Subject: [tsvwg] Questions about Low Latency Low Loss Scalable Throughput (L4S) presentation

From: Luca Muscariello <[email-masked]>
Date: Mon, 25 Mar 2019 18:15:27 +0100

Hi,

I am trying to understand the curves at page 3 in the slide deck below.

https://datatracker.ietf.org/meeting/104/materials/slides-104-tsvwg-sessb-32-wg-l4s-ecn-drafts-02.pdf

It is clear, though not surprising, that DCTCP reduces latency, and that
the priority scheduler protects DCTCP.
So far so good.
It also shows that ECN-cubic is not as good as DCTCP.

It would be nice to see, if possible, latency quantiles

-  adding a ping  like application with this same workload or a voice like
application
- adding a DCTCP workload while running fq_codel

in order to compare the apples with apples and oranges with oranges.

Thanks
Luca