On 6 December 2022 18:46:18 CET, rjmcmahon via Make-wifi-fast <make-wifi-fast@lists.bufferbloat.net> wrote:

Nice write up and work over the years.

On tooling:

iperf 2 supports full duplex, multiple parallel streams, tx start times, bounceback, isochronous, etc. Man page is here

https://iperf2.sourceforge.io/iperf-manpage.html

The flows code in the flows directory

https://sourceforge.net/p/iperf2/code/ci/master/tree/flows/

is written in python 3 and leverages asyncio.

https://docs.python.org/3/library/asyncio.html

This is all released as open source.

Bob
This is where things stood on the wifi front, back in 2016. Nobody
understood us...

https://docs.google.com/document/d/1Se36svYE1Uzpppe1HWnEyat_sAGghB3kE285LElJBW4/edit#

So I sort of enjoyed re-reading that this morning, and all the
enthusiastic commentary we'd had on it. Perhaps we can reshape it and
find ways to move forward today?

I am happy to have seen so many products hitting the market 5+ years
later that leverage this work, many openwrt derived, like evenroute,
quantum, and openwifi, others from pure linux, like eero and google
fiber, and so far as I can tell, in many a chromebook, and of course
ios and osx.

Still, there was so much work left to be done, and the work applied to
all forms of wireless technology, be it 6 or 12ghz, or 60ghz, or
starlink. Just the other day I was watching a 5G engineer that was
struggling to get decent simultaneous throughput up and down, the test
tool showing that, but not the 25 seconds of buffering built into the
rmnet driver in poor conditions, and "only" 150ms perfect ones. This
test tool shows "perfect" throughput for this device:

https://www.spinics.net/lists/netdev/msg865852.html
(anyone know which tool it was? see image here:
https://drive.google.com/file/d/1gSbozrtd9h0X63i6vdkNpN68d-9sg8f9/view
)

vs the actual, underlying, unusable 25 seconds!!! - result - if only
that test tool attempted to start up even one more flow partially
through the test, perhaps we'd be getting somewhere. An increasingly
favorite test of mine is the staggered start "squarewave" tests in the
flent suite. For those that haven't tried it, crusader is the first
tool I've seen that not only has a staggered start latency under load
test, but as its written in rust, runs on every OS in the planet. Give
it a shot?

https://github.com/Zoxc/crusader/releases/tag/v0.0.9-testing
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