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

Luca Muscariello <luca.muscariello@gmail.com> Thu, 13 December 2018 09:51 UTC

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From: Luca Muscariello <luca.muscariello@gmail.com>
Date: Thu, 13 Dec 2018 10:51:17 +0100
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To: Dave Taht <dave.taht@gmail.com>
Cc: bloat <bloat@lists.bufferbloat.net>, Cake List <cake@lists.bufferbloat.net>, AQM IETF list <aqm@ietf.org>
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Subject: Re: [aqm] [Cake] paper: per flow fairness in a data center network
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I disagree on the claims that DC switches do not implement anything.
They do, from quite some time now.

https://www.cisco.com/c/en/us/products/collateral/switches/nexus-9000-series-switches/white-paper-c11-738488.html



On Thu, Dec 6, 2018 at 4:19 AM Dave Taht <dave.taht@gmail.com> wrote:

> 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
> _______________________________________________
> Cake mailing list
> Cake@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/cake
>

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