What are the performance differences between JIT and AOT compilation?

What are the performance differences between JIT and AOT compilation?

JIT (Just-In-Time) compilation compiles code at runtime, which can lead to faster execution for certain workloads. AOT (Ahead-Of-Time) compilation, on the other hand, compiles code before execution, which can result in faster startup times and more predictable performance.

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

Sure! JIT is often preferred in scenarios where the application has dynamic code paths or requires frequent updates, like in web applications. AOT is better for applications where startup time is critical, such as mobile apps.

What are the trade-offs between JIT and AOT?

The main trade-offs include execution speed versus startup time. JIT can optimize performance during execution but may have longer startup times, while AOT offers quicker startup but may not optimize as effectively during runtime.

How do JIT and AOT affect memory usage?

JIT can use more memory due to runtime compilation and caching, while AOT typically has a more predictable memory footprint since everything is compiled ahead of time.