Take advantage of memory analyzer tool inside your continuous integration
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The document discusses the benefits of using the Memory Analyzer Tool (MAT) within continuous integration processes, highlighting methods for performing programmatic heap dumps, report generation, and CI integration. It emphasizes detecting memory leaks through various testing stages, including unit and performance tests. Additionally, it suggests improvements for integrating MAT with CI tools like Jenkins and Hudson for better report management and threshold definitions.
Take advantage of memory analyzer tool inside your continuous integration
- 1. Take advantage of Memory Analyzer Tool inside your Continuous Integration Aurélien Pupier R&D Engineer, Studio Development Leader @apupier ©2014 Bonitasoft
- 2. Agenda • Why using MAT? • How to –Programmatic Heap Dump –Choose your report –Headless report generation –CI integration • Going further ©2013 Bonitasoft 2
- 3. Why using MAT? ©2013 Bonitasoft 3
- 4. Before – how we detect Memory Leak? (1/3) • Manual QA tests ©2013 Bonitasoft 4
- 5. Before – how we detect Memory Leak? (2/3) • Client ©2013 Bonitasoft 5
- 6. Before – how we detect Memory Leak? (3/3) • Dumb performance tests – Dedicated test suite – Open 100 diagrams – Only very big OOM – Check no crash ©2013 Bonitasoft 6
- 7. Unit Test Integration Test Performance Test Manual QA Test Client Detect early ©2013 Bonitasoft 7 It’s complicated It’scomplicated
- 10. Programmatic Heap Dump ©2013 Bonitasoft 10
- 11. Heap Dumper Java code • Mbean – com.sun.management:type=HotSpotDiagnostic • JVM-specific ©2013 Bonitasoft 11
- 12. When? • All tests played and finished – Memory should be clean – Take care to close everything • End of Test Suite ©2013 Bonitasoft 12
- 14. Plug-in specificity • Extension point used – Avoid JVM dependency • Extract interface for HeapDumper • Close project Eclipse compiler mic-mac ©2013 Bonitasoft 14
- 15. Global picture ©2013 Bonitasoft 15 MBean provider Heap Dumper Extension point Test suite executor Heap Dumper Provider
- 16. Choose your report Find your happiness… or create it ©2013 Bonitasoft 16
- 18. Custom report • AllTests_custom_htmlindex.html ©2013 Bonitasoft 18
- 19. Headless report generation MAT – “There’s an app for that” ©2013 Bonitasoft 19
- 20. Headless report generation • Generate report – org.eclipse.mat.api.parse <dumpFile> <reportId> – Leak suspects id: org.eclipse.mat.api:suspects • Unzip reports – Keep <report-name>_html – Clean folder • *.zip • *.index • *.threads ©2013 Bonitasoft 20
- 22. Build steps – Generate report ©2013 Bonitasoft 22
- 23. Build steps – Use reports ©2013 Bonitasoft 23
- 25. Fail the build • Custom script parsing report – Custom for each report – Define your own thresholds • Last build step • Return value != 0 ©2013 Bonitasoft 25
- 27. Possible improvements • Provide an Hudson/Jenkins plugin for MAT – Download – Pre-defined list of available reports – Pre-defined thresholds to fail the build – Conditional Launch (only for Nightly?) – Group reports • MAT – Allow to return a status code when generating report – Handle thresholds – Use compare feature ©2013 Bonitasoft 27
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