On Thu, Jun 04, 2020 at 11:44:24AM +0200, Toke Høiland-Jørgensen wrote: > Hangbin Liu <liuhangbin@xxxxxxxxx> writes: > > Here is the test topology, which looks like > > > > Host A | Host B | Host C > > eth0 + eth0 - eth1 + eth0 > > > > I did pktgen sending on Host A, forwarding on Host B. > > Host B is a Dell PowerEdge R730 (128G memory, Intel(R) Xeon(R) CPU E5-2690 v3) > > eth0, eth1 is an onboard i40e 10G driver > > > > Test 1: add eth0, eth1 to br0 and test bridge forwarding > > Test 2: Test xdp_redirect_map(), eth0 is ingress, eth1 is egress > > Test 3: Test xdp_redirect_map_multi(), eth0 is ingress, eth1 is egress > > Right, that all seems reasonable, but that machine is comparable to > my test machine, so you should be getting way more than 2.75 MPPS on a > regular redirect test. Are you bottlenecked on pktgen or something? Yes, I found the pktgen is bottleneck. I only use 1 thread. By using the cmd you gave to me ./pktgen_sample03_burst_single_flow.sh -i eno1 -d 192.168.200.1 -m f8:bc:12:14:11:20 -t 4 -s 64 Now I could get higher speed. > > Could you please try running Jesper's ethtool stats poller: > https://github.com/netoptimizer/network-testing/blob/master/bin/ethtool_stats.pl Nice tool. > > I though you want me also test with bridge forwarding. Am I missing something? > > Yes, but what does this mean: > > (I use sample/bpf/xdp1 to count the PPS, so there are two modes data): > > or rather, why are there two numbers? :) Just as it said, to test bridge forwarding speed. I use the xdp tool sample/bpf/xdp1 to count the PPS. But there are two modes when attach xdp to eth0, general and driver mode. So there are 2 number.. 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 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 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 Kernel 5.7 + my patch(ingress i40e, egress i40e + veth) xdp_redirect_map_multi: generic mode: 1.13M PPS driver mode: 3.47M PPS I added a group that with i40e ingress and veth egress, which shows a significant drop on the speed. It looks like veth driver is a bottleneck, but I don't have more i40e NICs on the test bed... Thanks Hangbin
