What are the performance impacts of JIT vs AOT compilation?

What are the performance impacts of JIT vs AOT compilation?

JIT (Just-In-Time) compilation optimizes code at runtime, while AOT (Ahead-Of-Time) compilation does it before execution. JIT can lead to faster execution for certain workloads, but AOT can provide better startup performance and lower memory usage.

Can you explain when to use JIT and when to use AOT?

Use JIT when you need maximum performance for long-running applications, as it optimizes code based on actual usage. AOT is better for applications where startup time is critical, like mobile apps or embedded systems.

What are some examples of languages that use JIT and AOT?

Languages like Java and C# typically use JIT compilation, while languages like C and C++ often use AOT compilation.

Are there any trade-offs between JIT and AOT?

Yes, JIT can lead to higher memory usage and longer startup times, while AOT can result in less flexibility and potentially slower execution for dynamic workloads.