Task Feasibility Analysis and Dynamic Voltage Scaling in Fault-Tolerant Real-Time Embedded Systems
DUKE UNIV DURHAM NC DEPT OF ELECTRICALAND COMPUTER ENGINEERING
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We investigate dynamic voltage scaling DVS in realtime embedded systems that use checkpointing for fault tolerance. We present feasibility-of-scheduling tests for checkpointing schemes for a constant processor speed as well as for variable processor speeds. DVS is then carried out on the basis of the feasibility analysis. We incorporate practical issues such as faults during checkpointing and state restoration, rollback recovery time, memory access time and energy, and DVS overhead. Simulation results are presented for real-life checkpointing data and embedded processors.
- Operations Research
- Computer Systems
- Electric Power Production and Distribution