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<div class="moz-cite-prefix">On 11/15/2017 08:31 PM, Dave Taht
wrote:<br>
</div>
<blockquote type="cite" cite="mid:87fu9f72za.fsf@nemesis.taht.net">
<blockquote type="cite" style="color: #000000;">
<pre wrap=""> However, like you, I just sigh when I see the behemoth detnet is building.
Does it? Well, so far the circumference seems justififiable for what they want
to achieve, at least according to what I can tell from these rather still
abstract concepts.
The sort of industrial control applications that detnet is targeting
require far lower queuing delay and jitter than fq_CoDel can give. They
have thrown around numbers like 250us jitter and 1E-9 to 1E-12 packet
loss probability.
Nonetheless, it's important to have a debate about where to go to next.
Personally I don't think fq_CoDel alone has legs to get (that) much better.
</pre>
</blockquote>
<pre wrap="">The place where bob and I always disconnect is that I care about
interflow latencies generally more than queuing latencies and prefer to
have strong incentives for non-queue building flows in the first
place. This results in solid latencies of 1/flows at your bandwidth. At
100Mbit, a single 1500 byte packet takes 130us to deliver, gbit, 13us,
10Gbit, 1.3us.</pre>
</blockquote>
<p>A not necessarily informed enough question to that: couldn't this
marking based virtual queueuing get extended to a per flow
mechanism if the marking loop was implemented in an efficient way?<br>
</p>
<pre class="moz-signature" cols="72">--
Besten Gruß
Matthias Tafelmeier
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