On Wed, 2011-11-23 at 09:12 +0100, Eric Dumazet wrote: > I had no time to look at OVS, but current tc model is not scalable, > everything is performed under a queue lock. > Maybe its time to redesign a new model, based on modern techniques.
Making the enqueur/dequeuer lockless would be a big win. What happened to your idea of ring buffer? What other hot areas do you see? It used to be ingress/egress share the qdisc lock - but that is now gone. > By the way, we seriously lack good documentation on tc, not counting > many features. Code might be there, but without documenation, working > samples, who can use it ? > > Take a look at last cls_flow extension, and try to use it on a real > setup, you'll find its almost not possible... There's no tc-central.org unlike the nice effort the netfilter guys have put over the years. Documentation is there - sometimes a little too much with differing "opinions" (lartc that Herbert pointed to is a good starting point); but googling also helps. Unfortunately, sometimes the people who understand stuff have no motivation to do docs. cheers, jamal _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
