From mboxrd@z Thu Jan 1 00:00:00 1970 From: Patrick McHardy Subject: Re: [PATCH iproute2] Re: HTB accuracy for high speed Date: Tue, 02 Jun 2009 15:20:20 +0200 Message-ID: <4A252714.2020008@trash.net> References: <298f5c050905221042t45017c5q8bc967d13c9b81cb@mail.gmail.com> <20090523073201.GA2766@ami.dom.local> <298f5c050905281113o10393c61ye3c0539d2b6efa20@mail.gmail.com> <20090528211258.GA3658@ami.dom.local> <298f5c050905291002j468aa6e6j9a28252507717660@mail.gmail.com> <20090530200756.GF3166@ami.dom.local> <298f5c050906020312r514c4638sfa2b504f55d71bc1@mail.gmail.com> <298f5c050906020445n3941b4ceic1167a4a028005bf@mail.gmail.com> <20090602123635.GC4239@ff.dom.local> <4A251EEE.4060903@trash.net> <20090602130857.GA7690@ff.dom.local> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Cc: Antonio Almeida , Stephen Hemminger , netdev@vger.kernel.org, davem@davemloft.net, devik@cdi.cz, Eric Dumazet , Vladimir Ivashchenko To: Jarek Poplawski Return-path: Received: from stinky.trash.net ([213.144.137.162]:39402 "EHLO stinky.trash.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753912AbZFBNUV (ORCPT ); Tue, 2 Jun 2009 09:20:21 -0400 In-Reply-To: <20090602130857.GA7690@ff.dom.local> Sender: netdev-owner@vger.kernel.org List-ID: Jarek Poplawski wrote: > On Tue, Jun 02, 2009 at 02:45:34PM +0200, Patrick McHardy wrote: >> I didn't follow the full discussion, so I'm not sure which kind of >> arithmetic error you're attempting to cure. For the HFSC scaling >> factors, please just keep in mind that its also supposed to be >> very accurate at low bandwidths. > > It's all here: > > http://permalink.gmane.org/gmane.linux.network/129301 I've read through the mails where you suggested to change the scaling factors. I wasn't able to find the reasoning (IOW: where does it overflow or loose precision in which case) though. > Of course, I'd appreciate any suggestions. The HFSC shifts would indeed need adjustments if the US<->NS conversion factor were to change.