From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe - Profihost AG Subject: stable 10GBE under 3.4.2 or 3.5.0-rc2 Date: Mon, 18 Jun 2012 09:40:47 +0200 Message-ID: <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.profihost.ag ([85.158.179.208]:48892 "EHLO mail.profihost.ag" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751185Ab2FRHku (ORCPT ); Mon, 18 Jun 2012 03:40:50 -0400 Sender: ceph-devel-owner@vger.kernel.org List-ID: To: "ceph-devel@vger.kernel.org" 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 Has anybody a hint for me or additional settings intel does not mention? Stefan