[LARTC] 2 subclasses use more bandwidth then the rootclass has been allocated

From: Arne Van Theemsche <arnevt@office.xs4all.be>
To: lartc@vger.kernel.org
Subject: [LARTC] 2 subclasses use more bandwidth then the rootclass has been allocated
Date: Mon, 17 Jun 2002 12:23:15 +0000	[thread overview]
Message-ID: <marc-lartc-102431667511148@msgid-missing> (raw)

Hi

I have the rootdevice allocated 512k bandwidth (with the htb qdisc), then 
I have 2 subclasses each 384k (1 ceiled to 384k, 1 burstable to 512k).

both work fine, but the problem is, that when they both start a download, 
they both get 384k, together more then 512k (the rate of the root-class)

this is my setup

./tc qdisc add dev eth1 root handle 1: htb default 30
./tc class add dev eth1 parent 1: classid 1:1 htb rate 512kbit ceil 512kbit burst 15k
./tc class add dev eth1 parent 1:1 classid 1:10 htb rate 384kbit ceil 512kbit burst 15k
./tc class add dev eth1 parent 1:1 classid 1:20 htb rate 384kbit ceil 384kbit burst 15k

./tc qdisc add dev eth1 parent 1:10 handle 10: sfq perturb 10
./tc qdisc add dev eth1 parent 1:20 handle 20: sfq perturb 10

./tc filter add dev eth1 parent 1: protocol ip prio 1 handle 1 fw classid 1:10
./tc filter add dev eth1 parent 1: protocol ip prio 1 handle 2 fw classid 1:20

I mark my packets with iptables (which works just fine, limitting both 
classes to the amount given)

I tried a similar setup with cbq, resulting in the same effect

I use 2.4.18 (self-compiled), with the htb (v2) module attached to it, on 
a redhat 7.2, the tc-binarie is htb-aware, but i don't think this is the 
problem, since when i use the cbq-class, i use the original tc binarie 
included in redhat 7.2

does anybody has a clue?

thx
Arne

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