Hi Levente, Thanks a lot for spending your time in figuring this!
I was looking for around 1000 ports between bridges. I also tried something similar, 2500 ports between two bridges. It became very slow, even the show and dump commands became show. I was also using Intel E5 series. Took an alternate approach. Couple of questions, related to multiprocessing. I believe, at any of point time, only one flow can be processed in a bridge. We can't do multiprocessing here within a bridge. Correct me if am wrong. But, say if I have two bridges can the flows in both bridges get executed simultaneously? Is there ways to improve flow processing in a single bridge by using multi cores? Thanks Kapil On 04-Jul-2016 5:20 PM, "Levente Csikor" <csi...@tmit.bme.hu> wrote: > Hi, > > I did not find any documented limit about the number of patchports, so I > wrote a simple script, which adds a predefined number of patchports and > some dummy rules into the flow tables to actually have some reason for the > whole stuff. > > First, I tried to add 100 and 1000 patchports between two OVS bridges. It > was feasible, but took some time. > Then I tried with 10000 patchports, but I couldn't wait until it finished. > After 1000 patchports, the adding procedure became slower and slower, so I > killed the whole process (after a couple of thousands patchports the time > OVS required for setting up one patchport was around a couple of seconds). > > So, as a conclusion, the question should be about its setup time. I don't > know what your actual scenario is, but if you plan to create more > patchports than a 1000, then there are a lot of other issues around it > besides the number of possible patchports (setup time could last to half a > day. What about the number of rules, will they fit? And update time becomes > also an interesting part of such a 'networking architecture'). > > Nevertheless, I did this investigation on an Intel(R) Xeon(R) CPU E5-2620 > 0 @ 2.00GHz (6 cores + 6 HT cores), with 64G RAM, and OVS-VSWITCHD was > consuming all the physical cores I had. > > I hope I may have helped (at least a little bit :)). > > Cheers, > Levente > > > > On 06/29/2016 07:04 PM, Kapil Adhikesavalu wrote: > > Hi, > > is there a limit on maximum number of patch ports between bridges ? > > Thanks > Kapil. > > > _______________________________________________ > discuss mailing > listdiscuss@openvswitch.orghttp://openvswitch.org/mailman/listinfo/discuss > > > > _______________________________________________ > discuss mailing list > discuss@openvswitch.org > http://openvswitch.org/mailman/listinfo/discuss > >
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