Return-path: Received: from sj-iport-2.cisco.com ([171.71.176.71]:48907 "EHLO sj-iport-2.cisco.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761054AbYGRRKY (ORCPT ); Fri, 18 Jul 2008 13:10:24 -0400 From: Roland Dreier To: hadi@cyberus.ca Cc: Patrick McHardy , David Miller , netdev@vger.kernel.org, johannes@sipsolutions.net, linux-wireless@vger.kernel.org Subject: Re: [PATCH 20/31]: pkt_sched: Perform bulk of qdisc destruction in RCU. References: <487F4327.1000107@trash.net> <1216301732.4726.26.camel@localhost> <487F50EC.80008@trash.net> <20080717.152447.89672084.davem@davemloft.net> <487FDA67.30902@trash.net> <1216386624.4833.94.camel@localhost> Date: Fri, 18 Jul 2008 10:10:21 -0700 In-Reply-To: <1216386624.4833.94.camel@localhost> (jamal's message of "Fri, 18 Jul 2008 09:10:24 -0400") Message-ID: (sfid-20080718_191037_439223_827FADD3) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-wireless-owner@vger.kernel.org List-ID: > The question is whether the packets sitting on the fifo qdisc are being > sorted fairly when congestion kicks in. Remember there is still a single > wire still even on multiple rings;-> This is definitely true, but it is good to keep in mind that in the near future we will start to see things look a little like multiple "virtual wires." This is because of new ethernet standards like per-priority pause, which makes it possible that one hardware ring on a NIC can transmit while another ring is paused (possibly because of congestion far off in the network). - R.