CPU Monitor

A real-time CPU monitoring application built with Rust.

Tracks overall CPU usage and individual core performance with multi producer single consumer channels.

Screenshots in reverse chronological order

Requirements

• Rust 1.70 or later
• Windows/Linux/macOS (any platform supported by sysinfo)

Installation

1. Clone the repository:

   git clone https://github.com/yourusername/cpu-monitor.git
   cd cpu-monitor

2. Build the project:

   cargo build --release

Usage

Run the application:

cargo run --release

The GUI will open showing:

• Overall CPU usage with progress bar and graph
• Per-core CPU usage for each processor
• Current process count
• System information panel

Snapshots update every 100ms. If you wish to change this, change the const REFRESH_MILLISECONDS in src/config/app_variables.

Architecture

The application is structured as follows:

• Main entry point (src/main.rs): Sets up communication channels and starts background workers
• App logic (src/app/): Handles GUI updates, state management, and data processing
• Workers (src/workers/): Background threads collecting CPU, process, and system data
• Snapshots (src/snapshots/): Data structures for system information
• Graph rendering (src/graph/): Drawing utilities for charts and progress bars
• Configuration (src/config/): Constants for layout, styling, and behavior

Data flows from background workers through multi-producer-single-consumer channels to the main GUI thread.

Dependencies

• eframe: For the GUI framework
• egui: UI components and rendering
• sysinfo: System information collection
• std::sync::mpsc: Inter-thread communication

Known Issues

• On Windows, the GUI is in light mode while on MacOS the GUI is in dark mode.
• On MacOS, the number of processes shown will be different than that in the Activity Monitor, this is because MacOS often bundles together related processes as one.

License

MIT License

Acknowledgments

Built with Rust, egui, and sysinfo. c:\Users\liujo\OneDrive\Documents\CPU-Monitor\README.md