linux-kernel - Re: -mm merge plans for 2.6.23

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Date:	Wed, 25 Jul 2007 09:09:01 -0700
From:	"Ray Lee" <ray-lk@...rabbit.org>
To:	"Nick Piggin" <nickpiggin@...oo.com.au>
Cc:	"Eric St-Laurent" <ericstl34@...patico.ca>,
	"Rene Herman" <rene.herman@...il.com>,
	"Jesper Juhl" <jesper.juhl@...il.com>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"ck list" <ck@....kolivas.org>, "Ingo Molnar" <mingo@...e.hu>,
	"Paul Jackson" <pj@....com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: -mm merge plans for 2.6.23

Hey Eric,

On 7/24/07, Nick Piggin <nickpiggin@...oo.com.au> wrote:
> Eric St-Laurent wrote:
> > On Wed, 2007-25-07 at 06:55 +0200, Rene Herman wrote:
> >
> >
> >>It certainly doesn't run for me ever. Always kind of a "that's not the
> >>point" comment but I just keep wondering whenever I see anyone complain
> >>about updatedb why the _hell_ they are running it in the first place. If
> >>anyone who never uses "locate" for anything simply disable updatedb, the
> >>problem will for a large part be solved.
> >>
> >>This not just meant as a cheap comment; while I can think of a few similar
> >>loads even on the desktop (scanning a browser cache, a media player indexing
> >>a large amount of media files, ...) I've never heard of problems _other_
> >>than updatedb. So just junk that crap and be happy.
> >
> >
> >>From my POV there's two different problems discussed recently:
> >
> > - updatedb type of workloads that add tons of inodes and dentries in the
> > slab caches which of course use the pagecache.
> >
> > - streaming large files (read or copying) that fill the pagecache with
> > useless used-once data

No, there's a third case which I find the most annoying. I have
multiple working sets, the sum of which won't fit into RAM. When I
finish one, the kernel had time to preemptively swap back in the
other, and yet it didn't. So, I sit around, twiddling my thumbs,
waiting for my music player to come back to life, or thunderbird,
or...
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