From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750905AbWDXQnS (ORCPT ); Mon, 24 Apr 2006 12:43:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750901AbWDXQnS (ORCPT ); Mon, 24 Apr 2006 12:43:18 -0400 Received: from fmr17.intel.com ([134.134.136.16]:54998 "EHLO orsfmr002.jf.intel.com") by vger.kernel.org with ESMTP id S1750897AbWDXQnR (ORCPT ); Mon, 24 Apr 2006 12:43:17 -0400 Message-ID: <444CFFE5.1020509@intel.com> Date: Mon, 24 Apr 2006 09:42:13 -0700 From: Auke Kok User-Agent: Mail/News 1.5 (X11/20060417) MIME-Version: 1.0 To: Ingo Oeser CC: =?ISO-8859-1?Q?J=F6rn_Engel?= , Ingo Oeser , "David S. Miller" , simlo@phys.au.dk, linux-kernel@vger.kernel.org, mingo@elte.hu, netdev@vger.kernel.org Subject: Re: Van Jacobson's net channels and real-time References: <200604221529.59899.ioe-lkml@rameria.de> <20060422134956.GC6629@wohnheim.fh-wedel.de> <200604230205.33668.ioe-lkml@rameria.de> In-Reply-To: <200604230205.33668.ioe-lkml@rameria.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ingo Oeser wrote: > On Saturday, 22. April 2006 15:49, Jörn Engel wrote: >> That was another main point, yes. And the endpoints should be as >> little burden on the bottlenecks as possible. One bottleneck is the >> receive interrupt, which shouldn't wait for cachelines from other cpus >> too much. > > Thats right. This will be made a non issue with early demuxing > on the NIC and MSI (or was it MSI-X?) which will select > the right CPU based on hardware channels. MSI-X. with MSI you still have only one cpu handling all MSI interrupts and that doesn't look any different than ordinary interrupts. MSI-X will allow much better interrupt handling across several cpu's. Auke