[jmacjmac]

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.

[dralley]

It looks like the answer is "yes"

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

[jmacjmac]

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

[Shadonototro]

Good catch