On Tue, Mar 21, 2006 at 07:25:07AM -0800, Luke Lonergan wrote: > Jim, > > On 3/21/06 3:49 AM, "Jim C. Nasby" <jnasby@xxxxxxxxxxxxx> wrote: > > > No, I don't know why the transfer rates for the mirror are 1/2 that as the raw > > device. :( > > Well - lessee. Would those drives be attached to a Silicon Image (SII) SATA > controller? A Highpoint? > > I found in testing about 2 years ago that under Linux (looks like you're > BSD), most SATA controllers other than the Intel PIIX are horribly broken > from a performance standpoint, probably due to bad drivers but I'm not sure. > > Now I think whatever is commonly used by Nforce 4 implementations seems to > work ok, but we don't count on them for RAID configurations yet. atapci1: <nVidia nForce4 SATA150 controller> And note that this is using FreeBSD gmirror, not the built-in raid controller. -- Jim C. Nasby, Sr. Engineering Consultant jnasby@xxxxxxxxxxxxx Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
