From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Thu, 09 Nov 2006 19:37:37 -0800 (PST) Received: from cuda.sgi.com (cuda1.sgi.com [192.48.168.28]) by oss.sgi.com (8.12.10/8.12.10/SuSE Linux 0.7) with ESMTP id kAA3bVaG015452 for ; Thu, 9 Nov 2006 19:37:31 -0800 Received: from sandeen.net (sandeen.net [209.173.210.139]) by cuda.sgi.com (Spam Firewall) with ESMTP id A0A214E24B1 for ; Thu, 9 Nov 2006 19:36:39 -0800 (PST) Message-ID: <4553F3C6.2030807@sandeen.net> Date: Thu, 09 Nov 2006 21:36:38 -0600 From: Eric Sandeen MIME-Version: 1.0 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: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com List-Id: xfs To: "Igor A. Valcov" Cc: linux-kernel , xfs@oss.sgi.com 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