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What confuses me is, how the popular HTB script
'wondershaper' works! The sum of its subclasses' rates is way over the
parent's rate.
----- Original Message -----
Sent: Friday, December 23, 2005 4:22
AM
Subject: Re: exact rate
Your subclass's combined rate's should never exceed your parent
class's rate, and in this case your parent class is 5mbit, yet your subclasses
have a combined guarenteed bandwidth of 6mbit. In my setup, the
root classes rate is followed strictly. With burst, it may go over
temporarily but over say a minute's time, the bandwidth is pretty close to the
set rate, usualy within ~0.4%. I'm unsure on what the behavior is when you
allocate more bandwidth to subclasses than the root, but it may be the reason
you're not seeing accurate results.
- Jody
On 12/14/05, Anton
Glinkov <lartc@xxxxxx>
wrote:
Hello
I
am using htb (krenel 2.6.14.3 + esfq patch
from fatooh.org) to limit the
bandwidth.
But I want the absolute maximum rate to be for example 5Mbit
and not to
exceed it.
here is the script:
$tc qdisc add dev ${NETIF} root
handle 1 htb r2q 4
$tc class add dev ${NETIF} parent 1: classid 1:21 htb
rate 5Mbit ceil 5Mbit
$tc class add dev ${NETIF} parent 1:21 classid
1:101 htb rate 2Mbit ceil
5Mbit prio 1
$tc class add dev ${NETIF}
parent 1:21 classid 1:102 htb rate 1Mbit ceil
5Mbit prio 2
$tc class
add dev ${NETIF} parent 1:21 classid 1:103 htb rate 3Mbit ceil
5Mbit prio
3
when I don't specify burst the flow always exceeds 5Mbit
when I
try to play with it (the burst) for example turning it off
completely
burst 0 cburst 0 for parent and children classes the rate
falls ot 2-3 Mbits
removing the esfq qdiscs doesn't change
anything...
I want exact rate of 5Mbit for the parent class and no
more?
any suggestions are welcome :)
--
Anton
Glinkov
network
administrator
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