Thank you Marcus and apologies for the late reply. As it turns out perf is not included with Raspbian but can be compiled fairly easily: http://jireren.github.io/blog/2016/09/19/Compile-Perf/
-philip On Thu, Aug 10, 2017 at 9:15 AM, Marcus Müller <marcus.muel...@ettus.com> wrote: > 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> > 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 >> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > > > > _______________________________________________ > Discuss-gnuradio mailing > listDiscuss-gnuradio@gnu.orghttps://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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