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Re: removing an ext2fs file forces disk activity
From: |
Adam Olsen |
Subject: |
Re: removing an ext2fs file forces disk activity |
Date: |
Mon, 25 Mar 2002 15:35:22 +0000 |
User-agent: |
Mutt/1.3.28i |
On Mon, Mar 25, 2002 at 10:23:25AM -0500, Marcus Brinkmann wrote:
> On Mon, Mar 25, 2002 at 04:18:05PM +0100, Philip Dodd wrote:
> > One of the things I first noticed when running the Hurd (particularly
> > because it was running with an old and very noisy HD) was the incredible
> > amount of disk activity compared with exactly the same box running any other
> > OS. This is of course an entirely subjective expression of opinion, and
> > should of course be taken as such :)
> >
>
> Well, of course we know about this problem in general. And trust me
> that it has been worse two years ago :) Linux has a very superb
> caching for the filesystem, while we have no equivalent caching (we just
> have the pager). However, I was wondering about whether this particular
> sequence of commands requires disk activity. Maybe it's just a bug
> somewhere that can be fixed.
>
> Implementing a proper caching strategy would be a very good task, but it
> is not easy.
I think we should go for a 'good enough' caching strategy, rather than
an 'optimal' caching strategy. Simply caching 4 megs of the
most-recently-used pages would probably increase peformance
dramatically for most tasks, and I doubt it'd harm any others (unless
it doesn't leave enough memory free to satisfy the pager.)
--
Adam Olsen, aka Rhamphoryncus
- removing an ext2fs file forces disk activity, Marcus Brinkmann, 2002/03/25
- Re: removing an ext2fs file forces disk activity, Thomas Bushnell, BSG, 2002/03/25
- Re: removing an ext2fs file forces disk activity, Jeroen Dekkers, 2002/03/25
- Re: removing an ext2fs file forces disk activity, Ludovic Courtès, 2002/03/26
- Re: removing an ext2fs file forces disk activity, Thomas Bushnell, BSG, 2002/03/26
- Re: removing an ext2fs file forces disk activity, Niels Möller, 2002/03/26
- Re: removing an ext2fs file forces disk activity, Thomas Bushnell, BSG, 2002/03/26
- Re: removing an ext2fs file forces disk activity, Niels Möller, 2002/03/26