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Re: piixide write speed very slow

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  

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


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