Improving the Sensitivity of Deadlines with a Specific Asynchronous Scenario for Harmonic Periodic Tasks scheduled by FP

The aim of this paper is to address the problem of correctly dimensioning real-time embedded systems. It is well known that computers which control systems are greatly affected by delays and jitter occurring in the control loop. In the literature, a deadline reduction approach has been considered as one solution to reducing the jitter experienced by a task and therefore obtaining better loop stability in the control loop. Here, in order to improve the sensitivity of the deadlines, we propose another solution for reducing the deadline of a task when all tasks are scheduled with the deadline monotonic algorithm. This is performed for a specific asynchronous scenario for harmonic periodic tasks. We compare the results to those for the synchronous scenario.