From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Furniss Subject: Re: [NET_SCHED 00/04]: External SFQ classifiers/flow classifier Date: Wed, 02 Apr 2008 12:42:49 +0100 Message-ID: <47F37139.9080303@andyfurniss.entadsl.com> References: <20080131175758.25151.20370.sendpatchset@localhost.localdomain> <47A4FB81.80700@fatooh.org> <47A74FEE.6080103@trash.net> <47EED247.50801@andyfurniss.entadsl.com> <47F22CF5.4080806@trash.net> <47F28758.1010401@andyfurniss.entadsl.com> Reply-To: lists@andyfurniss.entadsl.com Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Patrick McHardy , Corey Hickey , Linux Netdev List To: lists@andyfurniss.entadsl.com Return-path: Received: from mx1.ukfsn.org ([77.75.108.10]:57310 "EHLO mail.ukfsn.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752902AbYDBLlh (ORCPT ); Wed, 2 Apr 2008 07:41:37 -0400 In-Reply-To: <47F28758.1010401@andyfurniss.entadsl.com> Sender: netdev-owner@vger.kernel.org List-ID: Andy Furniss wrote: > It's cool being able to see the sfq flows. It's also interesting to notice that allot varies so much. I have seen +/- 10 * my quantum which I didn't expect, I wonder if it needs to be cleared when a flow empties or something. The source for sfq is a bit hard to follow so I don't really know what's happening. I was dropping with limit of 40 (about a second at my rate) and had quite a few connections active, hashing on dst. tcpdump also shows that single flows are getting 3/4/5 packets dequeued in a row when there are other flows active. I guess it's hard to tell the state at any one instant when dropping and making flows dis/reappear but it does seem to behave in a way that amplifies burstyness. My quantum = mtu + 14 and there are no giants. Andy.