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A comment on Tiny JITs for a Faster FFI. Parent comment

Re:Tiny JITs for a Faster FFI by fredrikholm on Thursday February 13, 2025 @06:57AM (#43035021)
Thank you for a great answer; I did not mean any ill will and apologize if that was how it came across.

Perl, Tcl, Smalltalk etc are basically non-existant from where I'm from, so they didn't occur to me.

Perhaps I'm projecting a lot here. I have worked a lot in high performance systems and am often triggered by claims of performance, eg. 'X is faster than C' when this is 99.9% of the times false by two orders of magnitude. This didn't happen here.

Thank you for taking the time to answer.

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Re:Tiny JITs for a Faster FFI by Lio on Thursday February 13, 2025 @07:26AM (#43035199)
> I did not mean any ill will and apologize if that was how it came across.

Oh not at all, no I didn't think that. I'm enjoying the conversation.

It's interesting that you mention Smalltalk as I believe that some of the JIT ideas we're seeing in YJIT are borrowed from there.

All the "faster than C" talk here is very specific to ruby (or JIT'd) runtimes and overheads only in that context.

I think it gets mentioned because it seems so counter intuitive at first. It's not to imply C isn't orders of magnitude faster in general.

Along with the new out of the box features of Rails 8, the work on Ruby infrastructure is making it an exciting technology to work with again (IMHO).

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Re:Tiny JITs for a Faster FFI by weaksauce on Thursday February 13, 2025 @03:07PM (#43040639)
the ruby is faster than c is because of the yjit. they are moving a lot of c ruby standard library and core language stuff into ruby code so the yjit can optimize it better. akin to java and their bytecode being able to optimize things on the fly instead of just once at compile time.
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Re:Tiny JITs for a Faster FFI by pjmlp on Thursday February 13, 2025 @04:51PM (#43041848)
Java's Hotspot was originally designed for Smalltalk, and SELF.

Two very dynamic systems, designed for being a complete graphical workstation, Perl, Tcl, Python, Ruby were as originially implemented, not even close of the original Smalltalk JIT paper from Peter Deutsch's paper"Efficient Implementation of the Smalltalk-80 System." in 1984!

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