cwnd and sstresh monitor

[Vlad GALU]

On 12/1/05, Alin-Adrian Anton <aanton at spintech.ro> wrote:
> Dear Hackers,
>
>         I would like to monitor the changes of cwnd and sstresh values during
> TCP traffic, in order to plot graphs and interpret congestion.
>
>         So I need (cwnd, timestamp) and (sstresh, timestamp) records to be
> taken everytime one of the two variables is modified.
>
>         I'd like to ask you for suggestions, which would be the best aproach
> (kernel patch, kernel module, etc?), and how would this be done best?
> (the interception of values, the storage of snapshots, etc)?
>

   Does exporting them via sysctl, and graph them using anything
(rrdtool) sound reasonable ?
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