Stefan Sperling:

> With zero pack files you do not have any deltas yet, so no deltas
> can be reused.
> 
> Try it again with 'gotadmin pack -a' and with a large pack file
> already present in the repository. Then delta-reuse should kick in.

Oookay.  I built myself this OpenBSD src.git:

$ gotadmin info
repository: /usr/obj/test1.git
pack files: 1
packed objects: 1182027
packed total size: 412M
loose objects: 895063
loose total size: 3.3G

$ time gotadmin pack -a         # old code
packing 2 references; 2077090 objects; deltify: 100%; writing pack:    2.5G 100%
Wrote 0c121f951fbfa7b4acdb1c1cd1fd00ef6c1090d0.pack
   2.5G packed; indexing 100%; resolving deltas 100%
Indexed 0c121f951fbfa7b4acdb1c1cd1fd00ef6c1090d0.pack
   69m34.22s real    56m29.16s user    14m16.41s system

$ time gotadmin pack -a         # with delta reuse
packing 2 references; 2077090 objects; deltify: 100%; writing pack:    1.5G 100%
Wrote 982d645a985bd89f3850cbd2b6f4a22055ef9aa6.pack
   1.5G packed; indexing 100%; resolving deltas 100%
Indexed 982d645a985bd89f3850cbd2b6f4a22055ef9aa6.pack
   35m46.51s real    22m27.42s user    12m43.85s system

This is both faster and produces a smaller pack file.

-- 
Christian "naddy" Weisgerber                          naddy@mips.inka.de