Gulaschprogrammiernacht 21

Do you trust profilers? I once did too

Johannes Bechberger

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• eng 1080p (mp4)
• eng 1080p (webm)
• eng 576p (mp4)
• eng 576p (webm)

• 32 min
• 2023-06-11
• 211
• Fahrplan

Profilers are great tools in your toolbox, like debuggers, when solving problems with your Java application (I've been on a podcast on this topic recently). I'll tell you some of their problems and a technique to cope with them in this talk.

There are many open-source profilers, most notably JFR/JMC, and async-profiler, that help you to find and fix performance problems. But they are just software themself, interwoven with a reasonably large project, the OpenJDK (or OpenJ9, for that matter), and thus suffer from the same problems as the typical problems of application they are used to profile.

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