Re: [tcpm] [Fwd: Confirmation for Auto-Post of I-D draft-ietf-tcpm-newcwv]

gorry@erg.abdn.ac.uk Tue, 17 December 2013 08:28 UTC

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Date: Tue, 17 Dec 2013 08:28:32 -0000
From: gorry@erg.abdn.ac.uk
To: Yuchung Cheng <ycheng@google.com>
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Cc: "tcpm@ietf.org Extensions" <tcpm@ietf.org>
Subject: Re: [tcpm] [Fwd: Confirmation for Auto-Post of I-D draft-ietf-tcpm-newcwv]
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> On Mon, Dec 16, 2013 at 1:28 PM,  <gorry@erg.abdn.ac.uk> wrote:
>>
>> We've submitted a revised ID for new-cwv.
>>
>> There are 2 main updates:
>>
>> - The draft now firmly recommends the use of pacing. We will provide
>> performance data on pacing for the next IETF.
>>
>> - The draft has a small amendment to the algorithm to ensure that the
>> NVP
>> does not inhibit cwnd growth when a sender fully consumes the cwnd.
>> There
>> was previously a corner case in the measurement of pipeACK when a flow
>> started or resumed that could result making newCWV more conservative
>> than
>> standard TCP (e.g. for a bulk flow). We think the correction is within
>> the
>> original spirit of new CWV.
>>
>> We'd welcome feedback on these or any other aspects.
>
> I appreciate the new section on burst mitigation but why standard track?
>
The previous discussions on STD track centres on whether we would include
require a burst mitigation section, so this is now a good question.

> The change has pro-found impact on congestion control as it changes
> how cwnd increases per ACK and after idle. There are a lot to
> experiment before we know this works well in real networks.
>
Are you referring to the new ack-mitigation section - requiring pacing
after idle?

Gorry

>>
>> Best wishes,
>>
>> the new CWV authors
>>
>> --------------------------------------------------------------------------
>>
>>
>> Hi,
>>
>> The IETF datatracker draft submission service has received your draft
>> draft-ietf-tcpm-newcwv-04, and requires a
>> confirmation step in order to be able to complete the posting of
>> the draft.
>>
>> Please follow this link to the page where you can confirm the posting:
>> Confirmation URL:
>> http://datatracker.ietf.org/submit/status/56402/confirm/c575579feb585d58d82af80a319918630e8d0529/
>>
>>
>> Best regards,
>>
>>         The IETF Secretariat
>>         through the draft submission service
>>
>>
>>
>> _______________________________________________
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>> tcpm@ietf.org
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>