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

--- Comment #21 from Gabriel Wicke <gwi...@wikimedia.org> ---
(In reply to comment #19)
> (In reply to comment #18)
> > (In reply to comment #15)
> > > (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.
> 
> Re-reading, you're right.  Still O(N^3) to fetch all titles from a wiki with
> N
> titles because the offset, although constant, is O(N).  O(N) 'pages' * O(N)
> 'queries per page' * O(N) 'rows touched per query due to the offset'.

O(N/100) (titles per section) times 100 (sections) is still O(N), so O(N^2)
total. Note that the number of sections is constant, not O(N).

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