From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarek Poplawski Subject: Re: [PATCH iproute2] Re: HTB accuracy for high speed Date: Tue, 19 May 2009 11:28:28 +0000 Message-ID: <20090519112828.GA6918@ff.dom.local> References: <20090517201528.GA8552@ami.dom.local> <200905191404.50464.denys@visp.net.lb> <20090519111857.GC5521@ff.dom.local> <200905191421.28519.denys@visp.net.lb> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Antonio Almeida , Stephen Hemminger , netdev@vger.kernel.org, kaber@trash.net, davem@davemloft.net, devik@cdi.cz, Eric Dumazet To: Denys Fedoryschenko Return-path: Received: from rv-out-0506.google.com ([209.85.198.239]:60223 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752713AbZESL2h (ORCPT ); Tue, 19 May 2009 07:28:37 -0400 Received: by rv-out-0506.google.com with SMTP id f9so1821771rvb.1 for ; Tue, 19 May 2009 04:28:37 -0700 (PDT) Content-Disposition: inline In-Reply-To: <200905191421.28519.denys@visp.net.lb> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, May 19, 2009 at 02:21:28PM +0300, Denys Fedoryschenko wrote: > On Tuesday 19 May 2009 14:18:57 Jarek Poplawski wrote: > > > > Sure, if the queue is too short we could have a problem with reaching > > the expected rate; but here it's all backwards - it could actually > > "help" with the stats. ;-) > > > > Jarek P. > Well, i had real experience on HTB, when i set too short buffers on my QoS > qdiscs, the incoming rate jumped too high than overall. When i set larger > buffers (and by the way dropped sfq and use bfifo) - it is dropped. No idea > why, bug or specific things in protocols congestion control. Maybe worth to > try... > Very strange. Anyway, "overlimits 0" suggests HTB always got packets when it needed... Jarek P.