On Tue, Jun 12, 2012 at 10:24:24AM -0400, Whit Blauvelt wrote: > The host is Ubuntu 10.10 with the 2.6.35-28-server kernel. Libvirt is > 0.8.3-1ubuntu19.4, qemu-kvm is 0.12.5+noroms-0ubuntu7.11. Not sure how that > relates to "Get kvm version >= 60" (from http://www.linux-kvm.org/page/Virtio) > but it's at least a "Kernel >= 2.6.25". The relationship between KVM and QEMU is all too confusing, but nowadays you should only need to care about the qemu-kvm version (?). 0.12 is quite old and Ubuntu 10.10/maverick no longer receives (security) updates, so you should consider upgrading if posssible. If upgrading the whole distro is infeasible, you might be able to install qemu-kvm and libvirt from a newer Ubuntu release without bringing in too much dependencies. > <interface type='bridge'> > <mac address='00:16:36:89:65:2e'/> > <source bridge='br0'/> > <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> > <model type='virtio'/> > </interface> I like to use network type interfaces and "logical" network names, but this should work fine. You might want to experiment with different offload settings (ethtool -k) to see if they make any difference with the igb card. Also, have you tried measuring the performance between the host and a guest? _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users