netdev - Re: pkt_sched: add DRR scheduler, any idea how to use it?

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Date:	Fri, 27 Feb 2009 10:51:02 +0000
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Denys Fedoryschenko <denys@...p.net.lb>
Cc:	netdev@...r.kernel.org
Subject: Re: pkt_sched: add DRR scheduler, any idea how to use it?

On 26-02-2009 17:26, Denys Fedoryschenko wrote:
> I tried
> 
> c qdisc add dev ifb0 handle 1 root htb
> 
> tc class add dev ifb0 classid 1:100 parent 1:0 htb rate 100Kbit ceil 100Kbit
> tc qdisc add dev ifb0 parent 1:100 handle 2 drr
> 
> Packets directed by filter to 1:100, all gots dropped. And even i am adding
> tc class add dev ifb0 parent 2:0 classid 2:1 drr quantum 16384
> 
> or 
> 
> tc class add dev ifb0 parent 2:0 classid 2:0 drr quantum 16384
> 
> or 
> 
> tc class add dev ifb0 parent 2:0 classid 2:1 drr quantum 16384
> tc qdisc add dev ifb0 parent 2:1 handle 3 bfifo limit 10000
> 
> 
> Always it is 
> qdisc drr 2: parent 1:100
>  Sent 0 bytes 0 pkt (dropped 32, overlimits 0 requeues 0)
>  rate 0bit 0pps backlog 0b 0p requeues 0
> 
> Any simple example how to use it?

Something like above plus filters to these classes, so similarly to
HFSC or HTB (but no defaults). You could try to simulate sch_sfq()
behaviour using cls_flow (one class per flow).

Jarek P.
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