, but not the SVN revision. (BTW, couldn't SVN properties be used to get SVN revision, instead of the file .svn/entries?)

Let's use $wgVersion then. SVN revision is not needed at all - bots are usually written for stable versions of MediaWiki, and in most cases bots will work with stable versions only.

Fixed in r29757