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From: Joe Greco <jgreco@brasil.moneng.mei.com>
Message-Id: <199610181428.JAA02841@brasil.moneng.mei.com>
Subject: Re: Iozone: local vs nfs drives
To: michaelv@MindBender.serv.net (Michael L. VanLoon -- HeadCandy.com)
Date: Fri, 18 Oct 1996 09:28:28 -0500 (CDT)
Cc: scrappy@ki.net, michaelh@cet.co.jp, mrcpu@cdsnet.net, current@freebsd.org
In-Reply-To: <199610180457.VAA14497@MindBender.serv.net> from "Michael L. VanLoon -- HeadCandy.com" at Oct 17, 96 09:57:31 pm
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> Ah yes.  It must have been someone else that posted that he was using
> an Adaptec 2940.  I mis-threaded...
> 
> I know the NCR supports tagged-command-queuing, also, but since I
> don't use one (except on some NT machines at work), I don't know what
> you do to enable it.  Joe Greco would know.

I take exception to that :-)  Alls I know is that they are enabled by 
default.

Run "ncrcontrol":

# ncrcontrol
T:L  Vendor   Device           Rev  Speed   Max Wide Tags
0:0  SEAGATE  ST31055N         0318  10.0  10.0   8    4
1:0  SEAGATE  ST31055N         0318  10.0  10.0   8    4
2:0  SEAGATE  ST31055N         0318  10.0  10.0   8    4
3:0  SEAGATE  ST31055N         0318  10.0  10.0   8    4
4:0  SEAGATE  ST31055N         0318  10.0  10.0   8    4

I just a day or two ago sent a note to Stefan asking about the maximum
number of tags allowable...  it looks to me as though IF you are using
the Adaptec stuff that it defaults to 8 tags.  I really don't know
anything much about the real technical details of this stuff though..
I rely on the SCSI gods for this info.

... JG