As others have said, check the TCP receive window on the receiving end of that slow transfer. There's a good chance that you don't have window scaling enabled on that device. You may already know this, but here's a link to the details that I've found to be helpful.
http://www.psc.edu/index.php/networking/641-tcp-tune John On Wed, Nov 19, 2014 at 2:18 PM, Johan Borch <[email protected]> wrote: > Hi! > > > I'm doing some performance troubleshooting between two linux systems, the > servers are located in each end of an L3VPN, with a bunch of routers > between them. > > Using Iperf and UDP I get ~1Gbps in both directions > Using iperf and TCP i get ~400Mbps in one direction and ~60Mbps in the > other direction > > Could this still be a network problem or should I dig on the linux side? > > Johan > _______________________________________________ > juniper-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/juniper-nsp > _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
