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An experiment in software reliability
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Author and Affiliation:
Dunham, J. R.(Research Triangle Inst., Research Triangle Park, NC, United States)
Pierce, J. L.(Research Triangle Inst., Research Triangle Park, NC, United States)
Abstract: The results of a software reliability experiment conducted in a controlled laboratory setting are reported. The experiment was undertaken to gather data on software failures and is one in a series of experiments being pursued by the Fault Tolerant Systems Branch of NASA Langley Research Center to find a means of credibly performing reliability evaluations of flight control software. The experiment tests a small sample of implementations of radar tracking software having ultra-reliability requirements and uses n-version programming for error detection, and repetitive run modeling for failure and fault rate estimation. The experiment results agree with those of Nagel and Skrivan in that the program error rates suggest an approximate log-linear pattern and the individual faults occurred with significantly different error rates. Additional analysis of the experimental data raises new questions concerning the phenomenon of interacting faults. This phenomenon may provide one explanation for software reliability decay.
Publication Date: May 01, 1986
Document ID:
19860020075
(Acquired Nov 04, 1995)
Accession Number: 86N29547
Subject Category: COMPUTER PROGRAMMING AND SOFTWARE
Report/Patent Number: NASA-CR-172553, NAS 1.26:172553, REPT-412U-2094-12, REPT-412U-2094-14
Coverage: Final Report
Document Type: Technical Report
Publisher Information: United States
Contract/Grant/Task Num: NAS1-16489
Financial Sponsor: NASA; United States
Organization Source: Research Triangle Inst.; Research Triangle Park, NC, United States
Description: 62p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: AIRBORNE/SPACEBORNE COMPUTERS; COMPUTER PROGRAM INTEGRITY; COMPUTER PROGRAMMING; FAULT TOLERANCE; FLIGHT CONTROL; RELIABILITY ANALYSIS; SOFTWARE ENGINEERING; COMPUTER SYSTEMS SIMULATION; ERRORS; FAILURE ANALYSIS; RADAR TRACKING
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