Disk Checker

Disk benchmarking and latency visualization tool for fio and badblocks output.

Features

• Parse fio JSON+ latency CSV files
• Generate histogram and CDF plots
• REST API for remote benchmarking
• Async job management for long-running benchmarks

Installation

git clone <repository>
cd disk-checker
python -m venv venv
source venv/bin/activate
pip install -e ".[dev]"

CLI Usage

# Basic usage
python -m disk_checker scan_latency.csv

# With options
python -m disk_checker scan_latency.csv --metric read_clat --unit ms --log-x

# Generate CDF
python -m disk_checker scan_latency.csv --cdf

# View all metrics
python -m disk_checker scan_latency.csv --all-metrics

API Usage

# Start the server
python -m disk_checker.scripts.serve --host 0.0.0.0 --port 8000

# Access API docs at http://localhost:8000/docs

API Endpoints

• POST /api/v1/scan - Upload CSV and get analysis
• POST /api/v1/plot - Generate and return plot image
• POST /api/v1/benchmark - Start a benchmark job
• GET /api/v1/jobs/{id} - Check job status
• GET /health - Health check

Architecture

disk-checker/
├── src/disk_checker/
│   ├── core/          # Business logic (extractor, converter, helpers, orchestrator)
│   ├── plotting/      # Visualization (matplotlib)
│   ├── web/           # FastAPI backend
│   └── scripts/       # Entry points (cli, serve)
├── tests/             # Test suite
└── data/              # Sample data

Testing

pytest
pytest --cov=disk_checker
pytest --cov=disk_checker --cov-report=html

License

MIT