On Thu, Feb 18, 2016 at 8:20 PM, Andy Zhou <az...@ovn.org> wrote: > This is the new 'poll group' feature I have been working on improve > the efficiency in dealing with large number of connections, and its > first application to improve ovsdb-sever. > > There is a known limitation: > > The probing feature does not work properly. Poll group avoids > waking up a connection if there is no active I/O going on. An inactive > session won't send out probes. Timed wake up currently bypass those > connections per design. I can think of a few options to improve / restore > this feature if necessary. In the mean time, the TCP keep alive option, > suggested on OVN IRC channel also looks attractive. >
I have since figured out what the problem was. Poll_block() can be waken either by fd events or by time out. Sessions joined poll group should still be visited if it was time out. I have reposted the series with the fix. IMHO, TCP keep alive may still be worth looking into. _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
