[Cake] COBALT implementation in ns-3 with results under different traffic scenarios

[Shefali Gupta]

Hi Jonathan,

Thanks!

First, we noticed that cobalt_cache_init method was not implemented in ns-3
COBALT, so we implemented it (but this wasn't the main reason for the wrong
behaviour).

Later, we found that the data types used in the implementation of COBALT in
ns-3  were different from those used in Linux.

e.g., uint32_t was used instead of int64_t for the variables with
datatype ktime_t in Linux.

Results improved considerably after these changes.

We will update the wiki with latest results.

Regards,
Shefali Gupta
Jendaipou Palmei

On Wed 23 Jan 2019, 9:53 p.m. Jonathan Morton <chromatix99 at gmail.com wrote:

> > On 23 Jan, 2019, at 6:19 pm, Shefali Gupta <shefaligups11 at gmail.com>
> wrote:
> >
> > We believe we have spotted the issue now. The new plot is attached below.
>
> That does look considerably improved.  What was the problem in the end?
>
> Now would be a good time to regenerate all the test graphs, and make sure
> there are results for each test for each qdisc tested.  Ideally all graphs
> should be generated from the same run(s), to ensure their data is mutually
> consistent.
>
>  - Jonathan Morton
>
>
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