From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: ixgbe question Date: Mon, 23 Nov 2009 13:28:23 -0800 (PST) Message-ID: <20091123.132823.162855593.davem@davemloft.net> References: <19210.54486.353397.804028@gargle.gargle.HOWL> <4B0ABF6D.9000103@gmail.com> <19210.63123.814368.292600@gargle.gargle.HOWL> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: eric.dumazet@gmail.com, hawk@diku.dk, peter.p.waskiewicz.jr@intel.com, netdev@vger.kernel.org To: robert@herjulf.net Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:43644 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755098AbZKWV2F (ORCPT ); Mon, 23 Nov 2009 16:28:05 -0500 In-Reply-To: <19210.63123.814368.292600@gargle.gargle.HOWL> Sender: netdev-owner@vger.kernel.org List-ID: From: robert@herjulf.net Date: Mon, 23 Nov 2009 21:54:43 +0100 > Something mysterious or very obvious... It seem very obvious to me that, for whatever reason, the MSI-X vectors are only being sent to cpu 1 on Eric's system. I also suspect, as a result, that it has nothing to do with the IXGBE driver but rather is some IRQ controller programming or some bug or limitation in the IRQ affinity mask handling in the kernel.