per...@o2.pl wrote: > Hi, > > Fruits aside, that was a valid question. Cause of bad performance when > combining DPDK with GNU Radio is a topic that needs to be addressed. > > My hypothesis regarding the cause was: > > DPDK needs few processor cores for itself only. GNU Radio runs a lot of > thread (one thread per block +) and it doesn’t care that it tries to run on > cores that are busy with DPDK related work. And that causes problems. > > The resulting solution that solved the problem for me: > > For every block of the flow-graph run set_processor_affinity with a list of > all processor cores minus DPDK cores, that you set in the /etc/uhd/uhd.conf > file.
I have to add that this worked with USRP X310, UHD 4.0, Intel X520 or X710 network cards. I can’t get streaming to work without losses for higher rates with DPDK on UHD 4.2. Actually everything works better without DPDK for me currently. Best Regards,\ Piotr Krysik
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