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<p>That technique seems interesting, but are they addressing the
right <i>problem</i>?</p>
<p>They note that delay-based congestion control is better, but old
loss-based control out-competes it, so they propose to stop using
delay in that case.<br>
</p>
<p>Logically, I'd prefer delay-based control to detect when the
other end is transmitting aggressively, try to signal it to slow
down using it's preferred signalling, and if that fails, beat the
aggressor over the head with packet drops until the other end
starts to behave itself (;-))<br>
</p>
<p>--dave<br>
</p>
<div class="moz-cite-prefix">On 2020-10-25 11:06 a.m., Toke
Høiland-Jørgensen via Bloat wrote:<br>
</div>
<blockquote type="cite" cite="mid:87k0ve5oqs.fsf@toke.dk">
<pre class="moz-quote-pre" wrap="">This popped up in my Google Scholar mentions:
<a class="moz-txt-link-freetext" href="https://arxiv.org/pdf/2010.08362">https://arxiv.org/pdf/2010.08362</a>
It proposes using a delay-based CC when FQ is present, and a loss-based
when it isn't. It has a fairly straight-forward mechanism for detecting
an FQ bottleneck: Start two flows where one has 2x the sending rate than
the other, keep increasing their sending rate until both suffer losses,
and observe the goodput at this point: If it's ~1:1 there's FQ,
otherwise there isn't.
They cite 98% detection accuracy using netns-based tests and sch_fq.
-Toke
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</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
David Collier-Brown, | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
<a class="moz-txt-link-abbreviated" href="mailto:davecb@spamcop.net">davecb@spamcop.net</a> | -- Mark Twain
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