Il 01/09/2014 15:09, Christian Borntraeger ha scritto: > This is just wild guessing: > If virtio-blk and virtio-serial share an IRQ, the guest operating system has > to check each virtqueue for activity. Maybe there is some inefficiency doing > that. > AFAIK virtio-serial registers 64 virtqueues (on 31 ports + console) even if > everything is unused.
That could be the case if MSI is disabled. Paolo
