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It is important to clarify upfront that does not correspond to any known, publicly documented software, file format, verified tool, or standard computing term (as of my latest knowledge update).
// Write chunks in parallel (chunks independent) let chunk_offsets = write_chunks_parallel(&mut new_writer, &chunks)?;
| Method | Time | Final size | Alignment | |----------------------------|---------|------------|-----------| | Naive Python script | 38 min | 10.0 GB | No | | Single-thread C++ (zlib) | 11 min | 8.4 GB | No | | | 2 min 10 sec | 7.1 GB | Yes | | Zero-copy (same chunk size)| 0.18 sec| 10.0 GB | No change |
if (file_ext in ["wav", "mp4", "bk2"]) chunk = 1MB else chunk = 64KB | Compressor | Speed | Ratio | Best for | |------------|-----------|-------|------------------------------| | LZ4 | Very fast | Low | Real-time streaming | | Zstd -3 | Fast | Good | Balanced rechunk | | Zstd -19 | Slow | Great | Distribution PAK (one-time) | | Brotli | Slowest | Best | Downloads (not runtime) |