On Wed, 10 Jun 2020 10:35:08 +0800 Hangbin Liu <liuhangbin@xxxxxxxxx> wrote: > On Tue, Jun 09, 2020 at 10:31:19PM +0200, Toke Høiland-Jørgensen wrote: > > > Oh, sorry for the typo, the numbers make me crazy, it should be only > > > ingress i40e, egress veth. Here is the right description: > > > > > > Kernel 5.7 + my patch(ingress i40e, egress i40e) > > > xdp_redirect_map: > > > generic mode: 1.9M PPS > > > driver mode: 10.2M PPS > > > > > > xdp_redirect_map_multi: > > > generic mode: 1.58M PPS > > > driver mode: 7.16M PPS > > > > > > Kernel 5.7 + my patch(ingress i40e, egress veth(No XDP on peer)) > > > xdp_redirect_map: > > > generic mode: 2.2M PPS > > > driver mode: 14.2M PPS > > > > A few messages up-thread you were getting 4.15M PPS in this case - what > > changed? It's inconsistencies like these that make me suspicious of the > > whole set of results :/ > > I got the number after a reboot, not sure what happened. > And I also feel surprised... But the result shows the number, so I have > to put it here. > > > > > Are you getting these numbers from ethtool_stats.pl or from the XDP > > program? What counter are you looking at, exactly? > > For bridge testing I use ethtool_stats.pl. For later xdp_redirect_map > and xdp_redirect_map_multi testing, I checked that ethtool_stats.pl and > XDP program shows the same number. When run ethtool_stats.pl the number > will go a little bit slower. So at the end I use the xdp program's number. You cannot trust the xdp program's number, because it just counts all RX-packets, and don't take into account if the packets are getting dropped. We really want to verify (e.g. with ethtool_stats.pl) that the packets were successfully transmitted. -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer
