An Estonian startup called Plumbr is developing a Java agent that runs alongside applications to detect and solve performance problems like memory leaks. They aim to support Java on multiple platforms including Windows, Linux, Mac OS X and Solaris. Their goals include building an automated infrastructure for testing on all platforms. They use tools like Jenkins, BitBucket and Artifactory in their continuous integration and release processes which includes testing, building nightly versions, and releasing new versions.

1. Multiplatform Java
application development
Nikita Salnikov-Tarnovski
@iNikem
http://plumbr.eu
Monday, October 21, 13

2. Plumbr company
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Estonian startup trying to solve performance problems
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We started with memory leaks and solved them :)
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Ongoing effort, more problems to be solved
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Monday, October 21, 13

3. Plumbr software
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Java agent, runs alongside your application
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Uses Instrumentation API to hook into your code
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Native counterpart in platform-specific C code
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Monday, October 21, 13

4. “External” Goals
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To support java 5, 6, 7, JRockit, IBM JVM
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To support Windows, Linux, Mac OS X, Solaris Sparc and
Solaris x86
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Not the last versions only
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5. “Inner” goals
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Build infrastructure as automated as possible
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Automatic tests on all platforms
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Release maintenance vs future development
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Traceability
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6. Forward Traceability
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7. Backward traceability
1.2
1.3
2.0
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2.1
2.1.3

8. Our team
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9. One
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10. Two
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11. Virtually three
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12. Mini hero
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13. Ancient legend
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14. Mastermind
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15. Native part
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Small subproject in C, rarely updated
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Lives in BitBucket as well
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Jenkins builds it with make
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Then publishes to Artifactory
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16. The problem of libc
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We build native part on AWS instance
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But we need old enough libc
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Have to use chroot with older system
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17. CI
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Jenkins builds whole project on every commit
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Runs fast tests, collects metrics
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Pushes all artifacts to ‘builds’ repo
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18. Test pipeline
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All those environments are put into Jenkins pipeline
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Runs every night
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Downloads given version from ‘builds’ repo and runs full
acceptance tests suite
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19. Acceptance test
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End-to-end test
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Leaking application is started and used
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Plumbr’s report is then verified
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20. Nightly
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If whole pipeline succeeds, pushes that tested version to
‘nightly’ repo
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Updates downloadable version on our site
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21. Release
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Another job in Jenkins
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Lets you select version number from JIRA
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Pushes ready version from ‘nightly’ to ‘release’ repo
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Tags Mercurial revision corresponding to that version with
JIRA version tag
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Updates Plumbr download page with new version
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22. Live fix
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23. Conclusion
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WORA does not mean T(est)ORA
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There are more to Java than Hotspot
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We are blessed by not writing C
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Tools matter a lot
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Monday, October 21, 13

24. Solving performance problems is hard.
We don’t think it needs to be.
@iNIkem/@JavaPlumbr
plumbr.eu
Monday, October 21, 13