> What is
> ls -1 /gnu/store/.links/|wc -l
> Never saw it before. Does this scale?
It’s used for optional file deduplication. It is enabled by default,
but you can disable it with a daemon option on file systems that
deduplicate data at the block level.
I don’t know about scalability. This number is still well below the
limits of ext4 file systems, but accessing a big directory listing like
that can be slow. I would feel a little better about this if we split
it up into different prefix directories (like it’s done for browser
caches). I don’t think it’s necessary, though.
GPG: BCA6 89B6 3655 3801 C3C6 2150 197A 5888 235F ACAC