From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: e1000 performance issue in 4 simultaneous links Date: Fri, 11 Jan 2008 17:41:09 -0800 (PST) Message-ID: <20080111.174109.57502326.davem@davemloft.net> References: <36D9DB17C6DE9E40B059440DB8D95F5204275B04@orsmsx418.amr.corp.intel.com> <20080110.172830.16409182.davem@davemloft.net> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: benny+usenet@amorsen.dk Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:35635 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1757175AbYALBlJ (ORCPT ); Fri, 11 Jan 2008 20:41:09 -0500 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: From: Benny Amorsen Date: Fri, 11 Jan 2008 12:09:32 +0100 > David Miller writes: > > > No IRQ balancing should be done at all for networking device > > interrupts, with zero exceptions. It destroys performance. > > Does irqbalanced need to be taught about this? The userland one already does. It's only the in-kernel IRQ load balancing for these (presumably powerpc) platforms that is broken.