On Mon, Dec 2, 2024 at 8:37 PM Ilya Maximets <[email protected]> wrote:
> On 11/22/24 09:40, Ales Musil wrote: > > Increase the recirculaton limit to 12 as OVN wants to adopt > > strategy which might lead to more recirculations in the logical > > router pipeline. > > Hi, Ales. Hi Ilya, > Could you, please, explain the scenario in more details > where so many recirculations are needed? Also, do you expect all > the traffic to have increased number of them or is it just for very > specific control traffic? > The need for more recirculations comes from the commit all patch for OVN. Unfortunately almost all traffic will be going through more recirculations, not necessarily 12. > > Asking because 12 is a lot. Every re-circulation means packet > re-classification and potential re-parsing, so it will have a huge > performance impact. > > And it doesn't only ally to the userspace datapath, while kernel > might endure so many recirculations in some scenarios, performance > will still be awful. > I'm aware of the potential performance impact, Han is testing whether we have any performance impact and if it's acceptable. If not we will have to come up with different strategy how to fix a few bugs in OVN. > > Best regards, Ilya Maximets. > > Thanks, Ales _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
