[En-Nut-Discussion] Debugging the CPU load

[bon at elektron.ikp.physik.tu-darmstadt.de]

Philipp Burch writes:
> Hi everyone,
> 
> we have an Ethernut heartbeat LED connected to our MCUs as a quick check 
> of the global CPU/thread load. Despite the firmware runs without issues, 
> we recently found that some projects exhibit a constantly-on LED, i.e. a 
> 100% CPU load. The available diagnosing facilities show that all threads 
> are in the SLEEP state (except for the idle thread) most of the time, so 
> it is not apparent that a single thread just eats up all available CPU time.
> 
> Is there some functionality available to find the CPU load per thread?
>
Can you debug with a debugger:
Source ethernut/nut/tools/gdb/nutos.py in xxx-gdb-py and have a look
at the thread.  Otherwise the SWO tools at
https://github.com/orbcode/orbuculum.git, especially opbtop can be of
help.

Bye
-- 
Uwe Bonnes                bon at elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
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