What is Tiered Compilation in JVM?

Tiered Compilation in JVM

Tiered compilation is a feature of the Java Virtual Machine (JVM) that was introduced in Java 8. It improves the performance of compiled Java code with the help of multiple compilation levels. Instead of relying on the traditional method of having just one compilation phase, tiered compilation uses multiple compilation levels to improve the performance of the code. Each level is tailored for specific runtime conditions. By using the multiple compilation levels, the time required for compilation and optimization is reduced, leading to faster code execution.

Benefits of Tiered Compilation

• Improved Performance: Tiered Compilation can significantly improve the performance of Java code. By compiling code multiple times, the compiler can use more advanced techniques and optimizations, leading to better-performing code.
• Reduced Compilation Time: Tiered Compilation reduces the total compilation time by running parts of the compilation process in multiple stages. This allows the compiler to detect and compile only the parts of the code that need to be recompiled while skipping other parts of the code.
• Code Optimization: Different levels of compilation are used to optimize the code, leading to more efficient code execution. Optimizations such as inlining and dead-code removal can be applied at each stage, leading to improved performance.

Conclusion

Tiered Compilation is an essential feature of the Java Virtual Machine that helps improve the performance of Java applications. It enables the compiler to compile code multiple times, allowing for more advanced optimizations and faster code execution. Overall, Tiered Compilation is an important part of the JVM that allows for better performance of Java code.