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Measurement and analysis of workload effects on fault latency in real-time systemsThe authors demonstrate the need to address fault latency in highly reliable real-time control computer systems. It is noted that the effectiveness of all known recovery mechanisms is greatly reduced in the presence of multiple latent faults. The presence of multiple latent faults increases the possibility of multiple errors, which could result in coverage failure. The authors present experimental evidence indicating that the duration of fault latency is dependent on workload. A synthetic workload generator is used to vary the workload, and a hardware fault injector is applied to inject transient faults of varying durations. This method makes it possible to derive the distribution of fault latency duration. Experimental results obtained from the fault-tolerant multiprocessor at the NASA Airlab are presented and discussed.
Document ID
19900041358
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Woodbury, Michael H. (Bell Communications Research, Inc. Piscataway, NJ, United States)
Shin, Kang G. (Michigan, University Ann Arbor, United States)
Date Acquired
August 14, 2013
Publication Date
February 1, 1990
Publication Information
Publication: IEEE Transactions on Software Engineering
Volume: 16
ISSN: 0098-5589
Subject Category
COMPUTER SYSTEMS
Funding Number(s)
CONTRACT_GRANT: NGT-23-005-801
CONTRACT_GRANT: NAG1-296
CONTRACT_GRANT: NAG1-492
Distribution Limits
Public
Copyright
Other