Re: -mm merge plans for 2.6.23

From: Ray Lee
Date: Wed Jul 25 2007 - 12:09:21 EST


Hey Eric,

On 7/24/07, Nick Piggin <nickpiggin@xxxxxxxxxxxx> 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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