J-Fall 2023: Write your own Java Profiler in 240 lines of pure Java – Johannes Bechberger
Profilers help to analyze performance bottlenecks of your application if you know how to use them. To get to grips with profilers, it helps to understand how they work: Profilers aren’t rocket science. A usable Java profiler can be written in 240 lines of pure Java code, helping you to fix performance issues and add custom features fast. This talk will give the fundamentals of Java profiling and how Java profilers typically work, followed by a detailed explanation of how to develop a functioning profiler in a few lines of Java code. This talk will also explain how you can use it in production to analyze performance issues and show briefly how to work with a widely used open-source profiler that is based on the same principles.
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