Re: [RFC PATCH v5 net-next 4/4] tcp: add NV congestion control

On 8/5/15, 5:51 PM, "knneth@gmail.com on behalf of Kenneth Klette
Jonassen" <knneth@gmail.com on behalf of kennetkl@ifi.uio.no> wrote:

On Wed, Aug 5, 2015 at 3:39 AM, Lawrence Brakmo [off-list ref] wrote:

quoted

This is a request for comments.

Nice to see more development on delay-based congestion control.

It would be good to see how NV stacks up against CDG. Any chance of
adding cdg as a congestion control parameter to your experiments?

Done. I¹m updating the TCP-NV page with the updated results, should be
done by tomorrow (8/26).

Experiments on NV without its temporary cwnd reductions would also be
of interest -- to get a reference of how effective this mechanism is.

Done. It turns out that it only improves fairness a little but hurts
P99 latencies more significantly. So it is now off by default.
Thanks for making me re-examine this feature.