How hard would it be to implement virtio over vbus and perhaps the virtio-net backend? This would leave only one variable in the comparison, clear misconceptions and make evaluation easier by judging each of vbus, venet etc separately on its own merits. The way things are now, it is unclear exactly where those performance improvements are coming from (or how much each component contributes) because there are too many variables. Replacing virtio-net by venet would be a hard proposition if only because virtio-net has (closed source) windows drivers available. There has to be shown that venet by itself does something significantly better that virtio-net can't be modified to do comparably well. Having venet in addition to virtio-net is also difficult, given that having only one set of paravirtual drivers in the kernel was the whole point behind virtio. Just a user's 0.02, Pantelis -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html