On Mon, Nov 24, 2014 at 02:20:32PM +0000, Krist van Besien wrote: > On Thu, 2014-11-20 at 14:57 +0000, Krist van Besien wrote: > > Looking for solutions to our performance problems I stumbled upon a > > mention of "megaflows". However how you enable these is nowhere > > indicated. (At least nowhere that google can find) > > Can someone tell me how you use this feature? > > I've done a few test. On one machine I started nping with the following > options: > nping --tcp -p 1-65000 --flags S 192.168.0.102 -q --rate 100000 -c > 1000 > > When I do ovs-dpctl dump-flows I see a lot of flows, a few thousand > even, all looking very similar: > > tunnel(tun_id=0x12,src=10.3.1.20,dst=10.3.1.53,tos=0x0,ttl=64,flags(key)),in_port(77),eth(src=fa:16:3e:03:45:0f,dst=fa:16:3e:ea:02:09),eth_type(0x0800),ipv4(src=192.168.0.103,dst=192.168.0.102,proto=6,tos=0,ttl=64,frag=no),tcp(src=43971,dst=21474), > packets:0, bytes:0, used:never, actions:83 > tunnel(tun_id=0x12,src=10.3.1.20,dst=10.3.1.53,tos=0x0,ttl=64,flags(key)),in_port(77),eth(src=fa:16:3e:03:45:0f,dst=fa:16:3e:ea:02:09),eth_type(0x0800),ipv4(src=192.168.0.103,dst=192.168.0.102,proto=6,tos=0,ttl=64,frag=no),tcp(src=43971,dst=1634), > packets:0, bytes:0, used:never, actions:83 > tunnel(tun_id=0x12,src=10.3.1.20,dst=10.3.1.53,tos=0x0,ttl=64,flags(key)),in_port(77),eth(src=fa:16:3e:92:73:01,dst=fa:16:3e:ea:02:09),eth_type(0x0800),ipv4(src=192.168.0.103,dst=192.168.0.102,proto=6,tos=0,ttl=64,frag=no),tcp(src=18040,dst=43971), > packets:0, bytes:0, used:never, actions:83 > > This looks like megaflows is not active. > What do I look at next?
Like I said, the degree to which megaflows are useful depends on your version of OpenFlow and the contents of your flow tables. What are they? _______________________________________________ discuss mailing list [email protected] http://openvswitch.org/mailman/listinfo/discuss
