From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Luciano" <luciano@elo.com.br>
Date: Tue, 25 Apr 2006 19:20:13 +0000
Subject: RES: [LARTC] Backlog with less rate than defined
Message-Id: <002001c6689d$49b439a0$0900fe0a@LucianoNotebook>
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Hi Andy,

I=B4m not sure if I understood what you told about arp packets.
I use htb default but the problem occurs even when the default queue
rate is low (it is almost always low in rate and pps).

The attached files are:
Rc.local - criation of the basic queues including default
Regras.inc - criation of each queue when the user login
Queues - statistics of the basic queues

Thanks for help,

Luciano

-----Mensagem original-----
De: Andy Furniss [mailto:andy.furniss@dsl.pipex.com]=20
Enviada em: segunda-feira, 24 de abril de 2006 20:33
Para: Luciano
Cc: lartc@mailman.ds9a.nl; Jader@elo.com.br
Assunto: Re: [LARTC] Backlog with less rate than defined

Luciano wrote:
> Hi all,
>=20
> I setup a Linux machine to act as Lan Authentication server. So, the
> same script that redirect the http connection to a login web page, it
> create some queues to limit traffic, login by login.=20
>=20
> The PC uses only 1 ethernet interface that receive the packets source
> routed to it and forward/nat to the external gateway using the same
> interface.
>=20
> For each login I create a queue like that:
>=20
> tc class add dev '.$if_externa.' parent 1:1 classid 1:'.$filaDown.'
htb
> rate '.$banda_down.'kbit ceil 	'.$banda_down.'kbit prio 1'
> tc filter add dev $if_externa protocol ip parent 1:0 prio 1 handle
> ::$filaDown u32 match ip dst $ipcliente/32 flowid 	1:$filaDown
>=20
> My problem is that most of the queues created does NOT get full rate
as
> defined. I can see the packets entering backlog with much less rate
than
> defined, ex:
>=20
> class htb 1:b1 parent 1:1 prio 1 rate 256Kbit ceil 256Kbit burst 1926b
> cburst 1926b
>  Sent 6644151 bytes 5435 pkts (dropped 0, overlimits 0)
>  rate 669bps backlog 107p

Htb rate average can be quite long and misleading.

I would tcpdump and see whether the rate looks OK with that.

If not see what the dequeue behaviour is - you don't show all your=20
rules, if you are using htb default class on root and shaping eth=20
remember arp will get delayed there unless you filter it elsewhere.

Andy.

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<?php=0A=
=0A=
## Var=EDaveis da limita=E7=E3o de banda =0A=
# $banda_down=0A=
# $banda_up=0A=
# $ppp =3D porta do ip roteavel=0A=
# $ipcliente =3D endereco ip do cliente=0A=
=0A=
$filaDown=3Ddechex((2*$ppp)-1);=0A=
$filaUp=3Ddechex(2*$ppp);=0A=
=0A=
$ip_servidor=3D'200.249.166.135';=0A=
$if_interna=3D'eth0';=0A=
$if_externa=3D'eth0';=0A=
=0A=
	//	Criacao da fila de upload=0A=
		$script[]=3D'tc class add dev '.$if_externa.' parent 1:1 classid =
1:'.$filaUp.' htb rate '.$banda_up.'kbit ceil '.$banda_up.'kbit prio 1';=0A=
		$script[]=3D"tc filter add dev $if_externa protocol ip parent 1:0 prio =
1 handle ::$filaUp u32 match ip src $nat/32 flowid 1:$filaUp";=0A=
	=0A=
	//	Criacao da fila de download=0A=
		$script[]=3D'tc class add dev '.$if_externa.' parent 1:1 classid =
1:'.$filaDown.' htb rate '.$banda_down.'kbit ceil '.$banda_down.'kbit =
prio 1';=0A=
		$script[]=3D"tc filter add dev $if_externa protocol ip parent 1:0 prio =
1 handle ::$filaDown u32 match ip dst $ipcliente/32 flowid 1:$filaDown";=0A=
=0A=

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=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=0A=
Fila geral=0A=
=0A=
class htb 1:1 root rate 100000Kbit ceil 100000Kbit burst 129587b cburst =
129587b =0A=
 Sent 16673062596 bytes 41581335 pkts (dropped 0, overlimits 0) =0A=
 rate 396521bps 852pps =0A=
 lended: 0 borrowed: 0 giants: 0=0A=
=0A=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=0A=
Enderecos conectados=0A=
class htb 1:5 parent 1:1 leaf 5: prio 1 rate 1000Kbit ceil 1000Kbit =
burst 2879b cburst 2879b =0A=
 Sent 777900 bytes 7679 pkts (dropped 0, overlimits 0) =0A=
 rate 51bps =0A=
 lended: 7679 borrowed: 0 giants: 0=0A=
=0A=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=0A=
Nat=0A=
=0A=
class htb 1:6 parent 1:1 leaf 6: prio 1 rate 5000Kbit ceil 5000Kbit =
burst 7999b cburst 7999b =0A=
 Sent 132176418 bytes 1432427 pkts (dropped 0, overlimits 0) =0A=
 rate 3616bps 15pps =0A=
 lended: 1432427 borrowed: 0 giants: 0=0A=
=0A=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=0A=
Maquinas internas=0A=
=0A=
class htb 1:7 parent 1:1 leaf 7: prio 1 rate 1000Kbit ceil 1000Kbit =
burst 2879b cburst 2879b =0A=
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0) =0A=
 lended: 0 borrowed: 0 giants: 0=0A=
 tokens: 23040 ctokens: 23040=0A=
=0A=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=0A=
=0A=
Fila Padrao=0A=
class htb 1:efff parent 1:1 leaf efff: prio 1 rate 1Mbit ceil 1Mbit =
burst 2909b cburst 2909b =0A=
 Sent 1113213839 bytes 9059857 pkts (dropped 61529, overlimits 0) =0A=
 rate 1130bps 13pps =0A=
 lended: 9059857 borrowed: 0 giants: 0=0A=
=0A=

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#!/bin/sh -x=0A=
=0A=
tc qdisc del dev eth0 root handle 1: htb=0A=
tc qdisc del dev eth0 handle ffff: ingress=0A=
=0A=
tc qdisc add dev eth0 root handle 1: htb default efff=0A=
tc qdisc add dev eth0 handle ffff: ingress=0A=
tc class add dev eth0 parent 1: classid 1:1 htb rate 100000kbit ceil =
100000kbit=0A=
=0A=
####=0A=
# Trafego do donald para clientes conectados=0A=
tc class add dev eth0 parent 1:1 classid 1:0005 htb rate 1000kbit ceil =
1000kbit prio 1=0A=
tc qdisc add dev eth0 parent 1:5 handle 5: sfq perturb 10=0A=
tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip dst =
200.241.84.8/32 flowid 1:5=0A=
tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip dst =
200.241.84.2/32 flowid 1:5=0A=
tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip sport =
80 0xffff match ip src 200.249.166.132/32 flowid 1:5=0A=
=0A=
####=0A=
# Trafego de saida - ips do nat para fora e de retorno=0A=
tc class add dev eth0 parent 1:1 classid 1:0006 htb rate 5000kbit ceil =
5000kbit prio 1=0A=
tc qdisc add dev eth0 parent 1:6 handle 6: sfq perturb 10=0A=
tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip src =
200.249.86.128/27 flowid 1:6=0A=
tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip dst =
200.249.86.128/27 flowid 1:6=0A=
=0A=
####=0A=
# Trafego de saida - enderecos nao conectados=0A=
tc class add dev eth0 parent 1:1 classid 1:0007 htb rate 1000kbit ceil =
1000kbit prio 1=0A=
tc qdisc add dev eth0 parent 1:7 handle 7: sfq perturb 10=0A=
tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 \=0A=
	match ip src 200.249.166.135/32=0A=
	match ip sport 80 0xffff flowid 1:7=0A=
tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 \=0A=
	match ip src 200.249.166.135/32=0A=
	match ip sport 443 0xffff flowid 1:7=0A=
tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip sport =
22 0xffff flowid 1:7=0A=
=0A=
####=0A=
# Fila padrao=0A=
tc class add dev eth0 parent 1:1 classid 1:efff htb rate 1024kbit ceil =
1024kbit prio 1=0A=
tc qdisc add dev eth0 parent 1:efff handle efff: sfq perturb 10=0A=
=0A=

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