On Friday 08 August 2003 00:20, Patrick Turley wrote:
> (This is a re-statement of a question I asked earlier)
>
> I have a number of HTB classes feeding into a root HTB qdisc. Whenever I
> set the rate on any of the subordinate classes to 78 kpbs or less, I get
> the following message:
>
>
> HTB : quantum of class <class ID> is small. Consider r2q change.
>
>
> I've done some reading about the meaning of r2q, and I understand it
> now:
>
> quantum = rate/r2q
>
> where:
>
> rate is expressed in kilobits per second
> quantum is expressed in bytes
> r2q has the appropriate units and is 10 by default
>
> Based on what I've read, it's not at all clear why HTB would complain
> about a rate of 78Kbit. That corresponds to a quantum of 7800 bytes,
> which is much larger than the maximum Ethernet packet size (1500).
>
> Anyone have a clue?
Yes. 78kbit = 9.75kbyte. So quantum = 9.75kilobyte/10 = 975byte.
Stef
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