From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Furniss Date: Sun, 30 May 2004 07:49:52 +0000 Subject: Re: [LARTC] HTB MPU Message-Id: <40B99220.1040506@dsl.pipex.com> List-Id: References: <40A37E1B.8060604@dsl.pipex.com> In-Reply-To: <40A37E1B.8060604@dsl.pipex.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lartc@vger.kernel.org Ed Wildgoose wrote: > >> >> Reading your other post I see your small traffic is ~100b - this would >> use three cells, so as a temporary kludge you could set your mpu to >> 159 and see how it goes. >> >> AFAIK the author of the HTB patch is looking into modifying it to do >> the sums properly for DSL. There isn't one answer though - Eds' >> formula is fine doing the cells bit, but before this you need to add a >> ppp overhead to the IP packet length and this varies with pppoa+vc >> mux/pppoe/bridged pppoe and probably other varieties of dsl >> implementations. > > > > I think he said that he is on BT atm based adsl? Can we perhaps tweak > that formula (which is already hardwired) and try to get him something > useful. It sounds like it would be a good vindication for the technique > and if it works then we can retro fit it to some modular params which > work for more people. Can't be any worse than the current patch which > already doesn't help most adsl users completely... > In other words, how would I calc the overhead for BT's ppp system? > Happy to help write the patch if you can supply the info See my post to Jason - I think it should be doable, I was just waiting to see if it got put into the patch - as the author knows the code and has done most of the work already. Andy. _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/