From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756160AbZA2BCr (ORCPT ); Wed, 28 Jan 2009 20:02:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752009AbZA2BCi (ORCPT ); Wed, 28 Jan 2009 20:02:38 -0500 Received: from gw.infinisim.com ([70.143.7.121]:38102 "EHLO mail.infinisim.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751522AbZA2BCh (ORCPT ); Wed, 28 Jan 2009 20:02:37 -0500 Subject: Re: [Bugme-new] [Bug 12564] New: poor performance while preprocessing source code From: Steven Patrick To: Jeff Layton Cc: Andrew Morton , bugme-daemon@bugzilla.kernel.org, linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20090128170506.37161fb6@tleilax.poochiereds.net> References: <20090128132942.c957a199.akpm@linux-foundation.org> <20090128170506.37161fb6@tleilax.poochiereds.net> Date: Wed, 28 Jan 2009 17:02:36 -0800 Message-Id: <1233190956.21519.13.camel@bluishred.int.infinisim.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 7bit X-Mailer: Evolution 2.22.3.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2009-01-28 at 17:05 -0500, Jeff Layton wrote: > > It's a pretty small patch. The obvious question is: "What mount > options > are you using on your NFS mounts?" > Well, I didn't think that I was using any NFS mounts. But, it turns out I was in a way. Apparently, amd does its top level mounts with noac. So, where this (using an automounted path): cd /h/spo/work make -j 5 would be slow. This (using a non-automounted path): cd /home/spo/work make -j 5 showed the faster performance I was expecting. I will mark my bug as invalid and decide what, if anything, I want to do about amd. Thanks for pointing me in the right direction. Steven