IBM eServer 346 ServeRaid is too slow

[Brian Behlendorf]

On Thu, 7 Apr 2005, Carl Makin wrote:
> I'd say you are seeing the same as I am with the same card in a Dell 1855. 
> There is something wrong with the mpt driver and the disks when they are 
> setup in a raid0 set.  If you split the disks and use them as individual 
> drives then you will get full performance.

It's also a known problem, though not being tracked very well.

http://lists.freebsd.org/pipermail/freebsd-scsi/2004-December/001577.html
http://lists.freebsd.org/pipermail/freebsd-scsi/2004-December/001578.html

Doesn't look like (from viewcvs.cgi) there's been any recent work on 
this.

 	Brian