From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1946805AbXD3VMG (ORCPT ); Mon, 30 Apr 2007 17:12:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1946824AbXD3VMF (ORCPT ); Mon, 30 Apr 2007 17:12:05 -0400 Received: from 216-99-213-120.dsl.aracnet.com ([216.99.213.120]:49663 "EHLO clueserver.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1946805AbXD3VMD (ORCPT ); Mon, 30 Apr 2007 17:12:03 -0400 X-Greylist: delayed 1262 seconds by postgrey-1.27 at vger.kernel.org; Mon, 30 Apr 2007 17:12:03 EDT Date: Mon, 30 Apr 2007 13:51:00 -0700 (PDT) From: alan X-X-Sender: alan@blackbox.fnordora.org To: Alan Cox cc: Stephen.Clark@seclark.us, Jeff Garzik , Chuck Ebbert , linux-ide@vger.kernel.org, LKML Subject: Re: [git patches] libata updates In-Reply-To: <20070430213127.49e4bd73@the-village.bc.nu> Message-ID: References: <20070429161542.GA12501@havoc.gtf.org> <46364901.4000907@redhat.com> <46364C04.4050208@garzik.org> <46364FFA.9050500@seclark.us> <20070430213127.49e4bd73@the-village.bc.nu> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 30 Apr 2007, Alan Cox wrote: >> Yeah the kernel will boot but the hd performance is sh*t on my laptop. I >> am running FC6 with >> kernel 2.6.21 and without the combined_mode setting my disk performance >> goes down to a >> whopping 1.25mb/sec from 44mb/sec when I boot with combined_mode=libata. > > Then something is very wrong with the way you are setting it up, or the > current code. Please post a dmesg booting with libata driving all your > disks and it can get fixed before 2.6.22 > > Do you happen to know how FC7test4 behaves on your box btw I did the upgrade last night. Drive performance was SLLOOWW. When it came time to the reboot, I had a corrupted disk. (Not certain if that was the fault of the upgrade. I have to finish the fsck repairs first.) And this is with ext3. Not good. I have been seeing real bad driver performance on the latest FC6 kernel as well. -- "Invoking the supernatural can explain anything, and hence explains nothing." - University of Utah bioengineering professor Gregory Clark