Advanced Laboratory on Embedded Systems S.r.l.

Response Time Analysis Use abstract model to compute the communicationtime and the execution time of software— Best case - everything goes right: no cache miss, neededresources free, no conflict to access the media— Worst case - everything goes bad: e.g. empty cache, neededresources are busy, media busy with other communications Timing Accident: event causing additional delay Timing Penalties: associated delay Unfortunately modern execution platforms are verydifficult to abstract to keep the problem solvable and atthe same time to achieve good prediction results— Timing accident are complex and dynamic— Timing penalties have big range7/9/2012 Alberto Ferrari - ALES S.r.l.16