[LARTC] What is the reccomended minimum rate for leaf htb classfor accurate operation?

[Andy Furniss]

mjoachimiak@poczta.onet.pl wrote:
> 
>>mjoachimiak@poczta.onet.pl wrote:
>>
>>>Your gues is right. To get HTB work correctly you must know rate
> 
> parameter
> 
>>>for your connection also known as CIR.
>>>Coud you tell what minimum rate your clients have?
>>
>>My worst HTB class has rate&ceil 778bps.
>>
>>I guess the lower the rate, the less accurate the result. It can't be
>>accurate, because the class already exceeds it's limit by sending just
>>one single packet.
> 
> I agree. As far as I know average MTU is 1500bytes. I have rate
> 13kbit/8=1625bytes so the limit should not be reached. Maybe there is
> overhead on ppp link and with this overhead clients gets congested?
> What do you think?
> Any ideas?

Low rates seem OK for me. I don't think relating packet size to rate in 
kbit/sec is the right way to think about things.

A  class with a low rate will send a packet and then not be able to send 
again for an amount of time which is (pre)calculated from packet size 
and rate. The time may be > 1 second, so things work out in the end.


Andy.



> 
>>Maybe it's more accurate in the long run, but I don't have any
>>statistics to prove that. Anyway, the traffic for that class is damn
>>slow, and that's all I need to know. ;-)
>>
>>Andreas