On Tue, Jul 03, 2007 at 01:49:09PM +0200, Martin Toft wrote: > 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.