From Java and Scala to Assembly

Explore the intricacies of performance optimization in Java and Scala programming languages in this 3-hour conference talk from Devoxx. Delve into common performance myths and misconceptions, challenging assumptions about code efficiency. Gain insights into the complex layers between high-level code and machine instructions, and learn how to analyze performance down to the "bare metal." Utilize cutting-edge tools such as JITWatch, javap, GC logs, JMH, and performance counters to dissect and understand code behavior. Examine fascinating examples of Scala code snippets and their assembly-level counterparts. Discover techniques to measure and verify performance claims, empowering you to make informed decisions about code optimization. Suitable for developers seeking to deepen their understanding of JVM performance and those interested in the latest advancements, including Graal compiler technology.

from Java and Scala to assembly by Jarek Ratajski