[Tostino]

You may reduce ram, but also performance. A good JIT costs ram.

[fbouvier]

Yes, that's true. It's a balance to find between RAM and speed.

I was thinking more on use cases that require to disable JIT anyway (WASM, iOS integration, security).

[Tostino]

Yeah, could be nice to allow the user to select the type of ECMAScript engine that fits their use-case / performance requirements (balancing the resources available).

[cxr]

If your target is consistent enough (perhaps even stationary), then at some point "JIT" means wasting CPU cycles.