Build settings in binary crates via cargo install and crates.io (opens in new tab)

You can drastically change the performance of a Rust program without changing its code, just by changing its build configuration. There are many possible build configurations for each Rust program. The one chosen will affect several characteristics of the compiled code, such as compile times, runtime speed, memory use, binary size, debuggability, profilability, and which architectures your compiled program will run on.