Debugging the CPU load

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?

Thanks and best regards,
Philipp
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