Xtool -dd Deduplication 〈1080p 2024〉

| Aspect | Detail | |--------|--------| | | Excellent for versioned files (logs, VMDK, backups). Poor for already compressed data (ZIP, MP4, JPG). | | Memory usage | High with --dedup (hash table grows with unique chunks). Use --max-mem=256M to limit. | | Speed | Slower than rsync, but better compression. ~50-200 MB/s on modern CPU. | | Limitation | Not block-level; variable chunking means no easy "file-backed dedup" like ZFS. | | Concurrency | Single-threaded by default. Use -P for parallel (experimental). |

# Find repeated chunks inside a single large file (e.g., database dump) xdelta3 -e --dedup -s /dev/null largefile largefile.dedup xtool -dd deduplication

However, for , it is a superior alternative, offering storage economics that standard dd cannot match. | Aspect | Detail | |--------|--------| | |

: Enables the deduplication engine and specifies where to store the stream database . Use --max-mem=256M to limit