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Date:      Fri, 29 May 1998 11:19:33 -0700 (PDT)
From:      Chris Timmons <skynyrd@opus.cts.cwu.edu>
To:        "Justin T. Gibbs" <gibbs@plutotech.com>
Cc:        scsi@FreeBSD.ORG
Subject:   Re: Quantum Atlas II warning
Message-ID:  <Pine.BSF.3.96.980529111212.22933I-100000@opus.cts.cwu.edu>
In-Reply-To: <199805140512.XAA13306@pluto.plutotech.com>

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Although I haven't yet seen the ugly failure syndrome (yet) that you
alluded to, do you suppose that the later firmware will help with this sad
situation?  This is the repo disk for cvsup.freebsd.org:

da2: <QUANTUM XP34550W LXY4> Fixed Direct Access SCSI2 device 
da2: Serial Number PCB=2011300001  ; HDA=184704251342
da2: 40.0MB/s transfers (20.0MHz, offset 8, 16bit), Tagged Queueing
Enabled
da2: 4341MB (8890760 512 byte sectors: 64H 32S/T 4341C)
(da2:ahc1:0:4:0): tagged openings now 31
(da2:ahc1:0:4:0): tagged openings now 30
(da2:ahc1:0:4:0): tagged openings now 29
(da2:ahc1:0:4:0): tagged openings now 28
(da2:ahc1:0:4:0): tagged openings now 27
(da2:ahc1:0:4:0): tagged openings now 26
(da2:ahc1:0:4:0): tagged openings now 25
(da2:ahc1:0:4:0): tagged openings now 24

Our news server, now running 2.2.6-STABLE+CAM is noticeably revitalized -
throughput increase with CAM was substantial as others running
-current+CAM had reported.  That system has all barracudas and hasn't had
to dynamically lower the tagged openings at all. 

CAM really, really helps (but you knew that :)

-Chris


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