Hi philip, to identify such bottlenecks, it's often a nice clue to know which block consumes the most CPU. I don't know it the Linux perf counters work well on ARM (simply haven't tried), but if they do: There's a program called perf. Usage in short
sudo sysctl kernel.perf_event_paranoid=-1 perf record -ag python yourflowgraph.py perf report Best regards, Marcus On 08/10/2017 03:28 AM, Philip Hahn wrote: > Sean - OK, I understand what you mean now, thank you - the overflow is > not reported until the pressure hits the source block. > Cinaed - In this case it is not my flowgraph but gnss-sdr which I've > run successfully on several platforms. In this case it is running on a > Raspberry Pi 3. I anticipate hitting some roadblocks although > reportedly it's been done before; I am trying to determine the current > bottleneck. > > thanks > > philip > > On Wed, Aug 9, 2017 at 3:15 PM, Cinaed Simson <cinaed.sim...@gmail.com > <mailto:cinaed.sim...@gmail.com>> wrote: > > On 08/08/2017 07:56 PM, Philip Hahn wrote: > > Folks, > > > > Is there a way to diagnose which block first reports an > overflow in a > > flowgraph? > > > > In my particular instance I am running a flowgraph which is > overflowing > > without pegging either RAM or CPU. > > It could also be an error in the plumbing of your flowgraph. > > -- Cinaed > > > > > > > Thank you, > > > > philip > > > > > > _______________________________________________ > > Discuss-gnuradio mailing list > > Discuss-gnuradio@gnu.org <mailto:Discuss-gnuradio@gnu.org> > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > <https://lists.gnu.org/mailman/listinfo/discuss-gnuradio> > > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org <mailto:Discuss-gnuradio@gnu.org> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > <https://lists.gnu.org/mailman/listinfo/discuss-gnuradio> > > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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