On Mon, Jan 07, 2013 at 02:25:26AM +0000, Lichunhe wrote: > >On Sun, Jan 06, 2013 at 09:22:13AM +0000, Lichunhe wrote: > >> Could anyone tell me the max flow entries in the datapath flow table? > >> Or it has not a limitation. I can't find this in datapath source code. > > > >The datapath flow table doesn't have a specific limitation, but it's not > >normally a relevant question, because userspace tries hard to keep the > >number of flows in the kernel flow table bounded to a relatively small > >number. > > You say that it depends the expire mechanism, the "expire" function in > the ofproto-dpif.c, delete the flow entries which have been idle too > long. So if the flow entry is always used, it won't be deleted. In > some scenario, it will exhaust the memory resource.
The more kernel flow table entries it installed, the more stringent userspace gets about how active a flow has to be. It tends to limit the size of the kernel flow table. > And in handle_table_stats_request function, reply the capability of > flow table is 1000000(max_entries), But it has not been used in > anywhere. You seem to confuse the kernel flow table with the OpenFlow flow table. Their properties are quite different. _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
