From mboxrd@z Thu Jan 1 00:00:00 1970 From: jamal Subject: Re: [PATCH] NET: Multiqueue network device support. Date: Thu, 07 Jun 2007 18:26:43 -0400 Message-ID: <1181255204.4071.31.camel@localhost> References: <1181168020.4064.46.camel@localhost> <20070606.153530.48530367.davem@davemloft.net> <1181172766.4064.83.camel@localhost> <20070606.165215.38711917.davem@davemloft.net> <20070607004712.GE3304@havoc.gtf.org> <1181219380.4064.55.camel@localhost> <46681E41.6060700@intel.com> <1181253445.4071.4.camel@localhost> <46688169.8080806@intel.com> Reply-To: hadi@cyberus.ca Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: Jeff Garzik , David Miller , kaber@trash.net, peter.p.waskiewicz.jr@intel.com, netdev@vger.kernel.org, Jesse Brandeburg To: "Kok, Auke" Return-path: Received: from ag-out-0708.google.com ([72.14.246.246]:19880 "EHLO ag-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935930AbXFGW0s (ORCPT ); Thu, 7 Jun 2007 18:26:48 -0400 Received: by ag-out-0708.google.com with SMTP id 35so529872aga for ; Thu, 07 Jun 2007 15:26:47 -0700 (PDT) In-Reply-To: <46688169.8080806@intel.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Thu, 2007-07-06 at 15:06 -0700, Kok, Auke wrote: > the contention isn't between multiple tx attempts, but between e1000_clean and > tx. I got you the first time but i think i am missing something: given that the lock is used only on tx - how is that protecting the contention between tx and rx? > You'll need bidirectional traffic with multiple clients probably to hit it... I did - but it was asymettric i.e very heavy on tx. cheers, jamal