From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: RE: Low performance Intel 10GE NIC (3.2.10) on 2.6.38 Kernel Date: Thu, 14 Apr 2011 08:07:31 +0200 Message-ID: <1302761251.3549.198.camel@edumazet-laptop> References: <1302167168.3357.12.camel@edumazet-laptop> <1302176811.3357.15.camel@edumazet-laptop> <4D9DDF43.9080302@intel.com> <1302192218.3357.47.camel@edumazet-laptop> <4D9DE465.1080008@intel.com> <1302253651.4409.2.camel@edumazet-laptop> <1302267400.4409.22.camel@edumazet-laptop> <1302275223.4409.36.camel@edumazet-laptop> <1302330998.2656.113.camel@edumazet-laptop> <4DA3151B.4030507@intel.com> <1302536577.4605.1.camel@edumazet-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Alexander Duyck , Peter Zijlstra , netdev , "Kirsher, Jeffrey T" To: Wei Gu Return-path: Received: from mail-ww0-f44.google.com ([74.125.82.44]:50308 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756410Ab1DNGHg (ORCPT ); Thu, 14 Apr 2011 02:07:36 -0400 Received: by wwa36 with SMTP id 36so1590433wwa.1 for ; Wed, 13 Apr 2011 23:07:35 -0700 (PDT) In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: Le jeudi 14 avril 2011 =C3=A0 13:42 +0800, Wei Gu a =C3=A9crit : > Hi guys, > Do you think it was a bug in the kernel from 2.6.35.2 with Intel 10GE= ixgbe driver? > If so shall I issue a Bug on the bugzilla, and which category? Cause = I'm not sure it was driver problem Or sched problem. This makes no sense to me. What is the maximum throughput you can get in pps before having packet drops ? Please try with a single flow (to hit one queue, one cpu) Thanks =20