On 24 October 2016 at 19:39, 张东亚 <fortitude.zh...@gmail.com> wrote: > Hi List, > > We have now testing openvswitch 2.6.0 on kernel 3.10.45, however we noticed > there is performance drop than openvswitch 2.5.0 on the same kernel, which > iperf can only have a 2G bandwidth for a pair of 10G links. > > After check the code, it seems on openvswitch 2.5.0, HAVE_METADATA_DST macro > is used to control whether use backported vxlan tunnels, in 3.10.45 kernel > which will result HAVE_METADATA_DST not defined, thus VXLAN receive offload > of 3.10.45 kernel is used. > > However, on openvswitch 2.6.0, HAVE_METADATA_DST is renamed to > HAVE_USE_UPSTREAM_TUNNEL, and in 3.10.45 kernel this macro is defined, while > HAVE_UDP_OFFLOADS/HAVE_UDP_TUNNEL_SOCK_CFG_GRO_RECEIVE are both not defined, > which make there is not VXLAN receive offload callback registered. > > Is this a desired behavior? Or we must try to update our kernel to a new > supported one like 3.18.X.
You need to upgrade, kernel 3.10 didn't have this support. _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
