On Thu, 20 Sep 2018 15:02:53 -0500 Jay Rolette <role...@infinite.io> wrote:
> On Thu, Sep 20, 2018 at 1:11 PM Stephen Hemminger < > step...@networkplumber.org> wrote: > > > I wonder if KNI is claiming performance that was never measured on current > > CPU, OS, DPDK. > > > > With single stream and TCP testing on IXGBE (DPDK), I see lowest > > performance with KNI. > > > > Rx Tx > > KNI 3.2 Gbit/sec 1.3 Gbit/sec > > TAP 4.9 4.7 > > Virtio 5.6 8.6 > > > > Perhaps for 18.11 we should change documentation to remove language > > claiming > > better performance with KNI, and then plan for future deprecation? > > > > Do TAP and Virtio provide equivalent function to KNI? I can't speak for any > other products, but ours is dependent on KNI. The ability for control plane > applications to use normal Linux sockets with DPDK is key even if it isn't > performant. > > Hopefully the answer is "yes", in which case I'll happily port over to > using one of the faster mechanisms. > > Thanks, > Jay See: https://doc.dpdk.org/guides-17.11/howto/virtio_user_as_exceptional_path.html
