Benjamin Thery wrote: > Daniel Lezcano wrote: >> Hi, >> >> Some performance tests was made by Benjamin to watch out the impact of >> the network namespace. The good news is there is no impact when used >> with or without namespaces. That has been checked using a real network >> device inside a network namespace. >> >> These results are consistent with the ones previously made for ipv4. >> >> http://lxc.sourceforge.net/network/bench_ipv6_graph.php >> >> Thanks to Benjamin who did all the performance tests :) > > In these results, may be, there is one thing that should be explained. > It is the CPU utilization overhead in the 'veth' case. > > Compared to physical devices or macvlan, veth interfaces don't benefit > from hardware offloading mechanisms: i.e. checksums have to be computed > by the soft. That explains the big overhead in CPU utilization when You can tune the veth devices not to account checksum when unnecessary. > using this kind of virtual interface. > > Benjamin > >> Regards >> -- Daniel >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> Sauf indication contraire ci-dessus: >> Compagnie IBM France >> Siège Social : Tour Descartes, 2, avenue Gambetta, La Défense 5, 92400 >> Courbevoie >> RCS Nanterre 552 118 465 >> Forme Sociale : S.A.S. >> Capital Social : 542.737.118 ? >> SIREN/SIRET : 552 118 465 02430 >> >> > > _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers