Re: 2.4.8-pre7: still buffer cache problems

[Zdenek Kabelac]

Rik van Riel wrote:
> 
> On Thu, 9 Aug 2001, marc heckmann wrote:
> 
> > While 2.4.8-pre7 definitely fixes the "dd if=/dev/zero
> > of=bigfile bs=1000k count=bignumber" case. The "dd if=/dev/hda
> > of=/dev/null" is still quite broken for me.
> 
> OK, there is no obvious way to do do drop-behind on
> buffer cache pages, but I think we can use a quick
> hack to make the system behave well under the presence

There is one simple way - leave some configurable number of
maximum cachable pages.

I've been having this problem for very looooong time -
and even this simple trick - like saying that disk cache could not
take more than 40MB would help a lot.

kabi