Re: Rust: kernel vs user-space

D

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ManiaC++
Jan Knepper

> On Sep 4, 2024, at 05:09, Mark Delany <x9k@charlie.emu.st> wrote:
> 
> I hesitate to step into this discussion but is it worth making the distinction between
> Rust in the kernel and Rust in user-space?
> 
> I can see the argument for introducing a "safer" language into the kernel and there are
> very few candidates available: perhaps only Rust, C++ and Zig. Clearly if that step is to
> be made, it probably should pick one language and run with it.
> 
> That's one discussion.
> 
> As for user-space, I find the rationale for Rust as the one-true-language-after-C far less
> compelling as many CLIs and server programs can just as well be written in more accessible
> languages such as go or perl or java or...
> 
> Frankly I no longer write any CLI or server code in C even after decades of doing so
> because the trade-off between development costs and performance is far less compelling in
> user-space. If my once-a-week invocation of a command requires a bit more memory and CPU
> than one written in C, is that really important compared to how much easier the command is
> to maintain and enhance?
> 
> Point being, on the matter of introducing Rust to FreeBSD, I think the distinction between
> kernel and user-space is worth keeping in mind as they are quite different problems.
> 
> 
> Mark.
>