[LARTC] ESFQ

[LARTC] ESFQ

[Vladimír Třebický]

Hi,

I have little problem with ESFQ. I set root qdisc cbq on eth1 (which is on
LAN side of network), then 1:1 cbq class with exact bandwidth and its two
child - cbq 1:10 and cbq 1:20 with 1:1's bandwidth divided. I also set two
ESFQ perturb 10 hash dst on those two classes. But when someone starts to
download with 100 threads, he has much more bandwith than someone with only
one. I understand that this is exactly what esfq should solve, so I think
that somewhere on my side is mistake :-( This is my configuration:

tc qdisc add dev eth0 root handle 1: cbq bandwidth 10Mbit avpkt 1000 cell 8

tc class add dev eth0 parent 1: classid 1:1 cbq bandwidth 10Mbit rate 256
Kbit weight 2.56 Kbit prio 1 allot 1514 cell 8 maxburst 20 avpkt 1000
isolated

tc class add dev eth0 parent 1:1 classid 1:10 cbq bandwidth 10Mbit rate 32
Kbit weight 3.2 Kbit prio 1 allot 1514 cell 8 maxburst 18 avpkt 100 isolated
tc class add dev eth0 parent 1:1 classid 1:20 cbq bandwidth 10Mbit rate 224
Kbit weight 2.24 Kbit prio 2 allot 1514 cell 8 maxburst 2 avpkt 1500 bounded

tc qdisc add dev eth0 parent 1:10 handle 10: esfq perturb 10 hash dst
tc qdisc add dev eth0 parent 1:20 handle 20: esfq perturb 10 hash dst

iptables -t mangle -A PREROUTING -m length --length 0:500 -j MARK --set-mark
3
iptables -t mangle -A PREROUTING -m length --length ! 0:500 -j
MARK --set-mark 4

tc filter add dev eth0 parent 1: protocol ip handle 3 fw flowid 1:10
tc filter add dev eth0 parent 1: protocol ip handle 4 fw flowid 1:20

Thank you very much for answer,

Vladimir Trebicky

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Re: [LARTC] ESFQ

[Stef Coene]

On Saturday 28 September 2002 12:01, Vladimír Tøebický wrote:
> Hi,
>
> I have little problem with ESFQ. I set root qdisc cbq on eth1 (which is on
> LAN side of network), then 1:1 cbq class with exact bandwidth and its two
> child - cbq 1:10 and cbq 1:20 with 1:1's bandwidth divided. I also set two
> ESFQ perturb 10 hash dst on those two classes. But when someone starts to
> download with 100 threads, he has much more bandwith than someone with only
> one. I understand that this is exactly what esfq should solve, so I think
> that somewhere on my side is mistake :-( This is my configuration:
>
> tc qdisc add dev eth0 root handle 1: cbq bandwidth 10Mbit avpkt 1000 cell 8
>
> tc class add dev eth0 parent 1: classid 1:1 cbq bandwidth 10Mbit rate 256
> Kbit weight 2.56 Kbit prio 1 allot 1514 cell 8 maxburst 20 avpkt 1000
> isolated
>
> tc class add dev eth0 parent 1:1 classid 1:10 cbq bandwidth 10Mbit rate 32
> Kbit weight 3.2 Kbit prio 1 allot 1514 cell 8 maxburst 18 avpkt 100
> isolated tc class add dev eth0 parent 1:1 classid 1:20 cbq bandwidth 10Mbit
> rate 224 Kbit weight 2.24 Kbit prio 2 allot 1514 cell 8 maxburst 2 avpkt
> 1500 bounded
>
> tc qdisc add dev eth0 parent 1:10 handle 10: esfq perturb 10 hash dst
> tc qdisc add dev eth0 parent 1:20 handle 20: esfq perturb 10 hash dst
>
> iptables -t mangle -A PREROUTING -m length --length 0:500 -j MARK
> --set-mark 3
> iptables -t mangle -A PREROUTING -m length --length ! 0:500 -j
> MARK --set-mark 4
>
> tc filter add dev eth0 parent 1: protocol ip handle 3 fw flowid 1:10
> tc filter add dev eth0 parent 1: protocol ip handle 4 fw flowid 1:20
>
> Thank you very much for answer,
You have to make class 1:1 bounded so it can not get more bandwidth than it's 
rate.
And remove all isolated parameters.  They are not working.  In fact, if you 
add a isolated parameter to class 1:10 and 1:20 then these class will get 
more bandwidth then the parent allows even if the parent is bounded.  I think 
it's a bug in cbq (more info on 
http://www.docum.org/stef.coene/qos/tests/cbq/classes.html).


tc qdisc add dev eth0 root handle 1: cbq bandwidth 10Mbit avpkt 1000 cell 8

tc class add dev eth0 parent 1: classid 1:1 cbq bandwidth 10Mbit rate 256
Kbit weight 2.56 Kbit prio 1 allot 1514 cell 8 maxburst 20 avpkt 1000
bounded

tc class add dev eth0 parent 1:1 classid 1:10 cbq bandwidth 10Mbit rate 32
Kbit weight 3.2 Kbit prio 1 allot 1514 cell 8 maxburst 18 avpkt 100
tc class add dev eth0 parent 1:1 classid 1:20 cbq bandwidth 10Mbit rate 224
Kbit weight 2.24 Kbit prio 2 allot 1514 cell 8 maxburst 2 avpkt 1500


Stef

-- 

stef.coene@docum.org
 "Using Linux as bandwidth manager"
     http://www.docum.org/
     #lartc @ irc.oftc.net

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[LARTC] esfq

[ThE PhP_KiD]

hi,

I want to try esfq in order to make a load balance
in my linux router, (both, lan side and interent side)

I want that all hosts of my lan haves the same bandwidth
avaible.

Since linux router are connected to an ISP which privide 
a variable bandwidth, I think that can't use HTB.

Also, in this situation, how can I do to priorize some
LAN hosts from others ? 

Thanks you very much in advance.

Andres.



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