From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rick Jones Subject: Re: [PATCH] Disable TSO for non standard qdiscs Date: Fri, 01 Feb 2008 13:58:30 -0800 Message-ID: <47A39606.4090401@hp.com> References: <20080131124632.GA25299@basil.nowhere.org> <47A212CB.1060403@hp.com> <20080131190326.GF4671@one.firstfloor.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, davem@davemloft.net To: Andi Kleen Return-path: Received: from g5t0008.atlanta.hp.com ([15.192.0.45]:46754 "EHLO g5t0008.atlanta.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755452AbYBAV6d (ORCPT ); Fri, 1 Feb 2008 16:58:33 -0500 In-Reply-To: <20080131190326.GF4671@one.firstfloor.org> Sender: netdev-owner@vger.kernel.org List-ID: >>Does this also imply that JumboFrames interacts badly with these qdiscs? >> Or IPoIB with its 65000ish byte MTU? > > > Correct. Of course it is always relative to the link speed. So if your > link is 10x faster and your packets 10x bigger you can get similarly > smooth shaping. If the later-in-thread mentioned person shaping for their DSL line happens to have enabled JumboFrames on their GbE network, will/should the qdisc negate that? Or is the qdisc currently assuming that the remote end of the DSL will have asked for a smaller MSS? rick jones