Exploring the Impact of Task Preemption on Dependability in Time-Triggered Embedded Systems: A Pilot Study

Author

Short, Michael ; Pont, Michael J. ; Fang, Jianzhong

Author_Institution

Embedded Syst. Lab., Univ. of Leicester, Leicester

fYear

2008

fDate

2-4 July 2008

Firstpage

83

Lastpage

91

Abstract

In this paper, we explore the impact of task preemption on the dependability of a single-processor embedded control system. Our particular focus in this exploratory study is on static-priority, time-triggered scheduler architectures. The study is empirical in nature and we employ a hardware-in-the-loop (HIL) testbed, representing a cruise control system for a passenger vehicle, in conjunction with fault-injection to perform the dependability comparisons. The results we have obtained suggest that the presence of preemption may have a negative influence on dependability; however further work is needed in this area before more general conclusions may be drawn.

Keywords

embedded systems; scheduling; software architecture; task analysis; cruise control system; embedded control system; fault injection; hardware-in-the-loop testbed; passenger vehicle; scheduler architecture; system dependability; task preemption; time-triggered embedded system; Algorithm design and analysis; Control systems; Digital control; Embedded system; Jitter; Processor scheduling; Real time systems; Sampling methods; Scheduling algorithm; Stability criteria; Fault injection; Fault tolerance; Real-time and embedded systems; Scheduling;

fLanguage

English

Publisher

ieee

Conference_Titel

Real-Time Systems, 2008. ECRTS '08. Euromicro Conference on

Conference_Location

Prague

ISSN

1068-3070

Print_ISBN

978-0-7695-3298-1

Type

conf

DOI

10.1109/ECRTS.2008.14

Filename

4573105