From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: PROBLEM: SATA AHCI driver significant throughput loss in 2.6.22-rc5-g75154f40-dirty Date: Tue, 03 Jul 2007 17:24:00 +0900 Message-ID: <468A07A0.5010302@gmail.com> References: <439fa30706262117u2d5553dfp8395c6ca41574a8c@mail.gmail.com> <6bffcb0e0706290636t334e2e29h17d215cee77dc2da@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from nz-out-0506.google.com ([64.233.162.234]:61570 "EHLO nz-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755794AbXGCIZU (ORCPT ); Tue, 3 Jul 2007 04:25:20 -0400 Received: by nz-out-0506.google.com with SMTP id s18so1147515nze for ; Tue, 03 Jul 2007 01:25:19 -0700 (PDT) In-Reply-To: <6bffcb0e0706290636t334e2e29h17d215cee77dc2da@mail.gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Michal Piotrowski Cc: Dan , linux-kernel@vger.kernel.org, IDE/ATA development list Michal Piotrowski wrote: > Hi, > > [adding linux-ide to cc] > > On 27/06/07, 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. Please post boot dmesgs of before and after. -- tejun