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

Gorry Fairhurst <gorry@erg.abdn.ac.uk> Thu, 20 October 2011 18:15 UTC

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Date: Thu, 20 Oct 2011 19:15:14 +0100
From: Gorry Fairhurst <gorry@erg.abdn.ac.uk>
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To: Joe Touch <touch@isi.edu>
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Cc: Ingemar Johansson S <ingemar.s.johansson@ericsson.com>, "jana.iyengar@gmail.com" <jana.iyengar@gmail.com>, "ledbat@ietf.org" <ledbat@ietf.org>
Subject: Re: [ledbat] INIT_CWND and MIN_CWND (WAS Re: New Version Notification for draft-ietf-ledbat-congestion-08.txt)
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On 20/10/2011 18:29, Joe Touch wrote:
>
> 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.
>
Is that the "restart window" (RW) in TCP?

> 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
>
I agree with both of these.

> Joe
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Gorry

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