Reliability Requirements

Reliability RequirementsReliability Requirements

Agenda

• Reliability requirements• Eliminating unnecessary restarts• Application Verifier• Windows Error Reporting (WER)• Reliability test cases

Reliability Requirements

• Eliminate unnecessary restarts• Eliminate application failures

Agenda

• Reliability requirements• Eliminating unnecessary restarts• Application Verifier• Windows Error Reporting (WER)• Reliability test cases

Eliminating Unnecessary Restarts

• Use the Restart Manager API• Be “Restart Manager-aware”• Functionality provided by Windows

Installer

Agenda

• Reliability requirements• Eliminating unnecessary reboots• Application Verifier• Windows Error Reporting (WER)• Reliability test cases

Application Verifier

• Enables fixing of application failures• Carries out tests on applications• Basic tests:

– Exceptions– Handles– Heaps– Locks– Memory– Thread Local Storage (TLS)

• Low resource simulation• Least-Privileged User Account (LUA) Predictor• Miscellaneous tests:

– DangerousAPIs– Dirty Stacks

Agenda

• Reliability requirements• Eliminating unnecessary reboots• Application Verifier• Windows Error Reporting (WER)• Reliability test cases

Windows Error Reporting

• Mini-dump of crash reported to Microsoft

• ISVs access crash data through Developer Portal

• Clients that crash in the future are directed to the solution

Windows Error Reporting Requirements

• Do not disable WER• Sign up to receive crash data• Map applications to company• ISVs MUST fix 60% of crash volume• ISVs MUST maintain an average fix

rate of 10 buckets per month • ISVs can issue patches and service

packs through the Windows Developer Portal

Windows Error ReportingWindows Error Reporting

Agenda

• Reliability requirements• Eliminating unnecessary restarts• Application Verifier• Windows Error Reporting (WER)• Reliability test cases

Reliability Test Cases

• Verify application is Restart Manager-aware

• Verify application does not break into debugger with the specified AppVerifier checks

• Verify application’s UI thread handles only exceptions that are known and expected

Summary

• Reliability requirements• Eliminating unnecessary restarts• Application Verifier• Windows Error Reporting (WER)• Reliability test cases

Additional Resources

• Restart Managerhttp://msdn.microsoft.com/library/default.asp?url=/library/en-us/rstmgr/rstmgr/about_restart_manager.asp

• AppVerifierhttp://www.microsoft.com/downloads/

• Windows Error Reportinghttp://msdn.microsoft.com/isv/resources/wer/