Re: piixide write speed very slow

[Stephen Borrill <netbsd%precedence.co.uk@localhost>]

On Wed, 9 Dec 2009, David Young wrote:
> On Fri, Dec 04, 2009 at 02:35:09PM +0000, Stephen Borrill wrote:
> > I've seen a couple of boxes recently where writing to a
> > piixide-attached disk was excruciatingly slow:
> >
> >               -------Sequential Output-------- ---Sequential Input-- --Random--
> >               -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
> > Machine    MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU  /sec %CPU
> >          4096  4268  3.1  4264  0.5  3994  0.6 92913 72.1 112090 11.4 1957.4  
> > 3.7
>
> What bonnie++ command line gave you these numbers?

This is regular bonnie, not bonnie++. I used bonnie -s 4096 (2GB of RAM in 
this box). The speeds are confirmed by using:
dd if=/dev/zero of=out bs=1m

--
Stephen