Date: Fri, 29 Mar 2002 08:11:13 -0700 From: "Kenneth D. Merry" <ken@kdm.org> To: Lukas Ertl <l.ertl@univie.ac.at> Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: ciss driver and tagged queuing Message-ID: <20020329081113.A28622@panzer.kdm.org> In-Reply-To: <Pine.WNT.4.43.0203290950180.576-100000@korben>; from l.ertl@univie.ac.at on Fri, Mar 29, 2002 at 09:53:02AM %2B0100 References: <20020328163740.A24032@panzer.kdm.org> <Pine.WNT.4.43.0203290950180.576-100000@korben>
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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: <RAID 5 OK > 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: <RAID 1 OK > 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
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