Matt, Sam
thank you very much. Great list!
Regards
Sebastian
> On Jun 19, 2022, at 21:51, Sam Crawford <[email protected]> wrote:
>
> Thanks for the heads up.
>
> Downstream throughput and upstream throughput are measured in indepdent
> tests, they aren't mixed as the question suggests might be the case. So,
> latency under downstream load is measured independently from latency under
> upstream load. The raw data for both is published for the FCC project.
>
> I've not read the paper to understand which one they are using. But I'll take
> a look tomorrow.
>
> Thanks
>
> Sam
>
>
> On Sun, 19 Jun 2022, 20:39 Matt Mathis, <[email protected]> wrote:
> Sam, see the question below about your methodology, from your FCC report.
>
> Thanks,
> --MM--
> Evil is defined by mortals who think they know "The Truth" and use force to
> apply it to others.
> -------------------------------------------
> Matt Mathis (Email is best)
> Home & mobile: 412-654-7529 please leave a message if you must call.
>
>
>
> On Sun, Jun 19, 2022 at 8:46 AM Sebastian Moeller via Rpm
> <[email protected]> wrote:
> Hi Dave,
>
> > On Jun 19, 2022, at 17:32, Dave Taht via Bloat
> > <[email protected]> wrote:
> >
> > It's not clear if they are only measuring downloads in fig 4. ?
> >
> > https://vaibhavbajpai.com/documents/papers/proceedings/fcc-networking-2022.pdf
>
> indeed:
>
> "The SamKnows probes measure a variety of broadband met- rics [22] over IPv4.
> The tests [22] covered in this paper include: multi-threaded download speed,
> UDP latency, UDP latency un- der load, and UDP packet loss. The tests connect
> to the closest measurement servers (based on round-trip time); measurement
> servers are hosted both off-net (outside of ISP boundary) and on-net (within
> ISP boundary). The off-net measurement points were hosted by Measurement Lab
> (M-Lab) [23] and changed to Level 3 Communications (CenturyLink) across ten
> cities in the US, while the on-net measurement targets are hosted by the ISPs
> themselves. The FCC publishes the raw data for each month [24], along with
> annual reports on major findings [25]. For controllability reasons, the
> annual MBA reports only cover measurements to the off-net locations, i.e.,
> latency results might be inflated due to geographical distance. Thus, we also
> consider the on-net measurements in our analysis."
>
> reference 22 points to
> https://www.fcc.gov/general/measuring-broadband-america-open-methodology
> "Latency under load Average round trip time for a series of regularly
> spaced UDP packets sent during downstream/upstream sustained tests"
>
> this seems to imply that it would be mixed upload/download saturation?
>
>
> But I agree that this is unclear... maybe Sam (Crawford) knows (pun
> intended), I do not have his email, but maybe he is on-list or someone else
> can relay that question?
>
> Regards
> Sebastian
>
>
> >
> >
> > --
> > FQ World Domination pending:
> > https://blog.cerowrt.org/post/state_of_fq_codel/
> > Dave Täht CEO, TekLibre, LLC
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