Re: [aqm] paper: per flow fairness in a data center network

"dario.rossi" <dario.rossi@telecom-paristech.fr> Thu, 13 December 2018 07:59 UTC

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From: "dario.rossi" <dario.rossi@telecom-paristech.fr>
To: Dave Taht <dave.taht@gmail.com>, bloat <bloat@lists.bufferbloat.net>, Cake List <cake@lists.bufferbloat.net>, aqm@ietf.org
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Subject: Re: [aqm] paper: per flow fairness in a data center network
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Ciao Dave (&all)
While I'd love to do a bit more on the topic, I recently joined Huawei, and while I still work on networking,  this one is not so aligned with my current set of activities... 
so I cannot unfortunately help moving forward :/
Best,D.
PS fyi Also I tend to read this email less freqiently than @huawei
Sent from my new-but-still-not-so-smart-phone. Excuse my typos and its random fixes
Oo   Chair holder NewNet@Paris  >    Professor, Telecom ParisTech~     Professor, Ecole Polytechnique 

-------- Original message --------From: Dave Taht <dave.taht@gmail.com>; Date: 12/6/18  04:18  (GMT+01:00) To: bloat <bloat@lists.bufferbloat.net>;, Cake List <cake@lists.bufferbloat.net>;, aqm@ietf.org Subject: paper: per flow fairness in a data center network 
While I strongly agree with their premise:

"Multi-tenant DCNs cannot rely on specialized protocols and mechanisms
that assume single ownership and end-system compliance. It is
necessary rather to implement general, well-understood mechanisms
provided as a network service that require as few assumptions about DC
workload as possible."

... And there's a solid set of links to current work, and a very
interesting comparison to pfabric, their DCTCP emulation is too flawed
to be convincing, and we really should get around to making the ns2
fq_codel emulation fully match reality. This is also a scenario where
I'd like to see cake tried, to demonstrate the effectiveness (or not!)
of 8 way set associative queuing, cobalt, per host/per flow fq, etc,
vs some of the workloads they outline.

https://perso.telecom-paristech.fr/drossi/paper/rossi18hpsr.pdf

-- 

Dave Täht
CTO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-831-205-9740