Everything is slower than C (I havenβt seen a benchmark yet where a language bests C; even hand-crafted ASM ceded the high ground decades ago when compilers got better than human assembly programmers), but then, C compiler technology has had literally 40+ years to mature.
Go and Java (once warm) do pretty well, but absolutely give up execution speed for coding simplicity and (in Goβs case, anyway) speed. Nim is young; Iβm curious to see how it matures. Theyβre having a bit of a performance crisis at the moment, but assuming they get past that it seems like a fair middle ground between Goβs simplicity and Rustβs bare-metal performance. Then again, manual memory management was absolutely my least favorite thing about C and is what eventually drove me away; worst. Boilerplate. Ever. Even worse than Goβs error handling (which they almost fixed and looks like will be addressed within the next free releases). Anyhoo, going back to that shit is going to be a hard pill to swallow.
Rust is still having its honeymoon, and is the hip language of the decade now. Weβll see!
Rust is roughly similar to C in most of these benchmarks and beats it in a few: https://benchmarksgame-team.pages.debian.net/benchmarksgame/fastest/rust.html
Arguably when LLVM gets a bit better, Rust can be even faster than C because rust can be optimised in more places safely than C code can. The issue is that LLVM wasnβt written with that in mind, so some performance is left on the table.
