From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Wang Subject: Re: surprising memory request Date: Mon, 21 Jan 2013 13:23:24 +0800 Message-ID: <50FCD0CC.2010009@redhat.com> References: <20130118085818.147220.FMU5901@air.gr8dns.org> <1358531190.11051.402.camel@edumazet-glaptop> <1358531946.2397.265.camel@shinybook.infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: Eric Dumazet , Dirk Hohndel , netdev@vger.kernel.org To: David Woodhouse Return-path: Received: from mx1.redhat.com ([209.132.183.28]:54831 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750915Ab3AUFXc (ORCPT ); Mon, 21 Jan 2013 00:23:32 -0500 In-Reply-To: <1358531946.2397.265.camel@shinybook.infradead.org> Sender: netdev-owner@vger.kernel.org List-ID: On 01/19/2013 01:59 AM, David Woodhouse wrote: > On Fri, 2013-01-18 at 09:46 -0800, Eric Dumazet wrote: >> #define MAX_TAP_QUEUES 1024 >> >> Thats crazy if your machine has say 8 cpus. > Even crazier if your userspace is never going to *use* MQ. Can't we > default to one queue unless userspace explicitly requests more? > Yes, if userspace never use MQ, we just use a one queue netdevice. Just draft a patch fro Dirk to test. Thanks