Date: Fri, 27 Oct 2006 19:53:58 -0600 From: Scott Long <scottl@samsco.org> To: AT Matik <asstec@matik.com.br> Cc: freebsd-scsi@freebsd.org, "Kenneth D. Merry" <ken@kdm.org> Subject: Re: Why is SCSI so much faster with the write cache off (than ATA)? Message-ID: <4542B836.8090304@samsco.org> In-Reply-To: <200610271925.37069.asstec@matik.com.br> References: <20061027214011.GB86642@cons.org> <20061027220450.GA78909@nargothrond.kdm.org> <200610271925.37069.asstec@matik.com.br>
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AT Matik wrote: > On Friday 27 October 2006 19:04, Kenneth D. Merry wrote: >> work well. Is tagged queueing enabled on the ATA disks you're testing? Is >> it the old-style queueing or NCQ? > > > hi > > since it seems you're into this can you give further info how NCQ is related > to the OS? how we can manage NCQ on OS level? > > Joćo > > FreeBSD doesn't support either form of ATA/SATA tagged queueing, yet. Scott
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