From owner-freebsd-current@FreeBSD.ORG Thu Apr 12 02:14:41 2007 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id ED8C716A400; Thu, 12 Apr 2007 02:14:41 +0000 (UTC) (envelope-from ticso@cicely12.cicely.de) Received: from raven.bwct.de (raven.bwct.de [85.159.14.73]) by mx1.freebsd.org (Postfix) with ESMTP id 65A9913C48C; Thu, 12 Apr 2007 02:14:41 +0000 (UTC) (envelope-from ticso@cicely12.cicely.de) Received: from cicely5.cicely.de ([10.1.1.7]) by raven.bwct.de (8.13.4/8.13.4) with ESMTP id l3C2D0PN042335; Thu, 12 Apr 2007 04:13:01 +0200 (CEST) (envelope-from ticso@cicely12.cicely.de) Received: from cicely12.cicely.de (cicely12.cicely.de [10.1.1.14]) by cicely5.cicely.de (8.13.4/8.13.4) with ESMTP id l3C2CrnS031220 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 12 Apr 2007 04:12:53 +0200 (CEST) (envelope-from ticso@cicely12.cicely.de) Received: from cicely12.cicely.de (localhost [127.0.0.1]) by cicely12.cicely.de (8.13.4/8.13.3) with ESMTP id l3C2CqTe033302; Thu, 12 Apr 2007 04:12:52 +0200 (CEST) (envelope-from ticso@cicely12.cicely.de) Received: (from ticso@localhost) by cicely12.cicely.de (8.13.4/8.13.3/Submit) id l3C2CqOv033301; Thu, 12 Apr 2007 04:12:52 +0200 (CEST) (envelope-from ticso) Date: Thu, 12 Apr 2007 04:12:52 +0200 From: Bernd Walter To: Louis Kowolowski Message-ID: <20070412021251.GP30772@cicely12.cicely.de> References: <20070406025700.GB98545@garage.freebsd.pl> <86k5wo55s0.fsf@dwp.des.no> <20070407203411.GJ8831@cicely12.cicely.de> <86wt0n3mxv.fsf@dwp.des.no> <20070411214911.GA38351@VARK.MIT.EDU> <20070411225124.GM30772@cicely12.cicely.de> <20070411231045.GC1726@cryptomonkeys.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070411231045.GC1726@cryptomonkeys.com> X-Operating-System: FreeBSD cicely12.cicely.de 5.4-STABLE alpha User-Agent: Mutt/1.5.9i X-Spam-Status: No, score=-4.4 required=5.0 tests=ALL_TRUSTED=-1.8, BAYES_00=-2.599 autolearn=ham version=3.1.7 X-Spam-Checker-Version: SpamAssassin 3.1.7 (2006-10-05) on cicely12.cicely.de Cc: freebsd-fs@freebsd.org, freebsd-current@freebsd.org Subject: Re: ZFS committed to the FreeBSD base. X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: ticso@cicely.de List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Apr 2007 02:14:42 -0000 On Wed, Apr 11, 2007 at 04:10:46PM -0700, Louis Kowolowski wrote: > On Thu, Apr 12, 2007 at 12:51:25AM +0200, Bernd Walter wrote: > ... > > 486 support is definitively needed, but it is very unlikely that many > > real existing 486 system has enough RAM for ZFS. > > AFAIK a ELAN520 can have up to 256MB, but I doubt that one would > > spend so much RAM for such a system without better use for it. > > Not shure about 586, this is more likely. > > But I'm not very familar with x86 assembly, so I don't even know which > > CPUs have cmpxchg8b. > > If ZFS wouldn't be so greedy I might have used it on flash media for > > x86 and ARM systems, but those boards usually don't have enough RAM. > > > I'm some people would be interested in being able to use ZFS with boxes like > Soekris for NAS (FreeNAS comes to mind) type stuff... I'm currently running an NFS fileserver with 384M RAM, which seems to work with some restrictions, but it is also putting pressure on the CPU, which is a 700MHz PIII and this is not only while accessing compressed data. You might be able to get it running on a 256MB 4801, but don't expect any speed wonders. The upcoming 5501 might be a good candidate if populated with much RAM. If I got the prototype picture on soekris.com right they have 512MBit chips soldered, which gives 256MB only - more than enough for most embedded use, but not with ZFS as it stands right now... That said - I don't know what the default population really will be. -- B.Walter http://www.bwct.de http://www.fizon.de bernd@bwct.de info@bwct.de support@fizon.de