Evaluate compression
Evaluate which compression works best for file content
Usage: qft evaluate-compression [OPTIONS] --input-file <INPUT_FILE>
Options:
Evaluate which compression works best for file content
Usage: qft evaluate-compression [OPTIONS] --input-file <INPUT_FILE>
Options:
-i, --input-file <INPUT_FILE>
--omit [<OMIT>...] List of compression formats to omit from evaluation [possible values: bzip2, gzip, lz4, xz]
--omit-levels [<OMIT_LEVELS>...] List of compression levels to omit from evaluation
-j, --threads <jobs> The number of threads to use to evaluate compression (1 = sequential), the default is calculated from the available CPUs on the host [default: 14]
-v, --verbose... Pass many times for more log output
-q, --quiet Silence all log output, this will lead to better performance [env: QFT_QUIET=]
--color=<WHEN> [default: auto] [possible values: auto, always, never]
-h, --help Print help (see more with '--help') Print help (see more with '--help')
Demo
Example with output
Evaluate compression of Cargo.lock. Omit gzip and most compression levels to make this example brief.
qft evaluate-compression --input-file Cargo.lock --omit gzip --omit-levels 0 2 3 4 5 6 7 8
╭────────────────────┬───────────────────┬───────────────────────┬─────────────────────────╮
│ ┆ Best Ratio ┆ Best Compression Time ┆ Best Decompression Time │
╞════════════════════╪═══════════════════╪═══════════════════════╪═════════════════════════╡
│ Format ┆ Bzip2 ┆ Lz4 ┆ Lz4 │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
│ Compression level ┆ 1 ┆ - ┆ - │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
│ Compression Ratio ┆ 4.56:1 ┆ 2.42:1 ┆ 2.42:1 │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
│ Encode/decode time ┆ 2.36ms/686.34µs ┆ 83.29µs/32.53µs ┆ 83.29µs/32.53µs │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
│ Compressed Size ┆ 7.36 KiB [7533 B] ┆ 13.83 KiB [14163 B] ┆ 13.83 KiB [14163 B] │
├╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┼╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌┤
│ % of Original ┆ 21.94% ┆ 41.25% ┆ 41.25% │
╰────────────────────┴───────────────────┴───────────────────────┴─────────────────────────╯
==> Short summary
Best Compression Ratio: Bzip2[1] Compression/Decompression: 2.36ms/ 686.34µs 4.56:1 (21.94% of original)
Best Compression Time: Lz4 Compression/Decompression: 83.29µs/ 32.53µs 2.42:1 (41.25% of original)
Best Decompression Time: Lz4 Compression/Decompression: 83.29µs/ 32.53µs 2.42:1 (41.25% of original)