Title :
Analysis of checkpointing for schedulability of real-time systems
Author :
Punnekkat, Sasikumar ; Burns, Alan
Author_Institution :
Dept. of Comput. Sci., York Univ., UK
Abstract :
Checkpointing is a relatively cost effective method for achieving fault tolerance in real-time systems. Since checkpointing schemes depend on time redundancy, they could affect the correctness of the system by causing deadlines to be missed. This paper provides exact schedulability tests for fault tolerant task sets under specified failure hypothesis and employing checkpointing to assist in fault recovery. The effects of checkpointing strategies on task response time are analysed and some insights for optimal checkpointing are provided. The emphasis here is on utilizing this analysis as an off-line design support tool
Keywords :
fault tolerant computing; processor scheduling; real-time systems; checkpointing; exact schedulability tests; failure hypothesis; fault recovery; fault tolerance; fault tolerant task sets; off-line design support tool; real-time systems; schedulability; task response time; time redundancy; Checkpointing; Costs; Database systems; Fault tolerance; Fault tolerant systems; Hardware; Processor scheduling; Real time systems; Redundancy; Testing;
Conference_Titel :
Real-Time Computing Systems and Applications, 1997. Proceedings., Fourth International Workshop on
Conference_Location :
Taipei
Print_ISBN :
0-8186-8073-3
DOI :
10.1109/RTCSA.1997.629219
