From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Furniss Date: Sat, 17 Dec 2016 10:56:56 +0000 Subject: Re: Problem to priorize SSH traffic Message-Id: <585519F8.4080006@gmail.com> List-Id: References: <1737987792.142216491.1481907014295.JavaMail.root@zimbra45-e7.priv.proxad.net> In-Reply-To: <1737987792.142216491.1481907014295.JavaMail.root@zimbra45-e7.priv.proxad.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lartc@vger.kernel.org Alan Goodman wrote: > Hi, > > The obvious issue at present is that your upload rate isnt hitting > the ceiling rate you have specified, or at least the rate estimator > doesnt think it is. This could be because you've set your upload > incorrectly (what is your sync speed) or could be because you are not > accounting for the overheads and ATM characteristics in your > connection (makes the rate estimator inaccurate). > > You should try adding stab overhead 40 linklayer atm to your root > qdisc. > > The overhead 40 bit will be whatever number > https://github.com/moeller0/ATM_overhead_detector figures out for > you. Just in case that just reveals the fixed overhead on IP, on eth tc sees ip + 14 already, so you can subtract 14, which for ipoa or pppoa vcmux means you should use a negative overhead.