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Zstd codecs
=============
This library registers zstd compression codecs as `zstd_1`, ..., `zstd_22`.
Fast levels are also registered as `zstd_fast_1`, ..., `zstd_fast_7`.
Measured codec performance on every level. Values below are provided just for reference, exact numbers may vary depending on CPU model and type of data being compressed.
| Codec | Comp. Ratio | Comp. Speed (MBps) | Decomp. Speed (MBps) |
|--------------|-------------|---------------------|----------------------|
| lz4 | 0.5876 | 913 | 4100 |
| zstd_fast_7 | 0.5783 | 1066 | 2887 |
| zstd_fast_6 | 0.5733 | 1050 | 2870 |
| zstd_fast_5 | 0.5528 | 942 | 2594 |
| zstd_fast_4 | 0.5529 | 918 | 2659 |
| zstd_fast_3 | 0.5408 | 885 | 2519 |
| zstd_fast_2 | 0.5132 | 769 | 2374 |
| zstd_fast_1 | 0.5119 | 707 | 2386 |
| zstd_1 | 0.4691 | 690 | 1692 |
| zstd_2 | 0.4083 | 467 | 1496 |
| zstd_3 | 0.3505 | 358 | 1801 |
| zstd_4 | 0.3356 | 310 | 1932 |
| zstd_5 | 0.3175 | 218 | 1832 |
| zstd_6 | 0.3168 | 173 | 1920 |
| zstd_7 | 0.3081 | 149 | 1965 |
| zstd_8 | 0.3077 | 125 | 2005 |
| zstd_9 | 0.272 | 128 | 2179 |
| zstd_10 | 0.2693 | 98.5 | 2228 |
| zstd_11 | 0.2684 | 78.6 | 2185 |
| zstd_12 | 0.2682 | 71.1 | 2231 |
| zstd_13 | 0.2687 | 27.8 | 2102 |
| zstd_14 | 0.2676 | 24 | 2024 |
| zstd_15 | 0.2663 | 18.8 | 2225 |
| zstd_16 | 0.257 | 15.2 | 2093 |
| zstd_17 | 0.2521 | 12.3 | 2072 |
| zstd_18 | 0.241 | 9.68 | 1696 |
| zstd_19 | 0.2395 | 7.97 | 1709 |
| zstd_20 | 0.2337 | 6.26 | 1520 |
| zstd_21 | 0.2255 | 5.22 | 1442 |
| zstd_22 | 0.2037 | 3.88 | 1490 |
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