On Sat, Mar 16, 2013 at 12:06:30AM -0500, Steve wrote: > Here's the issue. I want to communicate between virtual machines, second > Ethernet virtual port. But I would like to use the host loopback for that so > as to not be limited to Ethernet port speeds, for large copies, etc. Right > now, the machine is connected to a 10mbps switch on port 2 and would like to > get far faster transfer speeds when using the so called private LAN. Bridging > eth1 merely limits the speed to 10 Mbps. If it was bridged to the host > loopback, I was hoping it could achieve far faster speeds and also not > saturate the switch. > > So, could I make a br1 that is assigned to 127.0.0.1 and then each host can > use that as eth1?--
Guest<->guest communication is not affected by physical NIC link speed. A software bridge with the guest tap interfaces and the host's physical interface should allow guests to communicate >10 Mbps. Have you measured the speed of guest<->guest networking and found it is <10 Mbps? If you still experience poor performance, please post your QEMU command-line, ifconfig -a (on host), and brctl show (on host) output. Stefan -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
