Christian Stigen Larsen <cslar...@gmail.com>: >> An RTT of 87 ms is very high to begin with. What does mininet do that >> could cause such a high RTT? > > Fair point. Honestly, I don't know, but perhaps I can ask on mininet-discuss. > > I thought it was simply due to the Python controller. Remember it gets all > packets and has to send down a forward-command for each. > > But yeah, 47 ms extra per packet is quite the overhead (the > link-latency configuration is 40 ms).
FYI, I got a tip that with recent versions of POX (it's on origin/dart, at least) you can run POX with the --unthreaded-sh flag. That decreased latency from an 80-100 ms to around 50 ms! Again, this is without any flows, so there is only about 10 ms RTT overhead in doing so. That's pretty good! -- Christian Stigen Larsen _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
