From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-x232.google.com (mail-wi0-x232.google.com [IPv6:2a00:1450:400c:c05::232]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id F40ED21FC0E for ; Fri, 10 Jul 2015 08:19:52 -0700 (PDT) Received: by wicmz13 with SMTP id mz13so16424692wic.0 for ; Fri, 10 Jul 2015 08:19:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:to:references:from:cc:message-id:date:user-agent :mime-version:in-reply-to:content-type:content-transfer-encoding; bh=JPeVH3qLPEl9ZfZtCv/j8Ggk8jOTBtYQnQCUcYL36vI=; b=zHKlh9IXST7lDxDbwTj0yMkATGs9OpvTX5v1jPvJM/jeSciBD3T/n/+bqFhEazCGzi xTEP540LeDRj1WaBtUgaWbTdCxHMtMDlNFymEjyrmKezirwYqPg47+2t/nBaoeXb3r6o A2I2+yZpN2ZknOwJ8QqiNJdnCCQ29ood94wZxNvRWPQCiWqr4943o9Oi4yW7bQoFspLU 0PDiBb0kHGsrEzPlyKjvvJKZE+KbovPLBsudreIkfuiHdYbpzpSrBccIcx4vGXY/1JB7 IotnwV5ckceQoGfqodMBoQTdbq4aX7tJvAewAMofeyyCaGzyKLJumoESoBgYr/EZwyBr 5s/A== X-Received: by 10.194.110.100 with SMTP id hz4mr42372421wjb.6.1436541590561; Fri, 10 Jul 2015 08:19:50 -0700 (PDT) Received: from volcano.localdomain (host-89-243-101-54.as13285.net. [89.243.101.54]) by smtp.googlemail.com with ESMTPSA id lj14sm3376285wic.18.2015.07.10.08.19.49 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 10 Jul 2015 08:19:49 -0700 (PDT) To: Fred Stratton , cerowrt-devel@lists.bufferbloat.net References: <559FA8D4.2030305@imap.cc> <559FDC38.9010400@imap.cc> From: Alan Jenkins Message-ID: <559FE294.60801@gmail.com> Date: Fri, 10 Jul 2015 16:19:48 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.0.1 MIME-Version: 1.0 In-Reply-To: <559FDC38.9010400@imap.cc> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Cc: Jonathan Morton Subject: Re: [Cerowrt-devel] Correct syntax for cake commands and atm issues. X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Jul 2015 15:20:21 -0000 I'm glad to hear there's a working version (even if it's not in the current build :). Do you have measurable improvements with overhead configured (v.s. unconfigured)? I've used netperfrunner from CeroWrtScripts, e.g. sh netperfrunner.sh -H netperf-eu.bufferbloat.net -p $ISP_ROUTER I believe accounting for overhead helps on this two-way test, because a) it saturates the uplink b) about half that bandwidth is tiny ack packets (depending on bandwidth asymmetry). And small packets have proportionally high overhead. (But it seems to only make a small difference for me, which always surprises Seb). Alan On 10/07/15 15:52, Fred Stratton wrote: > > You are absolutely correct. > > I tried both a numeric overhead value, and alternatively 'pppoe-vcmux' > and 'ether-fcs' in the build I crafted based on r46006, which is lupin > undeclared version 2. Everything works as stated. > > On lupin undeclared version 4, the current release based on r46117, the > values were not recognised. > > Thank you. > > I had cake running on a Lantiq ADSL gateway running the same r46006 > build. Unfortunately this was bricked by attempts to get homenet > working, so I have nothing to report about gateway usage at present. > > > > On 10/07/15 13:57, Jonathan Morton wrote: >> >> You're already using correct syntax - I've written it to be quite >> lenient and use sensible defaults for missing information. There are >> several sets of keywords and parameters which are mutually orthogonal, >> and don't depend on each other, so "besteffort" has nothing to do with >> "overhead" or "atm". >> >> What's probably happening is that you're using a slightly old version >> of the cake kernel module which lacks the overhead parameter entirely, >> but a more up to date tc which does support it. We've seen this >> combination crop up ourselves recently. >> >> - Jonathan Morton >> >