A Bailout Protocol for Mixed Criticality Systems

TY - GEN

T1 - A Bailout Protocol for Mixed Criticality Systems

AU - Bate, I.

AU - Burns, A.

AU - Davis, R.I.

PY - 2015/7/1

Y1 - 2015/7/1

N2 - To move mixed criticality research into industrial practice requires models whose run-time behaviour is acceptable to systems engineers. Certain aspects of current models, such as abandoning lower criticality tasks when certain situations arise, do not give the robustness required in application domains such as the automotive and aerospace industries. In this paper a new bailout protocol is developed that still guarantees high criticality tasks but minimises the negative impact on lower criticality tasks via a timely return to normal operation. We show how the bailout protocol can be integrated with existing techniques, utilising offline slack to further improve performance. Static analysis is provided for the strong schedulability guarantees, while scenario based evaluation via simulation is used to explore the effectiveness of the protocol.

AB - To move mixed criticality research into industrial practice requires models whose run-time behaviour is acceptable to systems engineers. Certain aspects of current models, such as abandoning lower criticality tasks when certain situations arise, do not give the robustness required in application domains such as the automotive and aerospace industries. In this paper a new bailout protocol is developed that still guarantees high criticality tasks but minimises the negative impact on lower criticality tasks via a timely return to normal operation. We show how the bailout protocol can be integrated with existing techniques, utilising offline slack to further improve performance. Static analysis is provided for the strong schedulability guarantees, while scenario based evaluation via simulation is used to explore the effectiveness of the protocol.

KW - REAL-TIME

KW - mixed criticality

KW - FIXED PRIORITY SCHEDULING

KW - bailout

U2 - 10.1109/ECRTS.2015.30

DO - 10.1109/ECRTS.2015.30

M3 - Conference contribution

SN - 978-1-4673-7570-2

T3 - Euromicro Conference on Real-Time Systems

SP - 259

EP - 268

BT - Proceedings, 27th Euromicro Conference on Real-Time Systems

PB - IEEE

T2 - 27th Euromicro Conference on Real-Time Systems (ECRTS 2015)

Y2 - 7 July 2015 through 10 July 2015

ER -