Re: cp file /dev/zero <-> cache [was Re: increasing page size]

[Rik van Riel <H.H.vanRiel@phys.uu.nl>]

On Wed, 8 Jul 1998, Andrea Arcangeli wrote:
> On Wed, 8 Jul 1998, Stephen C. Tweedie wrote:
> 
> >I'm unconvinced.  It's pretty clear that the underlying problem is that
> >the cache is far too agressive when you are copying large amounts of
> >data around.  The fact that interactive performance is bad suggests not
> >that the swapping algorithm is making bad decisions, but that it is
> >being forced to work with far too little physical memory due to the
> >cache size.

This morning I have posted a patch to Linux MM which can
drastically improve this situation.

For the low-mem linux-kernel users, you can get the patch
from my homepage too.

Rik.
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| Linux memory management tour guide.        H.H.vanRiel@phys.uu.nl |
| Scouting Vries cubscout leader.      http://www.phys.uu.nl/~riel/ |
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