What are the performance differences between AOT and JIT compilation?

What are the performance differences between AOT and JIT compilation?

AOT (Ahead-Of-Time) compilation generates machine code before execution, while JIT (Just-In-Time) compiles code during execution. AOT typically results in faster startup times and lower runtime overhead, but JIT can optimize code based on actual usage patterns.

Can you give me examples of when to use AOT over JIT?

Sure! AOT is ideal for applications where startup time is critical, like mobile apps or embedded systems. JIT is better for applications that require dynamic optimizations, such as web applications that may change frequently.

What are the trade-offs of using AOT and JIT?

The trade-offs include AOT's longer build times and less flexibility in optimization versus JIT's potential for higher memory usage and slower startup times. Choosing between them depends on the specific needs of your application.

How do AOT and JIT affect memory usage?

AOT generally uses less memory at runtime since the code is precompiled, while JIT may consume more memory due to the need for runtime compilation and optimization.