On 24/04/2015 10:12, Luke Gorrie wrote: > > I think this approach could be fruitful in bringing virtio-net to > VM-to-VM networking use cases. Unless virtio-net is extended for this > use case, I'm afraid DPDK and OpenDataPlane communities might steer > clear of VIRTIO. > > > Questions: > > - How fast is needed? > > - How fast is the vhost-user support that shipped in DPDK 2.0? vhost-user is fast. The problem is not the speed, it's the desire of a more peer-to-peer operation. virtio by design has very distinct roles for driver and device, so for VM2VM communication the virtio design requires two devices in the guest and two drivers, comprising a "switch", in the host. The switch could be using vhost-user indeed, but my understanding is that in some cases this switch component is undesirable. However, my understanding does not include _why_ it is undesirable. This is where we need to gather more information from the DPDK folks. Paolo _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
