Sciweavers

RTSS
1995
IEEE

Enhancing Real-Time Schedules to Tolerate Transient Faults

14 years 3 months ago
Enhancing Real-Time Schedules to Tolerate Transient Faults
We present a scheme to guarantee that the execution of real-time tasks can tolerate transient and intermittent faults assuming any queue- based scheduling technique. The scheme is based on reserving suficient slack in a schedule such that a task can be re-executed before its deadline without compromising guarantees given to other tasks. Only enough slack is reserved in the schedule to guarantee fault tolerance if at most one fault occurs within a time interval. This results in increased schedulability and a very low percentage of deadline misses even if no restriction is placed on the fault separation. W e provide two algorithms to solve the problem of adding fault tolerance to a queue of real-time tasks. The first is a dynamic programming optimal solution and the second is a greedy heuristic which closely approzimates the optimal.
Sunondo Ghosh, Rami G. Melhem, Daniel Mossé
Added 26 Aug 2010
Updated 26 Aug 2010
Type Conference
Year 1995
Where RTSS
Authors Sunondo Ghosh, Rami G. Melhem, Daniel Mossé
Comments (0)