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From: Kai.Grossjohann@CS.Uni-Dortmund.DE
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Subject: Re: Holes in article sequence
Date: 09 Jul 1999 19:11:09 +0200
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Lars Magne Ingebrigtsen <larsi@gnus.org> writes:

> Hrvoje Niksic <hniksic@srce.hr> writes:
> 
> > Now, if you have a big hole in your article range -- e.g. your article
> > range is 128 - 12300 because you ticked article no. 128 -- total
> > expiry will stat tens of thousands of non-existant files every time 
> > you leave the group.  That tends to get a bit slow.
> 
> One could speed things up by having the backend look at what articles
> exist in the group, and then iterate over that instead of the other
> way around.  That would be much, much quicker for groups with big
> "holes" in them.  It might be slower in other situations, though.

What about having the backend look for the articles actually in the
group, and then intersecting this set with the set of
potentially-to-be-expired articles, then only iterating over that
intersection?

kai
-- 
Life is hard and then you die.