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

--- Comment #18 from Gabriel Wicke <gwi...@wikimedia.org> ---
(In reply to comment #15)
> I think it's actually the OFFSET clause (in this case, the first element of
> the
> LIMIT tuple) which is slowing things down.  There isn't an effective index
> that
> can quickly give you the "86786th article after
> Centennial_Trail_State_Park". 
> So instead it's sequentially scanning through 86,786 entries 

Yeah, that's 1/100 of 8.6 million pages. Very close to the nine million rows
from the original report.

> (and the offset grows the further you go).

Are we sure that this is the case? My reading of the code suggests that it
remains constant per wiki.

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