50 Gb Test File Extra Quality -

"Benchmarking file system benchmarking: it IS rocket science"

macOS provides a dedicated utility called mkfile that is much faster than traditional methods. mkfile 50g testfile.dat 50 gb test file

Compression algorithms behave very differently depending on data entropy. A zero-filled file compresses to nothing (cheating). A 50GB /dev/urandom file compresses almost 0%. 50 gb test file