On Fri, Nov 16, 2007, matthew zeier wrote: > > 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 > though the box doing the push is pushing much more out to the Internet. > If I run several rsync's it goes quicker so I know I have the bandwidth. > > What's limiting me?
RTT + TCP window sizes? Assuming say 50ms RTT (what is it?) then the TCP rate at 64k window sizes without SACK, etc is ~ a megabyte/sec? (1.2 megabytes, so ~10mbit.) RTT + rsync protocol? I'm not sure if the -B option to set the blocksize does what you want though. Adrian _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
