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Date:      Thu, 21 Jun 2001 09:10:33 +0200 (CEST)
From:      Søren Schmidt <sos@freebsd.dk>
To:        nnd@mail.nsk.ru
Cc:        current@FreeBSD.ORG
Subject:   Re: More ATA disks with tagged queueing ?
Message-ID:  <200106210710.f5L7AYb08110@freebsd.dk>
In-Reply-To: <200106210535.f5L5ZOF62152@wint.itfs.nsk.su> "from nnd@mail.nsk.ru at Jun 21, 2001 12:35:24 pm"

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It seems nnd@mail.nsk.ru wrote:
> 	After applaying the next patch I can now see
> in dmesg output:
> 
> 	........
> ad4: 19574MB <IBM-DPTA-372050> [39770/16/63] at ata2-master tagged UDMA66
> ad6: 19623MB <IC35L020AVER07-0> [39870/16/63] at ata3-master tagged UDMA66
> 	.........
> 
> 	This configuration (ad6 is the IBM's Deskstar 60GXP(?) series
> disk) was 'tested' by the 'make -j32 buildworld' with the /usr/obj
> on the ad6 disk.
> 
> 	Does this mean that this disk really support "tagged queueing" ?

Yups, else it would have failed bitterly..
The diskid (IC...) has me somewhat stumped though, I would have thougt
the used something like all other IBM disks. Is this a genuine IBM disk
or is it some kind of OEM/rebadged device ?

> Is there any way to test/demonstarte this ?

Not without instrumenting the code currently

-Søren

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