From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757551AbZBPNBW (ORCPT ); Mon, 16 Feb 2009 08:01:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755860AbZBPNBN (ORCPT ); Mon, 16 Feb 2009 08:01:13 -0500 Received: from welcomes-you.com ([85.214.50.128]:33371 "EHLO smtp.welcomes-you.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755667AbZBPNBM (ORCPT ); Mon, 16 Feb 2009 08:01:12 -0500 Message-ID: <49996380.1090902@aei.mpg.de> Date: Mon, 16 Feb 2009 14:00:48 +0100 From: Carsten Aulbert User-Agent: Mozilla-Thunderbird 2.0.0.19 (X11/20090103) MIME-Version: 1.0 To: Trond Myklebust CC: linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org, beowulf@beowulf.org Subject: Re: Tracing down 250ms open/chdir calls References: <49991BE7.1090104@aei.mpg.de> <1234788998.7708.40.camel@heimdal.trondhjem.org> In-Reply-To: <1234788998.7708.40.camel@heimdal.trondhjem.org> X-Enigmail-Version: 0.95.7 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Trond, Trond Myklebust schrieb: > 2.6.27.7 has a known NFS client performance bug due to a change in the > authentication code. The fix was merged in 2.6.27.9: see the commit > http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.27.y.git&a=commitdiff&h=a0f04d0096bd7edb543576c55f7a0993628f924a Maybe that's also a reason why we don't see it that often anymore - although the user load has shifted a bit also. We are running 2.7.27.14 (and .15 since Friday). Thanks for letting me know, I'll probably re-run the tests again with a newer kernel. Cheers Carsten