Rust
Performance
Allocators
Build Configuration - The Rust Performance Book
cargo add mimalloc
#![allow(unused)]
fn main() {
#[cfg(not(miri))]
#[global_allocator]
static ALLOC: mimalloc::MiMalloc = mimalloc::MiMalloc;
}Cargo profiles
# https://nnethercote.github.io/perf-book/build-configuration.html
[profile.release]
codegen-units = 1
lto = "fat"
# https://github.com/mstange/samply#turn-on-debug-info-for-full-stacks
[profile.profiling]
inherits = "release"
debug = true
Tools
See also this section of the Rust Performance Book.
dhat
Quickstart:
cargo add --optional dhat
In Cargo.toml:
[features]
dhat = ["dep:dhat"]
In main.rs:
#[cfg(feature = "dhat-heap")]
#[global_allocator]
static ALLOC: dhat::Alloc = dhat::Alloc;
Then:
cargo build --profile=profiling --features dhat -- your args here
Safety
cargo-careful
cargo careful is a tool to run your Rust code extra carefully – opting into a bunch of nightly-only extra checks that help detect Undefined Behavior, and using a standard library with debug assertions.
cargo +nightly install cargo-careful
cargo +nightly fetch
cargo +nightly careful build -Zcareful-sanitizer=address --target=x86_64-unknown-linux-gnu --tests --frozen
cargo +nightly careful test -Zcareful-sanitizer=address --target=x86_64-unknown-linux-gnu --frozen
Scudo
cargo add scudo
#![allow(unused)]
fn main() {
#[cfg(all(not(miri), debug_assertions))]
#[global_allocator]
static ALLOC: scudo::GlobalScudoAllocator = scudo::GlobalScudoAllocator;
}