On Thu, Jun 04, 2020 at 02:37:23PM +0200, Toke Høiland-Jørgensen wrote: > > Now I use the ethtool_stats.pl to count forwarding speed and here is the result: > > > > With kernel 5.7(ingress i40e, egress i40e) > > XDP: > > bridge: 1.8M PPS > > xdp_redirect_map: > > generic mode: 1.9M PPS > > driver mode: 10.4M PPS > > Ah, now we're getting somewhere! :) > > > Kernel 5.7 + my patch(ingress i40e, egress i40e) > > bridge: 1.8M > > xdp_redirect_map: > > generic mode: 1.86M PPS > > driver mode: 10.17M PPS > > Right, so this corresponds to a ~2ns overhead (10**9/10400000 - > 10**9/10170000). This is not too far from being in the noise, I suppose; > is the difference consistent? Sorry, I didn't get, what different consistent do you mean? > > > xdp_redirect_map_multi: > > generic mode: 1.53M PPS > > driver mode: 7.22M PPS > > > > Kernel 5.7 + my patch(ingress i40e, egress veth) > > xdp_redirect_map: > > generic mode: 1.38M PPS > > driver mode: 4.15M PPS > > xdp_redirect_map_multi: > > generic mode: 1.13M PPS > > driver mode: 3.55M PPS With XDP_DROP in veth perr, the number looks much better xdp_redirect_map: generic mode: 1.64M PPS driver mode: 13.3M PPS xdp_redirect_map_multi: generic mode: 1.29M PPS driver mode: 8.5M PPS > > > > Kernel 5.7 + my patch(ingress i40e, egress i40e + veth) > > xdp_redirect_map_multi: > > generic mode: 1.13M PPS > > driver mode: 3.47M PPS But I don't know why this one get even a little slower.. xdp_redirect_map_multi: generic mode: 0.96M PPS driver mode: 3.14M PPS Thanks Hangbin
