[Tmrg] A reminder about An NS2 TCP Evaluation Tool Suite

[Lachlan Andrew]

Greetings Hide,

On 20/08/07, Hideyuki Shimonishi <h-shimonishi at cd.jp.nec.com> wrote:
>
> Nice to talk to you again.

Yes, good to hear from you.  I hope you don't mind, but I'm Cc'ing
this to  tmrg.

> It may be useful to consider distribution of per-flow throughput, rather
> than some statistical values.
> Also, in multiple-bottleneck topology, we may have to consider
> alpha-proportional fairness, i.e. resource fairness v.s. throughput fairness.

Good point.  I was also thinking that it would be good both to
evaluate the total "utility" based on some sort of  alpha-fairness,
and also try to evaluate what "alpha" is the best approximation in the
case of multiple links.

> Some results are shown in my PFLDnet 2007 presentation.
> Some results about throughput distribution are shown in pp17-18.
> Some results about fairness are shown in left figure of page 21, which
> shows AReno, compound-TCP, and Hamilton-TCP are rather throughput fair, and
> others are rather resource fair. I do not think this figure is the best, we
> may need to use another statistics to show this tradeoff.

OK, I'll check out those figures.

> >4. The parking lot topology is very symmetric.  It would be
> >interesting to look at parking-lot topologies with different
> >bandwidths on the different bottlenecks.
>
> As you may know since Cesar has presented our tool at ICCRG, our NEC-UCLA
> tool should be one other option to do simulations in complex topologies.

Yes, I saw that presentation.  One feature I really like about that
tool is the way it compares very systematically against Reno using
exactly the same traffic.

Cheers,
Lachlan

-- 
Lachlan Andrew  Dept of Computer Science, Caltech
1200 E California Blvd, Mail Code 256-80, Pasadena CA 91125, USA
Phone: +1 (626) 395-8820    Fax: +1 (626) 568-3603