Back to Projects
Utilities · Benchmark
dd Block-Size Benchmark
Sweeps dd block sizes from 512B to 64MB to find the fastest one for this disk.
Status: Archived·4 technologies in stack
- 01Sweep
- 02Cache handling
- 03Report
Overview
Architecture Overview
Works out the best dd block size for a given machine by sweeping from 512 B up to 64 MB and reporting throughput at each step. Worth running before you image or clone a drive: the right block size can save you hours.
Architecture Breakdown
How it works
Core mechanics, failure recovery paths, and system design decisions.
Step 01
Sweep
Runs dd across the whole block-size range and records throughput at each step.
Step 02
Cache handling
Clears the kernel page cache between runs, so every number reflects real disk I/O and you can trust the winner.
Step 03
Report
Prints throughput per block size, so the right value for that particular machine and disk is obvious.
Key Takeaways
Engineering Highlights
- •Cache-aware, so you can trust every number
- •Answers one narrow question properly
- •Run it once before a long imaging job
- •Integrated as the bench/ throughput benchmark module in the unified pi-image-tools suite
Stack & Tools
Technologies Used
BashddI/O benchmarkingCache-aware
Ask me about this projectInternal enterprise or private repository