Discussion
Raising the tick rate from 100 Hz to 1000 Hz gives finer timing resolution at the cost of
Answer: A
Correct answer: ten times as many tick interrupts and their overhead
Each tick is an interrupt with a context save, a list walk and a possible switch, so ten times the rate is ten times that cost - a real fraction of the processor on a small part. Determinism is unaffected and the memory unchanged; what is spent is processor time, which is why the tick rate is chosen rather than maximised.
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