From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262224AbVEROZ3 (ORCPT ); Wed, 18 May 2005 10:25:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262235AbVEROLC (ORCPT ); Wed, 18 May 2005 10:11:02 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:11749 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S262193AbVEROC7 (ORCPT ); Wed, 18 May 2005 10:02:59 -0400 Date: Wed, 18 May 2005 15:02:58 +0100 From: Christoph Hellwig To: Jan Kasprzak Cc: linux-kernel@vger.kernel.org Subject: Re: XFS lstat() _very_ slow on SMP Message-ID: <20050518140258.GA22587@infradead.org> Mail-Followup-To: Christoph Hellwig , Jan Kasprzak , linux-kernel@vger.kernel.org References: <20050516162506.GB19415@fi.muni.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050516162506.GB19415@fi.muni.cz> User-Agent: Mutt/1.4.1i X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, May 16, 2005 at 06:25:06PM +0200, Jan Kasprzak wrote: > Hi all, > > I have a big XFS volume on my fileserver, and I have noticed that > making an incremental backup of this volume is _very_ slow. The incremental > backup essentially checks mtime of all files on this volume, and it > takes ~4ms of _system_ time (i.e. no iowait or what) to do a lstat(). Thanks a lot for the report, I'll investigate what's going on once I get a little time. (Early next week I hope)