Re: [ippm] WGLC for draft-ietf-ippm-responsiveness

Hello IPPM,

I've read draft-ietf-ippm-responsiveness-03. The draft is well-written
and easy to read in my opinion. I consider the contribution novel and
useful.

Please find my comments and questions inline below:

IP Performance Measurement                                     C. Paasch
Internet-Draft                                                  R. Meyer
Intended status: Standards Track                             S. Cheshire
Expires: 22 April 2024                                        Apple Inc.
                                                              W. Hawkins
                                                University of Cincinnati
                                                         20 October 2023

                Responsiveness under Working Conditions
                   draft-ietf-ippm-responsiveness-03
Abstract

.....

4.1.1.  Single-flow vs multi-flow

.....

One of the configuration parameters for the test is an upper bound on the
number of parallel load-generating connections. We recommend a default
value for this parameter of 16.

Question: What is the rationale for choosing 16 as the upper bound?

.....

7. Responsiveness Test Server Discovery ..... Consider this example
scenario: A user has a cable modem service offering 100 Mb/s download
speed, connected via gigabit Ethernet to one or more Wi-Fi access points in
their home, which then offer service to Wi-Fi client devices at different
rates depending on distance, interference from other traffic, etc. By
having the cable modem itself host a Responsiveness Test Server instance,
the user can then run a test between the cable modem and their computer or
smartphone, to help isolate whether bufferbloat they are experiencing is
occurring in equipment inside the home (like their Wi-Fi access points) or
somewhere outside the home.

Comment: It might be useful to add some reflections about how
measurements to different points can be compared.

For arguments sake, let's say we measure towards two hypothetical
servers and get RPM to an ISP-hosted server of 500, and RPM to the
cable modem of 3000.

How can those values be compared or otherwise reasoned about?

Best regards,

Bjørn Ivar Teigen

On Tue, 5 Dec 2023 at 19:10, Marcus Ihlar <marcus.ihlar=
40ericsson.com@dmarc.ietf.org> wrote:

>
>
> Hello IPPM,
>
>
>
> This email starts a Working Group Last Call for " Responsiveness under
> Working Conditions”, draft-ietf-ippm-responsiveness.
>
>
>
> https://datatracker.ietf.org/doc/draft-ietf-ippm-responsiveness/
>
> https://www.ietf.org/archive/id/draft-ietf-ippm-responsiveness-03.html
>
>
>
> Please review the document and send your comments in response to this
> email, along with whether you think the document is ready to progress.
>
>
>
> Please send your reviews and feedback by *Friday, **December* *22*.
>
>
>
> BR,
>
> Marcus & Tommy
>
>
> _______________________________________________
> ippm mailing list
> ippm@ietf.org
> https://www.ietf.org/mailman/listinfo/ippm
>

-- 
Bjørn Ivar Teigen, Ph.D.
Head of Research
+47 47335952 | bjorn@domos.ai | www.domos.ai
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