From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stef Coene Date: Mon, 02 Sep 2002 18:50:56 +0000 Subject: Re: [LARTC] HTB shares equally when borrowing enabled :( Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: lartc@vger.kernel.org On Monday 02 September 2002 13:24, Tak=E1cs B=E1lint wrote: > Thanks Stef! The trick with setting lower maximum bandwidth works. I > convinced me that I understand now what happens :) The ISP starts to > build queues when maximal input rate is reached and releases packets > from these queues equally. Thus the prioritized connections had to wait > sometimes and it lends its guaranteed bw instead of waiting. > > I had to set the ceil to as low as 50 kbps (!). My usual maximal > throughput rate is about 55 kb/sec, while my ISP says the maximal input > rate is 512 kbit/sec. I always assigned the difference to IP > administration. Now, the maximal throughput seems to not drop until > ceil is lowered below 55 kbps. Thus I assume the rates calculated by HTB > measure the REAL throughput without IP administration. Is it true? HTB measures each bit that's sended. So all ip-overhead included. > Sometimes the maximal input rate drops (damn ISP) and it seems to enable > small "bursts" with high throughputs. Does it mean that I should to > decrease/increase the ceil when it happens? I think it depends on the > ISP queues: if they start to build, then I must. It can mean that I > can't use traffic shaping, or at least not HTB qdisc - maybe some prio > setup will do the job. You can use traffic shaping for the moments the traffic is not dropped. If= =20 you know exactly how the bursts are, you can try to enable the same bursts = with htb. > What if I try to shape the outgoing traffic? Maybe it has an effect on > incoming, too. I mean if "acknowledged" information goes back slow, I > can manipulate the ISP queues, hm? It can affect incoming traffic, but I think the effect will be allmost=20 neglectable. Stef --=20 stef.coene@docum.org "Using Linux as bandwidth manager" http://www.docum.org/ #lartc @ irc.oftc.net _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/