From owner-freebsd-stable@FreeBSD.ORG Wed Dec 20 10:17:11 2006 Return-Path: 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 3F26F16A403 for ; Wed, 20 Dec 2006 10:17:11 +0000 (UTC) (envelope-from joao@matik.com.br) Received: from msrv.matik.com.br (msrv.matik.com.br [200.152.83.14]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9662D43CA0 for ; Wed, 20 Dec 2006 10:17:10 +0000 (GMT) (envelope-from joao@matik.com.br) Received: from anb (anb.matik.com.br [200.152.83.34]) by msrv.matik.com.br (8.13.8/8.13.1) with ESMTP id kBKAH7ou005541; Wed, 20 Dec 2006 07:17:07 -0300 (BRT) (envelope-from joao@matik.com.br) From: JoaoBR Organization: Infomatik To: freebsd-stable@freebsd.org, Mark Kirkwood Date: Wed, 20 Dec 2006 08:16:50 -0200 User-Agent: KMail/1.9.4 References: <45888C68.10305@paradise.net.nz> <200612200618.12826.joao@matik.com.br> <4589045C.1050206@paradise.net.nz> In-Reply-To: <4589045C.1050206@paradise.net.nz> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Message-Id: <200612200816.51043.joao@matik.com.br> X-Virus-Scanned: ClamAV version 0.88.4, clamav-milter version 0.88.4 on msrv.matik.com.br X-Virus-Status: Clean Cc: Subject: Re: Cached file read performance with 6.2-PRERELEASE X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Dec 2006 10:17:11 -0000 On Wednesday 20 December 2006 07:37, Mark Kirkwood wrote: > JoaoBR wrote: > > On Tuesday 19 December 2006 22:05, Mark Kirkwood wrote: > >> $ dd of=3D/dev/null if=3D/tmp/file bs=3D32k # read it > >> 819200000 bytes transferred in 1.801944 secs (454620117 bytes/sec) > > > > hum, look my releng_6: > > > > # dd of=3D/dev/null if=3D/c/c1/file bs=3D32k > > 819200000 bytes transferred in 0.896507 secs (913768635 bytes/sec) > > Hmm - so your machine reads memory twice as fast as mine, which is > great! but I'm not sure it actually shows anything useful ... let me > guess - a P4 with DDR or DDR2 memory??? maybe if we look a bit harder at > buffer cache performance you could get 1.2GB/s or more - wouldn't that > be a good thing? oh! if it is useful or not seems to be your call, you was the one who said= =20 linux is twice as fast as freebsd :) it's a dual-opteron with ddr400 I just compiled world with no tweaks and=20 standard newfs options if you're interested I send new results after completing my setup =2D-=20 Jo=E3o A mensagem foi scaneada pelo sistema de e-mail e pode ser considerada segura. Service fornecido pelo Datacenter Matik https://datacenter.matik.com.br