[c-nsp] what limits bw on a tcp stream?

[Robert E. Seastrom]

>> I have gear in Amsterdam and in San Jose.  Pushing log files from 
>> Amsterdam to San Jose through rsync seems to top out at 7Mbps even 
>
> Is rsync using ssh to move the data?  ssh has its own windowing
> issues.  There's a high perf fix for that which you should be able
> to find via google.

This.  http://www.psc.edu/networking/projects/hpn-ssh/

Modern TCP stacks deal OK.  7Mbps at that distance is about right for
ssh-constrained.

                                        ---Rob