From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965817AbWKJDgj (ORCPT ); Thu, 9 Nov 2006 22:36:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S966074AbWKJDgj (ORCPT ); Thu, 9 Nov 2006 22:36:39 -0500 Received: from sandeen.net ([209.173.210.139]:34170 "EHLO sandeen.net") by vger.kernel.org with ESMTP id S965817AbWKJDgj (ORCPT ); Thu, 9 Nov 2006 22:36:39 -0500 Message-ID: <4553F3C6.2030807@sandeen.net> Date: Thu, 09 Nov 2006 21:36:38 -0600 From: Eric Sandeen User-Agent: Thunderbird 1.5.0.8 (Macintosh/20061025) MIME-Version: 1.0 To: "Igor A. Valcov" CC: linux-kernel , xfs@oss.sgi.com Subject: Re: XFS filesystem performance drop in kernels 2.6.16+ References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Igor A. Valcov wrote: > I also noticed that I/O barriers were introduced in v2.6.16 and > thought they may be the cause, but mounting the file system with > 'nobarrier' doesn't seem to affect the performance in any way. did this happen to be a remount with nobarrier, or a fresh mount? -Eric