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ORTEGA: An Efficient and Flexible Software Fault Tolerance Architecture for Real-Time Control Systems

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ORTEGA: An Efficient and Flexible Software Fault Tolerance Architecture for Real-Time Control Systems
Fault tolerance is an important aspect in real-time computing. In real-time control systems, tasks could be faulty due to various reasons. Faulty tasks may compromise the performance and safety of the whole system and even cause disastrous consequences. In this paper, we describe ORTEGA (On-demand Real-TimE GuArd), a new software fault tolerance architecture for real-time control systems. ORTEGA has high fault coverage and reliability. Compared with existing real-time fault tolerance architectures, such as Simplex, ORTEGA allows more efficient resource utilizations and enhances flexibility. These advantages are achieved through the on-demand detection and recovery of faulty tasks. ORTEGA is applicable to most industrial control applications where both efficient resource usage and high fault coverage are desired.
Xue Liu, Hui Ding, Kihwal Lee, Qixin Wang, Lui Sha
Added 07 Dec 2010
Updated 07 Dec 2010
Type Conference
Year 2008
Where ECRTS
Authors Xue Liu, Hui Ding, Kihwal Lee, Qixin Wang, Lui Sha
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