Re: [ledbat] INIT_CWND and MIN_CWND (WAS Re: New Version Notification for draft-ietf-ledbat-congestion-08.txt)

Le 20 oct. 2011 à 19:29, Joe Touch a écrit :

> 
> 
> On 10/19/2011 10:21 PM, Ingemar Johansson S wrote:
>> Hi
>> 
>> Change of subject name.
>> I have no strong opinion on this but I would like to ask how likely
>> it is that LEDBAT is used for shortlived flows in the first place.
> 
> INIT_CWND comes into play during any restart, e.g., after a gap in the offered load.
> 

Isn't that the role of max_allowed_cwnd, instead?

(section 3.4.2)
This algorithm restricts cwnd growth after a period of inactivity,
  where the cwnd is clamped down to a little more than flightsize using
   max_allowed_cwnd

Thanks,

David.

> While I don't expect LEDBAD would be used primarily for shortlived flows:
> 	1) we can't know that, so should plan accordingly
> 	2) long-lived flows with frequent gaps do exist, and
> 	should not cause a problem either
> 
> Joe
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=================================================================
David ROS
http://www.rennes.enst-bretagne.fr/~dros/

In theory, theory and practice are the same. In practice, they are different. -- Author unknown