*BSD News Article 19716


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From: osyjm@cs.montana.edu (Jaye Mathisen)
Newsgroups: comp.os.386bsd.questions
Subject: Re: [Very Late SUMMARY] SCSI controller reccomendations for *BSD.
Date: 20 Aug 1993 16:37:30 GMT
Organization: Computer Science, MSU, Bozeman MT, 59717
Lines: 25
Message-ID: <252uka$3r9@pdq.coe.montana.edu>
References: <24vuul$apo@gdls.gdls.com> <hastyCC1IDD.9y5@netcom.com>
NNTP-Posting-Host: schizo.coe.montana.edu
Keywords: SUMMARY SCSI BSD 386

In article <hastyCC1IDD.9y5@netcom.com>,
Amancio Hasty Jr <hasty@netcom.com> wrote:
>However, I am interested on who has the fastest scsi/drive 
>combination. So far I think that Seagates 2.0gb  is one of the 
>fastest drives around. It is average access time is around 4.2 ms.
>It will be interesting to hear about iozones measurements done
>on various systems specially EISA or Local Bus.

Right before the end, I had a DEC EISA 486DX50 with 64MB's, an Adaptec
1740, and a DEC RZ25, and after playing with all the tuning parameters
I could find, I think I ended up with

1.8MB/s reading
1.4MB/s writing

I think it would've been significantly better with DEC's RZ26, which is
a better drive.

Also, the 1740 is kind of old, all things considered.  I understand Adaptec
is bringing out the 2700 series controllers, and I would be very interested
in the performance of those.
-- 
 Jaye Mathisen, COE Systems Manager                (406) 994-4780
 410 Roberts Hall,Dept. of Computer Science
 Montana State University,Bozeman MT 59717	osyjm@cs.montana.edu