From owner-freebsd-stable Wed Jan 9 8:54:26 2002 Delivered-To: freebsd-stable@freebsd.org Received: from freebsd.dk (fw-rl0.freebsd.dk [212.242.86.114]) by hub.freebsd.org (Postfix) with ESMTP id B213337B419 for ; Wed, 9 Jan 2002 08:54:22 -0800 (PST) Received: (from sos@localhost) by freebsd.dk (8.11.6/8.11.6) id g09GsG703561; Wed, 9 Jan 2002 17:54:16 +0100 (CET) (envelope-from sos) From: Søren Schmidt Message-Id: <200201091654.g09GsG703561@freebsd.dk> Subject: Re: IDE Prefetch Mode... (was: VIA crashes) In-Reply-To: To: Dominic Marks Date: Wed, 9 Jan 2002 17:54:14 +0100 (CET) Cc: Nils Holland , Matthew Dillon , freebsd-stable@FreeBSD.ORG Reply-To: sos@freebsd.dk X-Mailer: ELM [version 2.4ME+ PL94b (25)] MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG It seems Dominic Marks wrote: > On Wednesday 09 January 2002 4:35 pm, Søren Schmidt wrote: > > It seems Nils Holland wrote: > > > On Tue, Jan 08, 2002 at 01:16:32PM -0800, Matthew Dillon stood up > and spoke: > > > > I'm CCing Soren to make sure he sees this. > > > > > > > > This is good news! > > > > > > It indeed is! However, I'm doing some more testing before I say > > > that disabling IDE Prefetch along with using Soren's 686B patch > > > is the ultimate solution. > > > > Hmm, the BIOS must do more that just toggle prefetch, since the ATA > > driver explicitly turns *on* prefetch :) > > Out of interest - is there a sysctl turnable which can be used to > modify this behaviour as there is for write caching? No, and it should *not* be turned off, it makes some setups fail, which is why the driver enables this.. -Søren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message