[chmod775]

Is that single-threaded libmagic vs Magika using every core on the system? What are the numbers like if you run multiple libmagic instances in parallel for multiple files, or limit both libmagic and magika to a single core?

Testing it on my own system, magika seems to use a lot more CPU-time:

    file /usr/lib/*  0,34s user 0,54s system 43% cpu 2,010 total
    ./file-parallel.sh  0,85s user 1,91s system 580% cpu 0,477 total
    bin/magika /usr/lib/*  92,73s user 1,11s system 393% cpu 23,869 total

Looks about 50x slower to me. There's 5k files in my lib folder. It's definitely still impressively fast given how the identification is done, but the difference is far from negligible.