From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ludovic Leroy Date: Sat, 17 Dec 2016 14:50:45 +0000 Subject: Re: Problem to priorize SSH traffic Message-Id: <585550C5.1040703@free.fr> 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="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: lartc@vger.kernel.org Andy, ip + 14? How do you get this result? Thank you. Ludovic Le 17/12/2016 11:56, Andy Furniss a =C3=A9crit : > 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.