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

Yuchung Cheng <ycheng@google.com> Tue, 17 December 2013 15:59 UTC

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From: Yuchung Cheng <ycheng@google.com>
Date: Tue, 17 Dec 2013 07:58:41 -0800
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To: Gorry Fairhurst <gorry@erg.abdn.ac.uk>
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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 Tue, Dec 17, 2013 at 12:28 AM,  <gorry@erg.abdn.ac.uk> wrote:
>> 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?
I am referring to the main changes proposed in the draft, not just
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
>>>
>>>
>>>
>>> _______________________________________________
>>> tcpm mailing list
>>> tcpm@ietf.org
>>> https://www.ietf.org/mailman/listinfo/tcpm
>>
>
>

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