From owner-freebsd-stable@FreeBSD.ORG  Tue May  8 04:37:13 2007
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
X-Original-To: freebsd-stable@freebsd.org
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id 0CB2716A404
	for <freebsd-stable@freebsd.org>; Tue,  8 May 2007 04:37:13 +0000 (UTC)
	(envelope-from kris@obsecurity.org)
Received: from elvis.mu.org (elvis.mu.org [192.203.228.196])
	by mx1.freebsd.org (Postfix) with ESMTP id EE15A13C483
	for <freebsd-stable@freebsd.org>; Tue,  8 May 2007 04:37:12 +0000 (UTC)
	(envelope-from kris@obsecurity.org)
Received: from obsecurity.dyndns.org (elvis.mu.org [192.203.228.196])
	by elvis.mu.org (Postfix) with ESMTP id D53461A4D89;
	Mon,  7 May 2007 21:37:53 -0700 (PDT)
Received: by obsecurity.dyndns.org (Postfix, from userid 1000)
	id 472E0514DD; Tue,  8 May 2007 00:37:12 -0400 (EDT)
Date: Tue, 8 May 2007 00:37:12 -0400
From: Kris Kennaway <kris@obsecurity.org>
To: "Mars G. Miro" <marsgmiro@gmail.com>
Message-ID: <20070508043712.GA62947@xor.obsecurity.org>
References: <28edec3c0705071447t64eb6ea1n7a18550d4af6d883@mail.gmail.com>
	<200705072228.l47MSCSr048972@lurza.secnetix.de>
	<28edec3c0705072045s18a2cb53ia4f66030e4e3fb22@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <28edec3c0705072045s18a2cb53ia4f66030e4e3fb22@mail.gmail.com>
User-Agent: Mutt/1.4.2.2i
Cc: Oliver Fromme <olli@lurza.secnetix.de>, freebsd-stable@freebsd.org
Subject: Re: mfs and buildworlds on the SunFire x4600
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 08 May 2007 04:37:13 -0000

On Tue, May 08, 2007 at 11:45:12AM +0800, Mars G. Miro wrote:

> that or, does mfs speeding things up really work?  remains to be
> seen ...

Of course it does...even the fastest disk hardware on the market
(well, as of a year ago) is several times slower than memory writing,
and commodity disk hardware is orders of magnitude slower.  Yes, I
have the measurements to prove this:

  http://people.freebsd.org/~kris/scaling/Filesystem%20Performance.pdf

Kris