From owner-freebsd-questions  Thu Apr  4 16:39: 3 2002
Delivered-To: freebsd-questions@freebsd.org
Received: from ws4-2.us4.outblaze.com (205-158-62-67.outblaze.com [205.158.62.67])
	by hub.freebsd.org (Postfix) with SMTP id 8ECAD37B405
	for <questions@FreeBSD.ORG>; Thu,  4 Apr 2002 16:38:59 -0800 (PST)
Received: (qmail 29393 invoked by uid 1001); 5 Apr 2002 00:38:59 -0000
Message-ID: <20020405003859.29392.qmail@operamail.com>
Content-Type: text/plain; charset="US-ASCII"
Content-Disposition: inline
Content-Transfer-Encoding: 7bit
MIME-Version: 1.0
X-Mailer: MIME-tools 5.41 (Entity 5.404)
Received: from [63.214.216.31] by ws4-2.us4.outblaze.com with http for
    jud@operamail.com; Thu, 04 Apr 2002 19:38:59 -0500
From: "Jud " <jud@operamail.com>
To: <culverk@alpha.yumyumyum.org>, <dnelson@allantgroup.com>
Cc: <george@galis.org>, <Kevin_Stevens@pursued-with.net>,
	<nl3481@wi.rr.com>, <questions@FreeBSD.ORG>
Date: Thu, 04 Apr 2002 19:38:59 -0500
Subject: Re: EIDE drive performance improvements
X-Originating-Ip: 63.214.216.31
X-Originating-Server: ws4-2.us4.outblaze.com
Sender: owner-freebsd-questions@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-questions.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-questions>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-questions>
X-Loop: FreeBSD.ORG

    

----- Original Message -----
From: Kenneth Culver <culverk@alpha.yumyumyum.org>
Date: Thu, 4 Apr 2002 18:39:12 -0500 (EST)
To: Dan Nelson <dnelson@allantgroup.com>
Subject: Re: EIDE drive performance improvements


> > You should be able to, depending on how the controller presents itself
> > to the system.  The asr driver looks like a scsi disk to the system, and
> > can accept 255 tagged commands.  I haven't seen my array go above 60,
> > but it does work.
> >
> > --
> Yeah, but we're talking about an ATA array here, I'm not sure that it
> would work the same.

Some RAID controllers for ATA/IDE drives look like a 
single SCSI device to the system.  I don't think that's 
true of my Promise onboard chip (a software rather than a 
hardware controller), because I have no SCSI support in 
the kernel but the array works fine.

Don't think I need much more tuning anyhow - my last "make 
world" took a shade under 20 minutes.  :)

Jud
-- 

_______________________________________________
Download the free Opera browser at http://www.opera.com/

Powered by Outblaze

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message