space-radar

Space Radar

SpaceRadar allows interactive visualization of disk space and memory. It currently supports Sunburst, Treemap, and Flamegraph charts.

Downloads

Download Mac, Windows, and Linux builds at the releases page

Features

• Space visualizations using sunburst, treemap, and flamegraph charts
• Previews visualization as disk is being scanned
• Fast scanning (completes faster than du)
• Cross platform (macOS, Windows, Linux)
• Apple Silicon native support (arm64)
• Cancel and pause/resume scanning
• Free space visualization
• Directory drilldown with breadcrumbs and navigation
• Opens files and directories in system file manager
• Analyze disk contents from a remote server (see Reading from a file)
• Memory usage breakdown (cross-platform)
• Auto-updates

Screenshots

Reading from a file

To create a file to be read from use du -ak, for example:

• du -ak /var/log /usr | gzip -c > /tmp/sizes.txt.gz
• du -ak /opt /home /tmp > /tmp/sizes.txt

Compressed files can be read directly. To detect them, the file name has to end with .gz.

What's New

V6

• Electron 40 - Major upgrade from Electron 28
• Apple Silicon - Native arm64 builds for M1/M2/M3 Macs
• Canvas Sunburst - Rewritten visualization using Canvas 2D for much better performance
• Cancel/Pause Scanning - Stop or pause ongoing scans, view partial results
• Free Space Visualization - See available disk space in the sunburst chart
• Accurate Scanning - Skip symlinks, dedupe hardlinks, exclude problematic paths (OneDrive caches, system files)
• Real-time Stats - See file/directory counts, scan speed, and errors during scanning
• Memory Visualization - Cross-platform support (macOS, Windows, Linux)
• Color Schemes - New Seaborn palettes, colorblind-friendly options
• 3D Mode - Experimental 3D sunburst visualization
• Auto-updates - Automatic update notifications via electron-updater
• GitHub Actions CI/CD - Automated builds for all platforms

V5

• Import from DU file
• Upgrade electron
• Flamegraphs (BETA)
• Directory Listview
• Update libs - Electron, D3

V4

• Treemap view
• Memory monitoring
• Mac App look using Photon
• Context Menus for locating + opening + deleting files / directories
• Navigation controls (back/fwd/up)
• Switched disk scanning jobs to invisible renderer process

V3

• App icon finally! Thanks Jill for the help with this :)
• Many Bug fixes
• Disk scanning is moved to a webview process
• Investigated various RPC methods. Now uses LocalStorage + FileSystem IPC message passing
• Reduce memory usage (and Electron crashes) by not caching key paths
• Tested on > 100GB & 2M files
• Improvements to user interactivity esp on hover states
• To prevent renderer process from hitting heap mem limit (1.5GB), all previous data is null, with dom elements removed to reduce memory pressure
• Allow target selection for disk usage scanning
• Locate path in Finder
• Env Debug Flags

V2

• Major speed up scanning directories. About 10x from version 1, and almost as fast or faster than du.
• Runs disk scanning as a separate headless renderer process
• Json is passed back via IPC
• Remove Async npm dependency

Development

Install dependencies:

npm install

Run in development mode:

npm run debug

Or simply:

npm start

Build for distribution:

npm run build        # Current platform
npm run build:mac    # macOS
npm run build:win    # Windows
npm run build:linux  # Linux

History

This project started as quick prototype for me to test drive Electron (& some ES6 syntax), D3.js and to explore the question of "what's taking up my disk space". Turns out writing a disk visualization app isn't that simple as I dwell into figuring out how to make disk scanning not block the UI thread, IPC calls go faster, smoother rendering, lesser memory usage, more sensible interactions...

Issues

Please raise on GitHub issue tracker or contact @blurspline on Twitter

Thanks

• Jill for designing the app logo
• Jianwei for his comments on the app
• Chee Aun for helping alpha test the app
• WM for his talk on Electron that got me started
• Contributors

License

MIT