From owner-freebsd-hackers Thu May 24 16:13: 4 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from newsguy.com (smtp.newsguy.com [209.155.56.71]) by hub.freebsd.org (Postfix) with ESMTP id 16B8937B423 for ; Thu, 24 May 2001 16:13:02 -0700 (PDT) (envelope-from dcs@newsguy.com) Received: from newsguy.com (ppp185-bsace7001.telebrasilia.net.br [200.181.80.185]) by newsguy.com (8.11.0/8.9.1) with ESMTP id f4ONArF04660; Thu, 24 May 2001 16:10:55 -0700 (PDT) Message-ID: <3B0D9530.37134D9@newsguy.com> Date: Thu, 24 May 2001 20:11:44 -0300 From: "Daniel C. Sobral" X-Mailer: Mozilla 4.77 [en] (Win98; U) X-Accept-Language: en,pt-BR,pt,en-GB,en-US,ja MIME-Version: 1.0 To: Shannon Hendrix Cc: Rik van Riel , "Andresen,Jason R." , Kris Kennaway , Nadav Eiron , hackers@FreeBSD.ORG Subject: Re: technical comparison References: <20010523234910.B19185@widomaker.com> <20010524141431.A8556@widomaker.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit 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 Shannon Hendrix wrote: > > > > You are talking about controlling the IDE drive cache. > > > > > > The issue here is write cache in the filesystem code. > > > > 1) IIRC they were talking about hw.ata.wc > > In a subthread, yeah. I think though, the overall issue is the caching > ext2 does that ufs does not. I'm not even sure that soft updates is > quite the same thing. I think the soft-updates paper mentions that it > shouldn't increase risk, while a lot of people feel like ext2 is very > risky. Actually, no. Someone *specifically* mentioned that FreeBSD 4.3-RELEASE disables hardware caching on IDE, and Linux does not. -- Daniel C. Sobral (8-DCS) dcs@newsguy.com dcs@freebsd.org capo@the.secret.bsdconspiracy.net wow regex humor... I'm a geek To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message