From owner-freebsd-hackers Thu May 24 8:26:14 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from perninha.conectiva.com.br (perninha.conectiva.com.br [200.250.58.156]) by hub.freebsd.org (Postfix) with ESMTP id 6BB6137B422 for ; Thu, 24 May 2001 08:26:10 -0700 (PDT) (envelope-from riel@conectiva.com.br) Received: from burns.conectiva (burns.conectiva [10.0.0.4]) by perninha.conectiva.com.br (Postfix) with SMTP id 23C9F16B50 for ; Thu, 24 May 2001 12:26:07 -0300 (EST) Received: (qmail 24956 invoked by uid 0); 24 May 2001 15:24:34 -0000 Received: from duckman.distro.conectiva (HELO duckman.conectiva.com.br) (root@10.0.17.2) by burns.conectiva with SMTP; 24 May 2001 15:24:34 -0000 Received: from localhost (riel@localhost) by duckman.conectiva.com.br (8.11.3/8.11.3) with ESMTP id f4OFPxx15992; Thu, 24 May 2001 12:26:01 -0300 X-Authentication-Warning: duckman.distro.conectiva: riel owned process doing -bs Date: Thu, 24 May 2001 12:25:59 -0300 (BRST) From: Rik van Riel X-X-Sender: To: Shannon Cc: "Andresen,Jason R." , Kris Kennaway , Nadav Eiron , Subject: Re: technical comparison In-Reply-To: <20010523234910.B19185@widomaker.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII 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 On Wed, 23 May 2001, Shannon wrote: > On Wed, May 23, 2001 at 10:54:40PM -0300, Rik van Riel wrote: > > > 1. I don't think I've ever seen a Linux distro which has write > > caching enabled by default. Hell, DMA33 isn't even enabled > > by default ;) > > 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 2) soft-updates _is_ a form of write cache in the filesystem code, in fact, that's one of the points of soft-updates in the first place ;) regards, Rik -- Linux MM bugzilla: http://linux-mm.org/bugzilla.shtml Virtual memory is like a game you can't win; However, without VM there's truly nothing to lose... http://www.surriel.com/ http://www.conectiva.com/ http://distro.conectiva.com/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message