Re: [LARTC] Latency in SFQ

Linux Advanced Routing and Traffic Control

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> > I tried to use SFQ, but the latency goes up to 10.000 to 20.000 
> > milisecond in case of overloaded.
>
> SFQ is no substitute for prioritization, but this is ridiculous. Can you
> show the output of cbq.init? You can do this by looking into the script and
> turning the logfile on.
>
> I think cbq.init is misconfiguring things.
When I started with TC, I also tried the cbq.init script.  It's very limited 
in what you can do.  Once you know TC, you will realize that cbq.init is too 
limited and that's doing some things wrong because the situation is much more 
complicated.

An example.  You can select tbf as a leaf qfdisc for a cbq class.  But the 
qdisc is allready shaping, so attaching a tbf qdisc is not needed.  It can 
disturb the setup and can result in some strange behaviour.

Stef


-- 

stef.coene@xxxxxxxxx
 More QOS info : http://docum.org/
 Title : "Using Linux as bandwidth manager"
     



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