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Response time analysis computes a task's response time by

  • A.measuring the task on the target hardware
  • B.iterating a recurrence until it converges
  • C.summing the execution times of all the tasks in the set
  • D.dividing the period by the utilisation of the set

Answer: B

The recurrence adds the task's own execution to the interference from higher priority tasks, which itself depends on the response time being computed, so it is solved by iteration from an initial guess. It converges when the utilisation is below one.

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