From owner-freebsd-hackers@FreeBSD.ORG Thu Mar 3 17:51:19 2005 Return-Path: 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 5E31616A4CE for ; Thu, 3 Mar 2005 17:51:19 +0000 (GMT) Received: from critter.freebsd.dk (f170.freebsd.dk [212.242.86.170]) by mx1.FreeBSD.org (Postfix) with ESMTP id 956CF43D46 for ; Thu, 3 Mar 2005 17:51:18 +0000 (GMT) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.13.1/8.13.1) with ESMTP id j23Hp8YK009679; Thu, 3 Mar 2005 18:51:08 +0100 (CET) (envelope-from phk@critter.freebsd.dk) To: "ALeine" From: "Poul-Henning Kamp" In-Reply-To: Your message of "Wed, 02 Mar 2005 13:15:49 PST." <200503022115.j22LFnWk083926@marlena.vvi.at> Date: Thu, 03 Mar 2005 18:51:08 +0100 Message-ID: <9678.1109872268@critter.freebsd.dk> Sender: phk@critter.freebsd.dk cc: tech-security@NetBSD.org cc: elric@imrryr.org cc: hackers@freebsd.org cc: ticso@cicely.de Subject: Re: FUD about CGD and GBDE X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Mar 2005 17:51:19 -0000 In message <200503022115.j22LFnWk083926@marlena.vvi.at>, "ALeine" writes: >phk@phk.freebsd.dk wrote: > >> I gave up on journalling myself because IMO it complicates >> things a lot and the problem it solves is very very small. > >If only hardware manufacturers were to equip hard drives with >a mechanism to ensure atomic writes. I would prefer "If only some bloddy laywer would stop suing any person who tries to market a NVRAM PCI card" :-( >Journaling would definitely cause more seeks, but the question >is how well that can be compensated for by the reduction of >writes gained from using the other speedup mechanisms I proposed. >I might try implementing this in GBDE first to see what the >benchmarks say. I can not encourage you enough to try it. Don't let peole like Thor scare you away, progress happens when people try to follow their ideas, even if told that they are fools by people who (think they) know better. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.