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 -- 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
