Project Valhalla introduces value types into the Java language and virtual machine. Value types can be more efficient since they do not need pointer indirection and heap allocation. Moreover, Valhalla will lead to a more regular object model, unifying primitive types and their boxed types, and to simpler parameterized types. In this presentation, you will learn about the present state of the project. More importantly, you will learn how to observe what Valhalla does, through JMH benchmarks, Java Flight Recorder, JITWatch, the Java Object Layout tool, and others. With that knowledge, you are ready to evaluate the impact of Valhalla on your own Java workloads.

Observing Project Valhalla by Cay Horstmann