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We've implemented network drivers in C and Rust and did a performance comparison. Interestingly, the C-to-Rust-transpiled code ended up being faster than the original C implementation: https://github.com/ixy-languages/ixy-languages/blob/master/R...


https://github.com/emmericp/ixy/blob/0e00605be4153b06df06184...

Looks like you're compiling C code with -O2. Does Rust build set -O3 on clang? Did you try -O3 with C? I know it's not guaranteed to be faster, just curious.


It looks like the answer is "yes"

https://doc.rust-lang.org/cargo/reference/profiles.html#rele...


Then a fair benchmark would be compiling C code with clang -O3 :)


Good catch




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