Java's segmented code cache upgrade was completed and results in faster, more efficient execution time. At the core of this change was the segmentation of the code cache into three distinct segments—non-method, profiled, and non-profiled code.
A code cache is the area of memory where the JVM stores generated native code.
Each of the aforementioned code cache segments will hold a specific type of compiled code. As you can see in the following diagram, the code heap areas are segmented by type of compiled code:
