On Tue, Jul 03, 2007 at 01:49:09PM +0200, Martin Toft wrote:
quoted text
> On Tue, Jul 03, 2007 at 04:32:13PM +1000, Jonathan Gray wrote:
> > Include the output of 'atactl wd0' perhaps you have something like
> > caching turned off.  Also you can't hope for similiar results if you
> > use different programs on both systems.
> 
> Disk I/O is the only test where I use different programs (hdparm and
> dd), as I couldn't find a port/package of hdparm for OpenBSD.  Still, I
> think the results are so different that they set of "alarm bells" --
> 8.5-8.7 MB/s vs. 45-46 MB/s.

Well at least use dd in both cases and use the same kinds of buffered
or unbuffered devices/files.

I imagine the results will be diferrent if you dd from a file to
/dev/null for example.