I am running userspace mode of ovs with the following topology VM1(eth0) ---- (eth0)VM2(eth1) --- (eth0)VM3
VM1 and VM3 are end hosts, and VM2 runs the userspace ovs daemon to emulate a two-port Ethernet switch. I sent UDP traffic from VM1 to VM3. Everything is received with 100 Mb/s rate. However, for 200 Mb/s data rate, packet losses are observed (below is the log), and throughput is around 150 Mb/s. If I connect VM1 and VM3 directly without using VM2, it is fine to receive 200 Mb/s or even high rate with no loss. It looks that ovs causes the packet drop and limit the throughput. Just wondering the reason and how to overcome this to emulate high data rate? Advices are very appreciated. sender log: time=1.000s packets=17066 bandwidth=199.996Mbps receiver log time=1.004s packets=12971 bandwidth=151.289Mbps actually, I tried TCP as well, the throughput is around 150 Mb/s as well. kevin _______________________________________________ discuss mailing list [email protected] http://openvswitch.org/mailman/listinfo/discuss
