From owner-freebsd-mobile Fri May 11 2:53: 2 2001 Delivered-To: freebsd-mobile@freebsd.org Received: from bumper.jellybaby.net (bumper.jellybaby.net [194.159.247.1]) by hub.freebsd.org (Postfix) with ESMTP id 238A737B422 for ; Fri, 11 May 2001 02:52:59 -0700 (PDT) (envelope-from simond@bumper.jellybaby.net) Received: (from simond@localhost) by bumper.jellybaby.net (8.9.2/8.9.2) id KAA76044; Fri, 11 May 2001 10:54:26 +0100 (BST) (envelope-from simond) Date: Fri, 11 May 2001 10:54:26 +0100 From: simond@irrelevant.org To: Leon Breedt Cc: freebsd-mobile@freebsd.org Subject: Re: slow IDE performance Message-ID: <20010511105426.A75378@irrelevant.org> References: <20010511112808.E8710@shell.devco.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0.1i In-Reply-To: <20010511112808.E8710@shell.devco.net>; from ljb@devco.net on Fri, May 11, 2001 at 11:28:08AM +0200 Sender: owner-freebsd-mobile@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Fri, May 11, 2001 at 11:28:08AM +0200, Leon Breedt wrote: > Hi, > > I'm not sure if this was already posted, a search didn't turn anything up. > > On my Thinkpad A20m I experienced insane IDE write slowdowns at some point > in updating to 4.3-RC. I could basically do *nothing* while doing large IDE > transfers. This persisted in -RELEASE and -STABLE. > > A quick query of my friendly committer colleague revealed that ATA write > caching was now disabled by default. > > Enabling it in /boot/loader.conf restored my sanity: > > hw.ata.wc="1" I didn't notice any problems with ufs on it, but when I tried using the msdos filesystem without a write cache it crawled :( -- Simon Dick simond@irrelevant.org "Why do I get this urge to go bowling everytime I see Tux?" To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message