From owner-freebsd-questions@FreeBSD.ORG Tue May 26 19:17:19 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D02E91065738 for ; Tue, 26 May 2009 19:17:19 +0000 (UTC) (envelope-from Ggatten@waddell.com) Received: from mailhost0.waddell.com (mailhost0.waddell.com [12.154.38.61]) by mx1.freebsd.org (Postfix) with ESMTP id 792FB8FC17 for ; Tue, 26 May 2009 19:17:19 +0000 (UTC) (envelope-from Ggatten@waddell.com) Received: from mailhost2.waddell.com (mailhost2.waddell.com [10.1.10.30]) by mailhost0.waddell.com (8.13.8/8.13.8) with ESMTP id n4QJGhbd004847; Tue, 26 May 2009 14:16:58 -0500 (CDT) (envelope-from Ggatten@waddell.com) Received: from mailhost2.waddell.com (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 3DF0BB5998; Tue, 26 May 2009 14:16:43 -0500 (CDT) Received: from wadpexf0.waddell.com (wadpexf0.waddell.com [192.168.204.24]) by mailhost2.waddell.com (Postfix) with ESMTP id CD13CB599A; Tue, 26 May 2009 14:16:34 -0500 (CDT) Received: from WADPEXV0.waddell.com ([192.168.204.25]) by wadpexf0.waddell.com with Microsoft SMTPSVC(6.0.3790.3959); Tue, 26 May 2009 14:16:34 -0500 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Date: Tue, 26 May 2009 14:16:33 -0500 Message-ID: <70C0964126D66F458E688618E1CD008A0793ED96@WADPEXV0.waddell.com> In-Reply-To: <200905261400.22053.kirk@strauser.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: FreeBSD & Software RAID Thread-Index: AcneNGNWrn0EOKNpRw+77rLvCLaOMQAAfB+g References: <4A1AA3DC.5020300@network-i.net><4A1C3725.8040509@infracaninophile.co.uk><70C0964126D66F458E688618E1CD008A0793ED94@WADPEXV0.waddell.com> <200905261400.22053.kirk@strauser.com> From: "Gary Gatten" To: "Kirk Strauser" , X-OriginalArrivalTime: 26 May 2009 19:16:34.0559 (UTC) FILETIME=[7BEE60F0:01C9DE36] Cc: Subject: RE: FreeBSD & Software RAID X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 May 2009 19:17:20 -0000 10-4, thanks! -----Original Message----- From: owner-freebsd-questions@freebsd.org [mailto:owner-freebsd-questions@freebsd.org] On Behalf Of Kirk Strauser Sent: Tuesday, May 26, 2009 2:00 PM To: freebsd-questions@freebsd.org Subject: Re: FreeBSD & Software RAID On Tuesday 26 May 2009 01:44:51 pm Gary Gatten wrote: > What about with PAE and/or other extension schemes? > > If it's just memory requirements, can I assume if I don't have a $hit > load of storage and billions of files it will work "ok" with 4GB of RAM? > I guess I'm just making sure there isn't some bug that only exists on > the i386 architecture? My understanding is that it's much more than "just" the memory addressing.=20=20 ZFS is thoroughly 64-bit and uses 64-bit math pervasively. That means you=20 have to emulate all those operations with 2 32-bit values, and on the=20 register-starved x86 platform you end up with absolutely horrible performance.=20=20 Furthermore, it's just not that well tested. Sun designed ZFS for 64-bit=20 systems and I think 32-bit support was pretty much an afterthought. --=20 Kirk Strauser _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
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