From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Nelson Subject: Re: stable 10GBE under 3.4.2 or 3.5.0-rc2 Date: Mon, 18 Jun 2012 08:56:36 -0500 Message-ID: <4FDF3394.3000107@inktank.com> References: <4FDEDB7F.4070600@profihost.ag> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-gg0-f174.google.com ([209.85.161.174]:60712 "EHLO mail-gg0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750756Ab2FRN4j (ORCPT ); Mon, 18 Jun 2012 09:56:39 -0400 Received: by gglu4 with SMTP id u4so3656558ggl.19 for ; Mon, 18 Jun 2012 06:56:38 -0700 (PDT) In-Reply-To: <4FDEDB7F.4070600@profihost.ag> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Stefan Priebe - Profihost AG Cc: "ceph-devel@vger.kernel.org" On 6/18/12 2:40 AM, Stefan Priebe - Profihost AG wrote: > Hi list, > > i've still problems with stable network speed under recent kernels. With > 3.0.32 i get stable 9.90 Gbit/s in both directions. With 3.4.2 or > 3.5.0-rc2 it drops sometimes down to around 1 Gbit/s. Sadly i've no idea > when this happen? It works sometimes for minutes at 9.9Gbit/s and then > suddently only with 3-4Gbit/s or even 1Gbit/s using recent kernels. > > I'm using various tunings recommanded by intel (Improving Performance) > => http://downloadmirror.intel.com/5874/eng/README.txt > Hi Stefan, Did you ever get a chance to talk to Jason Wang about the commit that was causing the problems? It might be a good idea to report all of this upstream and see what they have to say. Mark