From owner-freebsd-current@FreeBSD.ORG Mon Jan 7 13:44:11 2008 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 038DE16A421 for ; Mon, 7 Jan 2008 13:44:11 +0000 (UTC) (envelope-from des@des.no) Received: from tim.des.no (tim.des.no [194.63.250.121]) by mx1.freebsd.org (Postfix) with ESMTP id B3FA413C45D for ; Mon, 7 Jan 2008 13:44:10 +0000 (UTC) (envelope-from des@des.no) Received: from tim.des.no (localhost [127.0.0.1]) by spam.des.no (Postfix) with ESMTP id E94882099; Mon, 7 Jan 2008 14:44:00 +0100 (CET) X-Spam-Tests: AWL X-Spam-Learn: disabled X-Spam-Score: -0.2/3.0 X-Spam-Checker-Version: SpamAssassin 3.2.3 (2007-08-08) on tim.des.no Received: from ds4.des.no (des.no [80.203.243.180]) by smtp.des.no (Postfix) with ESMTP id 5D9D6207E; Mon, 7 Jan 2008 14:44:00 +0100 (CET) Received: by ds4.des.no (Postfix, from userid 1001) id 35DA9844AF; Mon, 7 Jan 2008 14:44:00 +0100 (CET) From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= To: Matthew Dillon References: <200801012116.m01LGQhN012860@bonkers.video-collage.com> <200801032334.m03NY7Zd019292@apollo.backplane.com> Date: Mon, 07 Jan 2008 14:44:00 +0100 In-Reply-To: <200801032334.m03NY7Zd019292@apollo.backplane.com> (Matthew Dillon's message of "Thu\, 3 Jan 2008 15\:34\:07 -0800 \(PST\)") Message-ID: <863at97ntr.fsf@ds4.des.no> User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.1 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Cc: Mikhail Teterin , efinleywork@efinley.com, current@freebsd.org Subject: Re: a new way to hang 7.0 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Jan 2008 13:44:11 -0000 Matthew Dillon writes: > Well, that description of DragonFly isn't really accurate any more, > we're about as close to FreeBSD 4 as FreeBSD 7 is... [...] > > I froze all the softupdates work in DragonFly prior to the snapshot > code, and have not performed or allowed any new softupdates work to be > ported over since then, only bug fixes. [...] > > DragonFly has a new filesystem called HAMMER in the works which should > become production ready in a few months. [...] OK, so you reject softupdates because it took time to mature and you assume it stopped improving when you stopped paying attention. How long do you think it will take for HAMMER to mature? Realistically? How long will HAMMER be "a huge source of bugs in the system" before it stabilizes? Think back to when you started DragonFly. How soon did you expect it to overtake FreeBSD in SMP performance? And how long did it actually take? Actually, it never happened - DrangonFly doesn't scale at all across multiple cores, while FreeBSD 7 leads the pack. Perhaps you should adjust your expectations a bit. I don't doubt that HAMMER will be a very interesting file system when it's stable, but I doubt very much that will happen any time soon. In fact, I think it will take about as long for HAMMER to mature as it took for softupdates and SMPng. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no