Setting a wallpaper in less than 250 Kb: A practical guide to reducing Rust's ru
11 days ago
- #Rust
- #Memory Optimization
- #Systems Programming
- Techniques to reduce Rust binary runtime RAM usage, focusing on practical applications.
- Use of the no-libc-daemon branch for minimal memory footprint (230 Kb idle).
- Memory mapping for initial image loading, promptly unmapped to save memory.
- Comparison between no-libc-daemon (Linux only) and main branch (2.3 Mb idle).
- Discussion on the impracticality of extreme binary size reduction techniques in real-world projects.
- Strategies for reducing memory usage without sacrificing functionality, including alternatives to Rust's std.
- Importance of measuring memory usage with tools like cargo-bloat and ps.
- Custom wayland client implementation (waybackend) for memory efficiency.
- Avoiding storing image bytes by relying on the compositor's memory management.
- Replacing std with rustix for direct syscall usage and memory savings.
- Challenges and solutions for path handling without std::path.
- Manual implementation of environment variable access and thread/process spawning without std.
- Custom panic handler for no-std environments.
- Eliminating libc dependency using origin and talc for memory allocation.
- Techniques to limit allocations, including using smallvec and German Strings.
- Reducing generics usage to minimize code size and memory footprint.
- Optimizing struct sizes and manual implementation of Rc<RefCell<T>>.
- Custom logging implementation to reduce binary size.
- Manual parsing of CStr for no-std environments.