Nice results, I will keep a watch on this! Would be interesting to see benchmarks vs Oodle compression, I think the most similar one is Selkie?
misa77 and oodle are both supported in turbobench (see: https://github.com/powturbo/turbobench), so it's easy to compare them.
Results on the silesia corpus on the same Intel setup described in the README, using turbobench:
codec decode ratio encode
misa77 -0 5309 MB/s 42.64% 58.2 MB/s
misa77 -1 4332 MB/s 39.65% 54.5 MB/s
selkie -1 3095 MB/s 43.48% 197 MB/s
selkie -2 3013 MB/s 41.80% 163 MB/s
selkie -3 3081 MB/s 39.58% 95.8 MB/s
selkie -4 3498 MB/s 36.95% 43.3 MB/s
selkie -5 2607 MB/s 33.58% 2.97 MB/s
lz4 2530 MB/s 47.60% 373 MB/s
codec decode ratio encode
misa77 -0 5302 MB/s 42.64% 58.7 MB/s
selkie -3 3078 MB/s 39.58% 97.0 MB/s
lzo1x -1 421 MB/s 47.48% 314 MB/s
memcpy 12135 MB/s 100.00% 11952 MB/s