From owner-freebsd-hackers  Tue Feb 20 16:34: 1 2001
Delivered-To: freebsd-hackers@freebsd.org
Received: from sasami.jurai.net (sasami.jurai.net [64.0.106.45])
	by hub.freebsd.org (Postfix) with ESMTP
	id 639DA37B491; Tue, 20 Feb 2001 16:33:57 -0800 (PST)
	(envelope-from scanner@jurai.net)
Received: from localhost (scanner@localhost)
	by sasami.jurai.net (8.9.3/8.8.7) with ESMTP id TAA76125;
	Tue, 20 Feb 2001 19:27:43 -0500 (EST)
Date: Tue, 20 Feb 2001 19:27:43 -0500 (EST)
From: <scanner@jurai.net>
To: Gordon Tetlow <gordont@bluemtn.net>
Cc: Dan Phoenix <dphoenix@bravenet.com>,
	Jesper Skriver <jesper@FreeBSD.ORG>, freebsd-hackers@FreeBSD.ORG
Subject: Re: qmail IO--qmail vs postfix competition
In-Reply-To: <Pine.BSF.4.31.0102201620500.18356-100000@sdmail0.sd.bmarts.com>
Message-ID: <Pine.BSF.4.21.0102201923440.74943-100000@sasami.jurai.net>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-hackers@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

On Tue, 20 Feb 2001, Gordon Tetlow wrote:

> Forgot to add info about the mailers. Each has a hardware raid controller
> with about 32MB of memory on the controller configured to RAID-1 2HDs for
> redundancy. Ideally, the mail never actually hits the disk but resides
> exclusively in memory.

	Aha. That explains it. You use HW raid. I wondered why you were
only doing 4 million mails for *30* boxes. Dan, is doing 500K, on a
completely idle box (cpu/ram/I/O wise), with vinum, Postfix, and RAID-0. 
Have you seen brad knowles papers on vinum vs HW raid? It's erm
enlightening to say the least :) Id be happy to dig up the URL if you are
interested. I personally will be using Vinum from now on. The performance
is very impressive.

=============================================================================
-Chris Watson         (316) 326-3862 | FreeBSD Consultant, FreeBSD Geek 
Work:              scanner@jurai.net | Open Systems Inc., Wellington, Kansas
Home:  scanner@deceptively.shady.org | http://open-systems.net
=============================================================================
WINDOWS: "Where do you want to go today?"
LINUX: "Where do you want to go tommorow?"
BSD: "Are you guys coming or what?"
=============================================================================
irc.openprojects.net #FreeBSD -Join the revolution!
ICQ: 20016186


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