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Software-implemented fault insertion: An FTMP exampleThis report presents a model for fault insertion through software; describes its implementation on a fault-tolerant computer, FTMP; presents a summary of fault detection, identification, and reconfiguration data collected with software-implemented fault insertion; and compares the results to hardware fault insertion data. Experimental results show detection time to be a function of time of insertion and system workload. For the fault detection time, there is no correlation between software-inserted faults and hardware-inserted faults; this is because hardware-inserted faults must manifest as errors before detection, whereas software-inserted faults immediately exercise the error detection mechanisms. In summary, the software-implemented fault insertion is able to be used as an evaluation technique for the fault-handling capabilities of a system in fault detection, identification and recovery. Although the software-inserted faults do not map directly to hardware-inserted faults, experiments show software-implemented fault insertion is capable of emulating hardware fault insertion, with greater ease and automation.
Document ID
19880005286
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Czeck, Edward W. (Carnegie-Mellon Univ. Pittsburgh, PA, United States)
Siewiorek, Daniel P. (Carnegie-Mellon Univ. Pittsburgh, PA, United States)
Segall, Zary Z. (Carnegie-Mellon Univ. Pittsburgh, PA, United States)
Date Acquired
September 5, 2013
Publication Date
October 1, 1987
Subject Category
Computer Systems
Report/Patent Number
NAS 1.26:178423
NASA-CR-178423
Accession Number
88N14668
Funding Number(s)
CONTRACT_GRANT: NAG1-190
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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