Coding With Fun
Home Docker Django Node.js Articles Python pip guide FAQ Policy

Which is faster, static compilation or jit compilation?


Asked by Tobias Beil on Dec 01, 2021 FAQ



JIT compilation is a form of dynamic compilation, and allows adaptive optimization such as dynamic recompilation and microarchitecture -specific speedups – thus, in theory, JIT compilation can yield faster execution than static compilation.
One may also ask,
Static compilation converts the code into a language for a specific platform. An interpreter directly executes the source code. JIT compilation attempts to use the benefits of both. While the interpreted program is being run, the JIT compiler determines the most frequently used code and compiles it to machine code.
In addition, Dynamic compilation has some advantages over static compilation. When running Java or C# applications, the runtime environment can profile the application while it is being run. This allows for more optimized code to be generated.
Just so,
JIT compilation attempts to use the benefits of both. While the interpreted program is being run, the JIT compiler determines the most frequently used code and compiles it to machine code. Depending on the compiler, this can be done on a method or smaller section of code.
Indeed,
You are right that JIT adds to start-up cost, and so there is a time-constraint for it, whereas ahead-of-time compilation can take all the time that it wants. This makes it more appropriate for server-type applications, where start-up time is not so important and a "warm-up phase" before the code gets really fast is acceptable.