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Re: getting list of objects for packing

From
Junio C Hamano <gitster@pobox.com>
Date
Oct 31, 2008, 21:30 UTC
Message-ID
<7v7i7o8nc5.fsf@gitster.siamese.dyndns.org>
In-Reply-To
<JhY9the71dfsAJuojZF2S4BG-SEkshM7XxIWGPBeY9M@cipher.nrlssc.navy.mil>
Brandon Casey <casey@nrlssc.navy.mil> writes:
Show 13 quoted lines
> Nicolas Pitre wrote:
>> On Fri, 31 Oct 2008, Brandon Casey wrote:
>
>>>   -The sed statement is stripping off anything after the sha1. Any way to
>>>    get rev-list to print out just the sha1 so that sed is not necessary?
>> 
>> If you strip the data after the SHA1 when pipping into pack-objects then 
>> you'll have horrible delta compression results.  The path names after 
>> each SHA1 is used to sort objects when trying to find best matches for 
>> delta compression. So you should preserve those and feed it back 
>> especially with those packs that you still want delta compression for.
>
> Ah, I'll have to rethink my script then. Thanks!

Yeah, but wasn't the purpose of your whole exercise to list objects that do not delta nor compress well with each other, in which case the delta compression order (aka name hash) would not matter, no?

Previous: Brandon CaseyNext: Brandon Casey
Message 4 of 61 in “getting list of objects for packing”
  1. Brandon CaseyOct 31, 2008
  2. Nicolas PitreOct 31, 2008
  3. Brandon CaseyOct 31, 2008
  4. Junio C HamanoOct 31, 2008
  5. Brandon CaseyOct 31, 2008
  6. Jakub NarebskiOct 31, 2008
  7. Brandon CaseyNov 1, 2008
  8. t7700: demonstrate mishandling of objects in packs with a .keep filedrafnel@gmail.com, Nov 2, 2008
  9. 1/3 packed_git: convert pack_local flag into generic bit maskdrafnel@gmail.com, Nov 2, 2008
  10. Shawn O. PearceNov 3, 2008
  11. Brandon CaseyNov 3, 2008
  12. 1/3 t7700: demonstrate mishandling of objects in packs with a .keep fileBrandon Casey, Nov 3, 2008
  13. 2/3 packed_git: convert pack_local flag into a bitfield and add pack_keepBrandon Casey, Nov 3, 2008
  14. 3/3 pack-objects: honor '.keep' filesBrandon Casey, Nov 3, 2008
  15. Shawn O. PearceNov 3, 2008
  16. Brandon CaseyNov 5, 2008
  17. Brandon CaseyNov 6, 2008
  18. Junio C HamanoNov 7, 2008
  19. Brandon CaseyNov 7, 2008
  20. Andreas EricssonNov 7, 2008
  21. Shawn O. PearceNov 7, 2008
  22. recognize loose local objects during repackdrafnel@gmail.com, Nov 10, 2008
  23. Junio C HamanoNov 10, 2008
  24. 1/4 pack-objects: new option --honor-pack-keepBrandon Casey, Nov 7, 2008
  25. 2/4 repack: don't repack local objects in packs with .keep fileBrandon Casey, Nov 7, 2008
  26. 3/4 repack: do not fall back to incremental repacking with [-a|-A]Brandon Casey, Nov 7, 2008
  27. 4/4 builtin-gc.c: use new pack_keep bitfield to detect .keep file existenceBrandon Casey, Nov 7, 2008
  28. Andreas EricssonNov 7, 2008
  29. Andreas EricssonNov 7, 2008
  30. t7700: demonstrate mishandling of objects in packs with a .keep fileBrandon Casey, Nov 3, 2008
  31. Andreas EricssonNov 4, 2008
  32. Brandon CaseyNov 4, 2008
  33. Junio C HamanoNov 4, 2008
  34. Brandon CaseyNov 4, 2008
  35. Andreas EricssonNov 4, 2008
  36. Junio C HamanoNov 4, 2008
  37. Jeff KingNov 12, 2008
  38. Junio C HamanoNov 12, 2008
  39. Jeff KingNov 12, 2008
  40. Brandon CaseyNov 12, 2008
  41. repack and .keep seriesBrandon Casey, Nov 12, 2008
  42. 1/6 t7700: demonstrate mishandling of objects in packs with a .keep fileBrandon Casey, Nov 12, 2008
  43. 2/6 packed_git: convert pack_local flag into a bitfield and add pack_keepBrandon Casey, Nov 12, 2008
  44. 3/6 pack-objects: new option --honor-pack-keepBrandon Casey, Nov 12, 2008
  45. 4/6 repack: don't repack local objects in packs with .keep fileBrandon Casey, Nov 12, 2008
  46. 5/6 repack: do not fall back to incremental repacking with [-a|-A]Brandon Casey, Nov 12, 2008
  47. 6/6 builtin-gc.c: use new pack_keep bitfield to detect .keep file existenceBrandon Casey, Nov 12, 2008
  48. t7700: test that 'repack -a' packs alternate packed objectsBrandon Casey, Nov 13, 2008
  49. Junio C HamanoNov 12, 2008
  50. Junio C HamanoNov 12, 2008
  51. Andreas EricssonNov 3, 2008
  52. Brandon CaseyNov 3, 2008
  53. Andreas EricssonNov 3, 2008
  54. Brandon CaseyNov 3, 2008
  55. Andreas EricssonNov 4, 2008
  56. 2/3 packed_git: add new PACK_KEEP flag and haspackkeep() access macrodrafnel@gmail.com, Nov 2, 2008
  57. 3/3 pack-objects: honor '.keep' filesdrafnel@gmail.com, Nov 2, 2008
  58. Shawn O. PearceNov 3, 2008
  59. 1/3 t7700: demonstrate mishandling of loose objects in an alternate ODBdrafnel@gmail.com, Nov 10, 2008
  60. 2/3 sha1_file.c: split has_loose_object() into local and non-local counterpartsdrafnel@gmail.com, Nov 10, 2008
  61. 3/3 pack-objects: extend --local to mean ignore non-local loose objects toodrafnel@gmail.com, Nov 10, 2008

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