Re: [PATCH 4/4] t5326: test propagating hashcache values

Taylor Blau [off-list ref] writes:

Alas, there they are. They are basically no different than having the
name-hash for single pack bitmaps, it's just now we don't throw them
away when generating a MIDX bitmap from a state where the repository
already has a single-pack bitmap.

I actually wasn't expecting any CPU/time difference.

I hope that we are talking about the same name-hash, which is used
to sort the blobs so that when pack-objects try to find a good delta
base, the blobs from the same path will sit close to each other and
hopefully fit in the pack window.

The effect I was hoping to see by not discarding the information was
that we find better delta base hence smaller deltas in the resulting
packfiles.

Thanks.