Hi Moshe 2.5Mpps should not be a big deal even if you have many queues, just pay attention to dedicate one core to the fanout thread. As of idle queues (with no consumers) they should not add any significant overhead until you use them.
Alfredo > On 15 Jan 2017, at 13:47, Moshe Danielli <[email protected]> wrote: > > Hi Again Alfredo, > > > What about performance considerations ? > > Is creating 32 interfaces creating substantial CPU / memory ohverhead, as > opposed to creating only several virtual fanout interfaces ? I'm refering to > the creation of the interfaces only... not consuming the traffic by other > processes. > > Thanks again, > > Moshe > > > On Jan 12, 2017 20:50, Alfredo Cardigliano wrote: > Hi Moshe > there is a limit of 32 virtual interfaces when you use the fanout, because > of the API which is using a 32-bit mask to select the egress queues. > > Alfredo > >> On 12 Jan 2017, at 10:32, Moshe Danielli <[email protected] >> <mailto:[email protected]>> wrote: >> >> Hi Alfredo, >> >> I'm using the ixgbe driver with about 2.5M pps. >> What I'd like to do is clone the traffic so I can run multiple tcpdump >> instances, each with a different bpf, and store the output to a different >> pcap file, whose name is determined by the bpf in use. >> Is there a limit on the amount of virtual interfaces I can create in this >> scenario ? >> Thanks again ! >> Moshe >> >> On Jan 12, 2017 16:50, Alfredo Cardigliano wrote: >> Hi Moshe >> it really depends on several factors, including but not limited to traffic >> rate (pps), bandwidth, hw specs, >> I need to know more about your traffic, hw configuration and what are you >> trying to do in order to help you. >> >> Best Regards >> Alfredo >> >> > On 12 Jan 2017, at 06:00, Moshe Danielli wrote: >> > >> > Hi Guys, >> > >> > What is the rule of thumb when determining the maximum amount of fan out >> > interfaces (when using zfanout_ipc) ? Is it based on bandwidth, the hw >> > specs or a combination of both ? >> > >> > Thanks in advance, >> > >> > Moshe >> > _______________________________________________ >> > Ntop-misc mailing list >> > [email protected] <mailto:[email protected]> >> > http://listgateway.unipi.it/mailman/listinfo/ntop-misc >> > <http://listgateway.unipi.it/mailman/listinfo/ntop-misc> >> >> _______________________________________________ >> Ntop-misc mailing list >> [email protected] <mailto:[email protected]> >> http://listgateway.unipi.it/mailman/listinfo/ntop-misc >> <http://listgateway.unipi.it/mailman/listinfo/ntop-misc> >> >> >> >> _______________________________________________ >> Ntop-misc mailing list >> [email protected] <mailto:[email protected]> >> http://listgateway.unipi.it/mailman/listinfo/ntop-misc >> <http://listgateway.unipi.it/mailman/listinfo/ntop-misc> > > _______________________________________________ > Ntop-misc mailing list > [email protected] <mailto:[email protected]> > http://listgateway.unipi.it/mailman/listinfo/ntop-misc > <http://listgateway.unipi.it/mailman/listinfo/ntop-misc> > > _______________________________________________ > Ntop-misc mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop-misc
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