From owner-freebsd-scsi Fri Mar 29 7:11:29 2002 Delivered-To: freebsd-scsi@freebsd.org Received: from panzer.kdm.org (panzer.kdm.org [216.160.178.169]) by hub.freebsd.org (Postfix) with ESMTP id EE2C937B419 for ; Fri, 29 Mar 2002 07:11:24 -0800 (PST) Received: (from ken@localhost) by panzer.kdm.org (8.11.6/8.9.1) id g2TFBD428658; Fri, 29 Mar 2002 08:11:13 -0700 (MST) (envelope-from ken) Date: Fri, 29 Mar 2002 08:11:13 -0700 From: "Kenneth D. Merry" To: Lukas Ertl Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: ciss driver and tagged queuing Message-ID: <20020329081113.A28622@panzer.kdm.org> References: <20020328163740.A24032@panzer.kdm.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: ; from l.ertl@univie.ac.at on Fri, Mar 29, 2002 at 09:53:02AM +0100 Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Fri, Mar 29, 2002 at 09:53:02 +0100, Lukas Ertl wrote: > On Thu, 28 Mar 2002, Kenneth D. Merry wrote: > > Okay, it looks like you should be able to send at least 256 simultaneous > > commands. What does dmesg say about da1 (which I assume is the smart array > > device)? (might be faster to just send the full dmesg output) > > Here you are: > [ ... ] > da1 at ciss1 bus 0 target 0 lun 0 > da1: Fixed Direct Access SCSI-0 device > da1: 135.168MB/s transfers > da1: 416780MB (853565580 512 byte sectors: 255H 32S/T 39067C) > da0 at ciss0 bus 0 target 0 lun 0 > da0: Fixed Direct Access SCSI-0 device > da0: 135.168MB/s transfers > da0: 17359MB (35553120 512 byte sectors: 255H 32S/T 4357C) The problem is that the inquiry data doesn't indicate that the arrays support tagged queueing, so you only get one tag at a time. Ken -- Kenneth Merry ken@kdm.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message