From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eldon Koyle Subject: Re: ixgbe RSS not working as expected with 8021q and bridging Date: Tue, 15 Dec 2009 10:21:19 -0700 Message-ID: <20091215172119.GF20231@esk.cs.usu.edu> References: <20091210231103.GA20231@esk.cs.usu.edu> <4B218E36.4030808@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: netdev@vger.kernel.org To: Eric Dumazet Return-path: Received: from esk.cs.usu.edu ([129.123.28.15]:50069 "EHLO esk.cs.usu.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754636AbZLORVU (ORCPT ); Tue, 15 Dec 2009 12:21:20 -0500 Content-Disposition: inline In-Reply-To: <4B218E36.4030808@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: On Dec 11 1:11+0100, Eric Dumazet wrote: > Le 11/12/2009 00:11, Eldon Koyle a =E9crit : > > We have built a firewall with two 10 Gbit interfaces (intel 82598EB= ) and > > are doing some testing. A simple bridge between the two interfaces= acts > > as expected with packets being distributed fairly evenly across all= of > > the rx/tx queues. > >=20 > > We then switched to tagged vlans on both interfaces (10 vlans each,= 8 > > source and 8 dest addresses per vlan) and bridged eth0.N to eth1.N,= and > > many of our queues (and CPUs) remained idle, and all of our VLAN tr= affic > > went out on the same tx queue. Are multiple transmit queues suppor= ted > > with 802.1q? How do we figure out what is causing some of our rece= ive > > queues to be unused? > >=20 > > We are using 2.6.31 (from Debian) and ixgbe-2.0.44.14 . > >=20 >=20 > You need more recent kernel (2.6.32) to get multi queue support on vl= ans, sorry. Excellent. 2.6.32 solved half of the problem. Now, we are using the same number of rx and tx queues. We are still seeing no packets on 3 o= f our 8 rx queues on each interface, though (no packets on 2, 4 or 6). Does the card assign queues in hardware, or is that handled by the kernel? --=20 Eldon Koyle