From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751721AbWDCP0a (ORCPT ); Mon, 3 Apr 2006 11:26:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751724AbWDCP0a (ORCPT ); Mon, 3 Apr 2006 11:26:30 -0400 Received: from unthought.net ([212.97.129.88]:23563 "EHLO unthought.net") by vger.kernel.org with ESMTP id S1751717AbWDCP0a (ORCPT ); Mon, 3 Apr 2006 11:26:30 -0400 Date: Mon, 3 Apr 2006 17:26:28 +0200 From: Jakob Oestergaard To: Trond Myklebust , linux-kernel@vger.kernel.org Subject: Re: NFS client (10x) performance regression 2.6.14.7 -> 2.6.15 Message-ID: <20060403152628.GA14981@unthought.net> Mail-Followup-To: Jakob Oestergaard , Trond Myklebust , linux-kernel@vger.kernel.org References: <1143807770.8096.4.camel@lade.trondhjem.org> <20060331124518.GH9811@unthought.net> <1143810392.8096.11.camel@lade.trondhjem.org> <20060331132131.GI9811@unthought.net> <1143812658.8096.18.camel@lade.trondhjem.org> <20060331140816.GJ9811@unthought.net> <1143814889.8096.22.camel@lade.trondhjem.org> <20060331143500.GK9811@unthought.net> <1143820520.8096.24.camel@lade.trondhjem.org> <20060331160426.GN9811@unthought.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060331160426.GN9811@unthought.net> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I've run a git bisect from 2.6.14 to 2.6.15 to find what broke the NFS client. It seems to be the GIT patch: 24aa1fe6779eaddb3e0b1b802585dcf6faf9cc44 that introduces the problem. Trond, it took me a lot of tries with GIT to narrow this down, because the problem does not show up consistently. Some times nfsbench would complete very quickly, but then a second (or third or ...) run would run slow. Could I ask you to try: for i in `seq 1 100`; do time ./nfsbench; done or something like that? I'm looking through the patch, but to be honest the NFS cache internals isn't really something I understand... :) -- / jakob