[P4-dev] Congestion control in P4

Changhoon Kim chang at barefootnetworks.com
Wed May 3 00:24:55 EDT 2017


P4 programmable targets tend to expose queue lengths (or any queueing
information in general) as intrinsic metadata attached to each packet
entering the egress pipeline.

By the way, there's a paper recently published at NSDI which presents a few
nice ways to approximate RCP.

https://www.usenix.org/conference/nsdi17/technical-sessions/presentation/sharma

-- Chang

On Tue, May 2, 2017 at 9:03 PM, Md. Islam <mislam4 at kent.edu> wrote:

> Hi
>
> I was looking to implement RCP router in P4. Is there any related example
> I can use? Is there a way I can get the queue length and the number of
> long-lived flows in P4?
>
> Many thanks
> Tamim
>
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