Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1946517AbWKJMBj (ORCPT ); Fri, 10 Nov 2006 07:01:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1946518AbWKJMBj (ORCPT ); Fri, 10 Nov 2006 07:01:39 -0500 Received: from emailer.gwdg.de ([134.76.10.24]:50081 "EHLO emailer.gwdg.de") by vger.kernel.org with ESMTP id S1946517AbWKJMBi (ORCPT ); Fri, 10 Nov 2006 07:01:38 -0500 Date: Fri, 10 Nov 2006 12:59:59 +0100 (MET) From: Jan Engelhardt To: Eric Sandeen cc: "Igor A. Valcov" , linux-kernel , xfs@oss.sgi.com Subject: Re: XFS filesystem performance drop in kernels 2.6.16+ In-Reply-To: <4553F3C6.2030807@sandeen.net> Message-ID: References: <4553F3C6.2030807@sandeen.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Spam-Report: Content analysis: 0.0 points, 6.0 required _SUMMARY_ Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 591 Lines: 18 >> 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? For the barrier stuff, see http://lkml.org/lkml/2006/5/19/33 -`J' -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/