From owner-freebsd-hackers Wed Jan 29 15:28:12 2003 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7BE4F37B401; Wed, 29 Jan 2003 15:28:11 -0800 (PST) Received: from sasami.jurai.net (sasami.jurai.net [66.92.160.223]) by mx1.FreeBSD.org (Postfix) with ESMTP id AEC0743F43; Wed, 29 Jan 2003 15:28:10 -0800 (PST) (envelope-from winter@jurai.net) Received: from sasami.jurai.net (sasami.jurai.net [66.92.160.223]) by sasami.jurai.net (8.12.6/8.12.5) with ESMTP id h0TNS9vA032891; Wed, 29 Jan 2003 18:28:09 -0500 (EST) (envelope-from winter@jurai.net) Date: Wed, 29 Jan 2003 18:28:09 -0500 (EST) From: "Matthew N. Dodd" To: phk@freebsd.org Cc: David Gilbert , freebsd-hackers@freebsd.org Subject: Re: Network block device. In-Reply-To: <16443.1043882006@critter.freebsd.dk> Message-ID: <20030129181859.X8642@sasami.jurai.net> References: <16443.1043882006@critter.freebsd.dk> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu, 30 Jan 2003 phk@freebsd.org wrote: > In message <20030129180043.S8642@sasami.jurai.net>, "Matthew N. Dodd" writes: > >On Wed, 29 Jan 2003, David Gilbert wrote: > >So involving NFS isn't really going to make that much of a difference. > > Yes, it sure would. nfs1:/foo/foo1 -> md1 nfs2:/foo/foo2 -> md2 ccd0 64 none md1 md2 # bonnie -s 16m ... -------Sequential Output-------- ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 16 783 7.0 629 0.6 862 0.7 10813 95.1 210575 93.2 21433.1 98.8 Ignore the reads here. Writes seem good for a half-duplex 10baseT network. The NFS servers aren't very fast either. I'd say 600kb/sec+ is pretty reasonable. # rawio -a /dev/ccd0 -s 16777216 Random read Sequential read Random write Sequential write ID K/sec /sec K/sec /sec K/sec /sec K/sec /sec ccd0 13192.4 789 0.0 0 13200.1 790 0.0 0 I'm not sure what to make of this. I'll try with larger files when I get home and add a 3rd server. -- | Matthew N. Dodd | '78 Datsun 280Z | '75 Volvo 164E | FreeBSD/NetBSD | | winter@jurai.net | 2 x '84 Volvo 245DL | ix86,sparc,pmax | | http://www.jurai.net/~winter | For Great Justice! | ISO8802.5 4ever | To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message