think it’s fair to say performance rust is hard to write
This situation proved exactly the opposite.
They wrote a utility to pass functional tests. It did. Then people said it was too slow. So, in just a few days or hours, they dramatically sped it up while still passing the tests.
Seems like it was pretty easy to write fast Rust code in this case.
Fair point. I am mostly going on what I have seen others do on streams when comparing rust and go. Go seemed faster to get good performance and rust sometimes had to write a ton of code to get the same performance.
I don’t know if you can selectively not use Go’s garbage collector, but that seems to be the only reason Go might be theoretically slower than rust.
The ill-informed Rust hatred goes in the Phoronix comments. Rust isn’t inherently slower than C. This was a bug.
Looks like it wasn’t even a bug, just a missed opportunity to use SIMD.
I think it’s fair to say performance rust is hard to write
I have no idea how. I write better Rust than I do C 🤷♂️
Rust and C are basically identical in terms of performance (more or less). Idk where the myth that Rust is somehow less performant than C came from.
This situation proved exactly the opposite.
They wrote a utility to pass functional tests. It did. Then people said it was too slow. So, in just a few days or hours, they dramatically sped it up while still passing the tests.
Seems like it was pretty easy to write fast Rust code in this case.
Fair point. I am mostly going on what I have seen others do on streams when comparing rust and go. Go seemed faster to get good performance and rust sometimes had to write a ton of code to get the same performance.
I don’t know if you can selectively not use Go’s garbage collector, but that seems to be the only reason Go might be theoretically slower than rust.
Harder than C?
I think I am conflating “harder” and “have to write more code”
Fair!
What makes you say that?