https://bugzilla.wikimedia.org/show_bug.cgi?id=56840

--- Comment #17 from Tim Starling <[email protected]> ---
(In reply to comment #16)
> I'm curious how this seemingly suddenly became a problem. Was this is a
> MariaDB
> performance regression?

See the original report:

> My best guess is that some third-party crawler is trying to obtain the titles
> of all articles by paging through Special:Allpages --- and, as we found out
> the
> hard way --- generating the list that was is O(N^3) where N is how many pages
> into the list you are.

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