On Mar 2, 2022, at 12:05 PM, Dave Täht <davet@teklibre.net> wrote:

On Wed, Mar 02, 2022 at 02:55:26PM -0500, Michael Richardson wrote:

<tom@evslin.com> wrote:

need to prosper in the hybrid digital world. As all of you know, QoS is much
more than up and downlink speed and tough-to-quantify jitter is a huge part
of it. My measurement tool zoomready (at freecheckip.com
<http://freecheckip.com/>  and  https://github.com/tevslin/zoomready) makes
a more or less continuous measurement of jitter but is quite crude; so

I think that Apple/Stuart did a good job inverting the jitter metric, and calling it
Rounds/Revolutions per Minute.  I suggest doing the same in your tool.

Except it's NOT a jitter metric. It is a latency under load metric primarily aime
at testing in-band (http 2.0 or quic) AQM latency. Most of our other tests
to date have a tendency to favor FQ measurements. 

Certainly jitter can be pulled out of detailed measurements using some
of the proposed methodologies. See the rpm@lists.bufferbloat.net list
an archives for more details.

We have a regular meeting on implementations and new data
at 10AM PDT tuesdays if anyone would like to join. 

--
]               Never tell me the odds!                 | ipv6 mesh networks [
]   Michael Richardson, Sandelman Software Works        |    IoT architect   [
]     mcr@sandelman.ca  http://www.sandelman.ca/        |   ruby on rails    [

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