If I manually deduplicate/copy a 1GB file, how many such offset/refcount tuples would be created in RAM? Just one for the whole file, or one per underlying 128kB block?
This is so much better than automatically doing dedup and the RAM overhead that entails.
Doing offline/RAM+in memory dedup size optimizations seem like a really good optimization path. In the spirit of also paying only what you use and not the rest.
Edit: What's the RAM overhead of this? Is it ~64B per 128kB deduped block or what's the magnitude of things?