[OttoCoddo]

Thank you for the new numbers. Sure, it can be different on different machines, especially full systems. For me on Linux and ext4, Pack finishes the Linux code base at just 0.96 s.

Anyway, I do not expect an order of magnitude difference between tar.zst and Pack; after all, Pack is using Zstandard. What makes Pack fundamentally different from tar.zst is Random Access and other important factors like user experience. I shared some numbers on it here: https://news.ycombinator.com/item?id=39803968 and you are encouraged to try them for yourself. Also, by adding Encryption and Locking to Pack, Random Access will be even more beneficial.