On Mon, Jan 23, 2017 at 05:02:02PM -0800, Alexei Starovoitov wrote: > Frankly I don't understand the whole virtio nit picking that was happening. > imo virtio+xdp by itself is only useful for debugging, development and testing > of xdp programs in a VM. The discussion about performance of virtio+xdp > will only be meaningful when corresponding host part is done. > Likely in the form of vhost extensions and may be driver changes. > Trying to optimize virtio+xdp when host is doing traditional skb+vhost > isn't going to be impactful.
Well if packets can be dropped without a host/guest transition then yes, that will have an impact even with traditional skbs. -- MST
