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

[Peter Lothberg]

> >> 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

We did over 4Gbit/s with two mail-order PC's in 2004 over a
best_effort comercial IP network at about 0.5s RTT.

http://proj.sunet.se/LSR3-s/


-Peter