Re: [LARTC] pfifo scheduler

Linux Advanced Routing and Traffic Control

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I'm using successfully all kinds of qdiscs, but i cannot find a solution
to limit number of packets in one flow. Is there a way to do this with
cbq, htb or tbf ? Not bandwidth in bits per second, but packets per
second.

Thanks,

-- Nikolay Datchev

On Sat, 21 Jun 2003, Stef Coene wrote:

> On Saturday 21 June 2003 14:56, Nikolay Datchev wrote:
> > Hello ppl,
> >
> > I'm playing with the pfifo scheduler, its simple, and i cannot understand
> > what's wrong. So, i have test machine, with one interface eth0, and i want
> > to send no more than 3 packets/sec out of that interface, so i do:
> >
> > tc qdisc add dev eth0 root pfifo limit 3
> >
> > And i get pfifo scheduler on eth0 with limit of 3, but it sends as many
> > packets per second as it wants, without delay or drop. How can i get it
> > throttle if sended more than N packets/sec ?
> You can't do this with the pfifo qdisc.  You only create a pfifo qdisc that
> can hold 3 packets.  But that does not mean that it will send 3 packets /
> seconds.
> Take a look at the htb, cbq or tbf qdisc for limiting bandwidth.
>
> Stef
>
> --
>
> stef.coene@xxxxxxxxx
>  "Using Linux as bandwidth manager"
>      http://www.docum.org/
>      #lartc @ irc.oftc.net
>
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