RE: CBQ Rate

Linux Advanced Routing and Traffic Control

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It is me again.
is there nos a trouble in my script :
" ... rate 5Mbit weight 0.3 ..." --> is it compatible ??

Thanks again

> -----Message d'origine-----
> De : lartc-admin@xxxxxxxxxxxxxxx
> [mailto:lartc-admin@xxxxxxxxxxxxxxx]De
> la part de Emmanuel SIMON
> Envoyé : jeudi 4 septembre 2003 17:40
> À : 'LARTC'
> Objet :  CBQ Rate
>
>
> Hi everyone,
>
> This is on a linux box, ingress (eth1) at 100Mb/s and egress (eth0) at
> 10Mb/s. The purpose is to test CBQ
> Here is my script
>
> -------------------------------------------------------------------
> # Root qdisc
> tc qdisc add dev eth0 root handle 1:0 cbq bandwidth 9Mbit \
>   avpkt 1000 cell 8
>
> # Classes
> tc class add dev eth0 parent 1:0 classid 1:1 cbq bandwidth 9Mbit \
>   rate 5Mbit weight 0.3 allot 1514 avpkt 1000 bounded prio 1
> tc class add dev eth0 parent 1:0 classid 1:2 cbq bandwidth 9Mbit \
>   rate 5Mbit weight 0.3 allot 1514 avpkt 1000 bounded prio 2
> tc class add dev eth0 parent 1:0 classid 1:3 cbq bandwidth 9Mbit \
>   rate 5Mbit weight 0.3 allot 1514 avpkt 1000 bounded prio 3
>
> # Leaf qdiscs
> tc qdisc add dev eth0 parent 1:1 handle 10:0 sfq perturb 10
> tc qdisc add dev eth0 parent 1:2 handle 20:0 sfq perturb 10
> tc qdisc add dev eth0 parent 1:3 handle 30:0 sfq perturb 10
>
> # Filters
> tc filter add dev eth0 parent 1:0 proto ip prio 0 u32 \
>   match ip tos 0x10 0xff flowid 1:1
> tc filter add dev eth0 parent 1:0 proto ip prio 1 u32 \
>   match ip tos 0x04 0xff flowid 1:2
> tc filter add dev eth0 parent 1:0 proto ip prio 2 u32 \
>   match ip tos 0x08 0xff flowid 1:3
> -------------------------------------------------------------------
>
> I send some traffic at different rate : 3Mb/s, 3.5Mb/s,
> 4Mb/s, 4.5Mb/s,
> 5Mb/s, 6Mb/s
>
> 1st in only one class at a time
>    ==> the result is always 2.35Mb/s
>
> then in the 3 classes at the same time with the same rates.
>    ==> the result rate is close from wanted rate
>
> Can someone explain to me why we I send data in only one
> class the rate is
> so low ?
>
> Thank you
> Emmanuel
>
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>

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