From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: Re: PROBLEM: SATA AHCI driver significant throughput loss in 2.6.22-rc5-g75154f40-dirty Date: Sat, 30 Jun 2007 00:57:47 -0700 Message-ID: <20070630005747.9bc9ba40.akpm@linux-foundation.org> References: <439fa30706262117u2d5553dfp8395c6ca41574a8c@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from smtp2.linux-foundation.org ([207.189.120.14]:55559 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752253AbXF3H5z (ORCPT ); Sat, 30 Jun 2007 03:57:55 -0400 In-Reply-To: <439fa30706262117u2d5553dfp8395c6ca41574a8c@mail.gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Dan Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org On Wed, 27 Jun 2007 00:17:24 -0400 Dan wrote: > Something changed with the AHCI SATA driver in the latest git version. > With 2.6.21 I get ~49MB/sec according to hdparm. Using the latest git > version I only get ~8MB/sec. I've attached my .config and have > included some info about my system below. Please let me know if you > need more information or if I can help test anything. > > Lenovo Thinkpad T60p Until we know how widespread this damage is, we'd need to consider this a blocking bug. Are you able (as a matter of some urgency) to run a git bisection search to identify the offending commit? Thanks.