Hi, I am using ovn with openstack and using geneve tunnel as an overlay. I have two compute nodes and I am trying to test network performance via iperf3 between VMs.
I have configured 9000 on tunnel interface and VM has 1500 mtu. The network performance with 1500mtu is 3.5Gbps with --bidir switch and with 8942 I am having 7.5Gbps with --bidir between VMs on different compute hosts. I am net using dpdk and or any other offloading. I have checked ovs-dpctl stats. Node01# ovs-dpctl show system@ovs-system: lookups: hit:24147954 missed:294831 lost:4 flows: 21 masks: hit:161013147 total:4 hit/pkt:6.59 port 0: ovs-system (internal) port 1: br-int (internal) port 2: tapeee623a9-24 port 3: tap18ca5a79-10 port 4: br-vlan (internal) port 5: bond0 port 6: genev_sys_6081 (geneve: packet_type=ptap) port 8: tap0181d519-c0 port 9: tap630cd3eb-61 Node02# ovs-dpctl show system@ovs-system: lookups: hit:23287526 missed:1140779 lost:5 flows: 19 masks: hit:196158405 total:11 hit/pkt:8.03 port 0: ovs-system (internal) port 1: br-int (internal) port 2: br-vlan (internal) port 3: bond0 port 4: genev_sys_6081 (geneve: packet_type=ptap) port 5: tap58e445c4-75 port 6: tap0181d519-c0 Are above stats ok or do I need to perform any other tuning on kernel or at ovs level ? Ammad
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