Re: [tcpm] I-D Action: draft-ietf-tcpm-hystartplusplus-12.txt

Neal Cardwell <ncardwell@google.com> Tue, 10 January 2023 15:24 UTC

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From: Neal Cardwell <ncardwell@google.com>
Date: Tue, 10 Jan 2023 10:24:30 -0500
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To: tcpm@ietf.org
Cc: i-d-announce@ietf.org, Praveen Balasubramanian <pravb.ietf@gmail.com>, huanyi@microsoft.com, Matt Olson <maolson@microsoft.com>
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Subject: Re: [tcpm] I-D Action: draft-ietf-tcpm-hystartplusplus-12.txt
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Looks like there is still one significant word in the "Deployments and
Performance Evaluations" section that needs to be updated to be accurate.

Existing draft-ietf-tcpm-hystartplusplus-12 text:

  There has been over a decade of experience using the
  original Hystart algorithm for all TCP connections in the
  Linux operating system with pacing *enabled* and an
  actual L = infinity.

Suggested text:

  There has been over a decade of experience using the
  original Hystart algorithm for all TCP connections in the
  Linux operating system with pacing *disabled* and an
  actual L = infinity.

I mentioned the rationale in the "Re: [tcpm] Changes to
draft-ietf-tcpm-hystartplusplus after WGLC" thread on Nov 29:

  https://mailarchive.ietf.org/arch/msg/tcpm/CSzCgxxSLrO9u63dymyyxqB6bD4/

cheers,
neal


On Mon, Jan 9, 2023 at 8:53 PM <internet-drafts@ietf.org> wrote:

>
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
> This draft is a work item of the TCP Maintenance and Minor Extensions WG
> of the IETF.
>
>         Title           : HyStart++: Modified Slow Start for TCP
>         Authors         : Praveen Balasubramanian
>                           Yi Huang
>                           Matt Olson
>   Filename        : draft-ietf-tcpm-hystartplusplus-12.txt
>   Pages           : 9
>   Date            : 2023-01-09
>
> Abstract:
>    This document describes HyStart++, a simple modification to the slow
>    start phase of congestion control algorithms.  Traditional slow start
>    can overshoot the ideal send rate in many cases, causing high packet
>    loss and poor performance.  HyStart++ uses a delay increase heuristic
>    to find an exit point before possible overshoot.  It also adds a
>    mitigation to prevent jitter from causing premature slow start exit.
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-tcpm-hystartplusplus/
>
> There is also an htmlized version available at:
> https://datatracker.ietf.org/doc/html/draft-ietf-tcpm-hystartplusplus-12
>
> A diff from the previous version is available at:
>
> https://author-tools.ietf.org/iddiff?url2=draft-ietf-tcpm-hystartplusplus-12
>
>
> Internet-Drafts are also available by rsync at rsync.ietf.org:
> :internet-drafts
>
>
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