From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH 3/3] pkt_sched: restore multiqueue prio scheduler Date: Sat, 23 Aug 2008 01:15:46 -0700 (PDT) Message-ID: <20080823.011546.127201278.davem@davemloft.net> References: <5f2db9d90808221701t4c576282m34a46999b76b6e83@mail.gmail.com> <20080822.174032.117057862.davem@davemloft.net> <5f2db9d90808221837h2f727478qf78bb6e6a2867802@mail.gmail.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: jarkao2@gmail.com, hadi@cyberus.ca, jeffrey.t.kirsher@intel.com, jeff@garzik.org, netdev@vger.kernel.org, alexander.h.duyck@intel.com To: alexander.duyck@gmail.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:42423 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1750787AbYHWIPr (ORCPT ); Sat, 23 Aug 2008 04:15:47 -0400 In-Reply-To: <5f2db9d90808221837h2f727478qf78bb6e6a2867802@mail.gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: From: "Alexander Duyck" Date: Fri, 22 Aug 2008 18:37:51 -0700 > I thought about doing just that but then I realized that there would > be a number of issues. > > First if I just set the skb->queue_mapping for the packet without > moving it to a qdisc dedicated to that tx queue I run into > head-of-line issues since multiple qdiscs will stop if holding packets > for a single tx queue that is full. That is over come in this patch > by the fact that each qdisc has a specific fifo per tx queue. Such fifos could be configured using 'tc' commands just as easily. Look, I know what you're trying to do is possible with at best minor tweaks. So don't press your luck listing how impossible it is :-)