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Software Reliability Analysis DSES-6070 Statistical Methods for Reliability Engineering. Jen Gray 8/11/2008. Contents. Background Objective Analysis Conclusion. Background. Vista, Solumina , SAP… . Background. Vista, Solumina , SAP… what do they have in common?. Background.
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Software Reliability AnalysisDSES-6070 Statistical Methods for Reliability Engineering Jen Gray 8/11/2008
Contents • Background • Objective • Analysis • Conclusion
Background • Vista, Solumina, SAP…
Background • Vista, Solumina, SAP… what do they have in common?
Background • Vista, Solumina, SAP… what do they have in common?
Background • Vista, Solumina, SAP… what do they have in common? • Avoid Costs of Faulty Product • 1700+ Hours of Testing • How Much Testing is Required?
Objective • Determine if Software is Ready for Release • Failure Rate < 0.005 Failures / Hour • Estimate Additional Test Time
Analysis • 84 Data Points
Analysis • Weibull Distribution
Analysis • Weibull Distribution
Analysis • Failure Rate Reduction
Conclusion • Product Not Ready for Release • Approximately 2500- 3000 Additional Hours Needed