Machine-translated by Google. Questions are authored in English.
Top

Discussion

A task consistently completes in 2 ms but its worst case is measured at 9 ms on one rare path. The analysis must use

  • A.2 ms, the rare path being negligible in practice
  • B.the mean of the two figures
  • C.9 ms only if the rare path occurs more than once a second
  • D.9 ms, the guarantee resting on the worst case

Answer: D

The whole point of a hard real time guarantee is that it holds on the day the rare path is taken at the worst moment. If nine milliseconds makes the set unschedulable, the remedy is to shorten that path rather than to discount it.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.