Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932423Ab0LHBwn (ORCPT ); Tue, 7 Dec 2010 20:52:43 -0500 Received: from mail-iw0-f172.google.com ([209.85.214.172]:38651 "EHLO mail-iw0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932068Ab0LHBwk (ORCPT ); Tue, 7 Dec 2010 20:52:40 -0500 X-Greylist: delayed 492 seconds by postgrey-1.27 at vger.kernel.org; Tue, 07 Dec 2010 20:52:40 EST DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=i8T2WKf27T8YDKJivVdBGDz0uSjunCwl5M8LiQR0dxn/lTr2S/q6Yb0rlOj5PE5pm/ rNfcwyGVzPxo4bie0WdBzHrTSG2L6Zuj9a0ROwxAhPEt18h00lt9s2aUJOngINdlxGt/ klya/alBlPn2CA0HIzoQorEAMcntOCyS0crl8= Message-ID: <4CFEE2F9.90600@gmail.com> Date: Tue, 07 Dec 2010 19:44:25 -0600 From: Robert Hancock User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.12) Gecko/20101103 Fedora/1.0-0.33.b2pre.fc14 Thunderbird/3.1.6 MIME-Version: 1.0 To: =?UTF-8?B?UGF3ZcWCIFNpa29yYQ==?= CC: Linux Kernel Mailing List Subject: Re: [2.6.36.1] IGB driver handles all ethX interrupts on single cpu core. References: <201012071906.47161.pluto@agmk.net> In-Reply-To: <201012071906.47161.pluto@agmk.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 704 Lines: 18 On 12/07/2010 12:06 PM, Paweł Sikora wrote: > hi, > > i'm currently testing a new server with 2x opteron-6128 with dual gigabit port > and observing that the igb driver uses only single core for all ethX interrupts. > is it a correct behaviour for this driver? > > BR, > Pawel. The CPU affinity for the IRQ isn't really under the driver's control. It looks like all your interrupts are being handled on CPU0. You likely need to run the irqbalance daemon. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/