I'm not familiar with Git internals. Does the performance of the hashing algorithm contribute significantly to how Git deals with large files or with operations over a large number of small files?

I've run into performance problems with things like MathJaX, which includes thousands (or tens of thousands?) of files as a backup method for rendering equations. (I understand each file has a single character in some typeface.)

The hash function may not matter for overall git performance in virtually all dev machine setups, but there will be a (maybe tiny, maybe larger, depending on the repo and disk io speed) difference in cpu utilization and heat generation, right?

But like its ancestor chacha, blake2 is fast on anything that has SIMD.