Subject: Re: UBC, interactive performance, etc
To: Jaromr <jdolecek@netbsd.org>
From: Chris Gilbert <chris@paradox.demon.co.uk>
List: tech-kern
Date: 04/03/2001 22:54:58
On Tuesday 03 April 2001 2:01 pm, "Jaromr" Dolecek wrote:
> I think there should be some minimal value of memory dedicated to
> buffer cache (i.e. what BUFCACHE/BUFPAGES does) and more memory
> would only be used if it's otherwise _unused at all_.
> Perhaps this might be an option, but such behaviour should be default IMHO.
I believe that HP-UX does something similair. It's got kernel parameters of
ubc_min and ubc_max. I think it's min of 20% and max of 50% by default, which
seems to work, but I've never benchmarked it.
Cheers,
Chris