From owner-cvs-all@FreeBSD.ORG Tue Apr 8 06:33:15 2003 Return-Path: Delivered-To: cvs-all@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id ADB7437B401; Tue, 8 Apr 2003 06:33:15 -0700 (PDT) Received: from mailout03.sul.t-online.com (mailout03.sul.t-online.com [194.25.134.81]) by mx1.FreeBSD.org (Postfix) with ESMTP id C1C4743FAF; Tue, 8 Apr 2003 06:33:14 -0700 (PDT) (envelope-from Alexander@Leidinger.net) Received: from fwd08.sul.t-online.de by mailout03.sul.t-online.com with smtp id 192tDl-00057i-05; Tue, 08 Apr 2003 15:33:05 +0200 Received: from Andro-Beta.Leidinger.net (520065502893-0001@[80.131.125.201]) by fmrl08.sul.t-online.com with esmtp id 192tDZ-0PGZcmC; Tue, 8 Apr 2003 15:32:53 +0200 Received: from Magelan.Leidinger.net (Magelan [192.168.1.1]) h38DWrBR002045; Tue, 8 Apr 2003 15:32:53 +0200 (CEST) (envelope-from Alexander@Leidinger.net) Received: from Magelan.Leidinger.net (netchild@localhost [127.0.0.1]) by Magelan.Leidinger.net (8.12.9/8.12.9) with SMTP id h38DWxpr005126; Tue, 8 Apr 2003 15:32:59 +0200 (CEST) (envelope-from Alexander@Leidinger.net) Date: Tue, 8 Apr 2003 15:32:59 +0200 From: Alexander Leidinger To: Soeren Schmidt Message-Id: <20030408153259.2a4b03ac.Alexander@Leidinger.net> In-Reply-To: <200304081327.h38DR9XC025406@spider.deepcore.dk> References: <20030408152227.60c38ce3.Alexander@Leidinger.net> <200304081327.h38DR9XC025406@spider.deepcore.dk> X-Mailer: Sylpheed version 0.8.9claws (GTK+ 1.2.10; i386-portbld-freebsd5.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Sender: 520065502893-0001@t-dialin.net cc: cvs-src@freebsd.org cc: src-committers@freebsd.org cc: sos@freebsd.org cc: cvs-all@freebsd.org cc: des@ofug.org Subject: Re: cvs commit: src/sys/dev/ata ata-all.c ata-all.h ata-chipset.cata-dma.c ata-pci.c ata-pci.h X-BeenThere: cvs-all@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: CVS commit messages for the entire tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Apr 2003 13:33:16 -0000 On Tue, 8 Apr 2003 15:27:09 +0200 (CEST) Soeren Schmidt wrote: > It seems Alexander Leidinger wrote: > > Dag-Erling Smorgrav wrote: > > > Alexander Leidinger writes: > > > > For metadata intensive operations in a softupdates world they seem to > > > > buy as much as a write-cache (without the drawbacks of a wc in the > > > > softupdates world)... at least on a SCSI system. > > > > > > ATA != SCSI > > > > Yes... so what's the problem with ATA & TQ? > > Its borked at the moment. I know... let's assume it would work: what's the problem with ATA & TQ which prevents it from being as effective as the SCSI TQ? > > > Besides, enabling ATA tags automatically enables the write cache. > > > > This can be changed... > > No it cannot, requirement of the HW. Does this mean we can't use ATA-TQ in situations where we would use TQ without WC on a SCSI system (read: does it affect softupdates)? Bye, Alexander. -- Intel: where Quality is job number 0.9998782345! http://www.Leidinger.net Alexander @ Leidinger.net GPG fingerprint = C518 BC70 E67F 143F BE91 3365 79E2 9C60 B006 3FE7