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Re: Decompression speed: zip vs lzo

From
Sam Vilain <sam@vilain.net>
Date
Jan 10, 2008, 21:45 UTC
Message-ID
<478691EB.1080704@vilain.net>
In-Reply-To
<alpine.LFD.1.00.0801101252030.3148@woody.linux-foundation.org>
Linus Torvalds wrote:
Show 5 quoted lines
> Maybe the difference to other repositories isn't huge, and maybe the 
> kernel *is* a good test-case, but I just wouldn't take that for granted. 
>
> Try with the gcc repo, especially the one that has deep delta chains (so 
> it has even *more* deltas in relation to full objects than the kernel has)
For reference, 20 years of Perl with very deep deltas:

wilber:~/src/perl-preview$ du -sk .git 73274 .git wilber:~/src/perl-preview$ git-repack -a Counting objects: 244360, done. Compressing objects: 100% (55493/55493), done. Writing objects: 100% (244360/244360), done. Total 244360 (delta 181061), reused 244360 (delta 181061) wilber:~/src/perl-preview$ du -sk .git/objects/pack/ 75389 .git/objects/pack/ wilber:~/src/perl-preview$

There are a few generated files in this history, but really only yacc files etc. It is in general also a lot of small changes.

Sam.
Previous: Pierre HabouzitNext: Linus Torvalds
Message 12 of 39 in “Decompression speed: zip vs lzo”
  1. Marco CostalbaJan 9, 2008
  2. Junio C HamanoJan 9, 2008
  3. Sam VilainJan 9, 2008
  4. Johannes SchindelinJan 9, 2008
  5. Sam VilainJan 10, 2008
  6. Sam VilainJan 10, 2008
  7. Pierre HabouzitJan 10, 2008
  8. Nicolas PitreJan 10, 2008
  9. Linus TorvaldsJan 10, 2008
  10. Nicolas PitreJan 10, 2008
  11. Pierre HabouzitJan 11, 2008
  12. Sam VilainJan 10, 2008
  13. Linus TorvaldsJan 10, 2008
  14. Sam VilainJan 10, 2008
  15. Linus TorvaldsJan 10, 2008
  16. Sam VilainJan 11, 2008
  17. Linus TorvaldsJan 11, 2008
  18. Sam VilainJan 11, 2008
  19. Sam VilainJan 11, 2008
  20. Linus TorvaldsJan 11, 2008
  21. Sam VilainJan 12, 2008
  22. Nicolas PitreJan 12, 2008
  23. Sam VilainJan 12, 2008
  24. Nicolas PitreJan 12, 2008
  25. Johannes SchindelinJan 12, 2008
  26. Junio C HamanoJan 12, 2008
  27. Marco CostalbaJan 10, 2008
  28. Sam VilainJan 10, 2008
  29. Nicolas PitreJan 10, 2008
  30. Pierre HabouzitJan 11, 2008
  31. Nicolas PitreJan 11, 2008
  32. Morten WelinderJan 11, 2008
  33. Nicolas PitreJan 10, 2008
  34. Marco CostalbaJan 10, 2008
  35. Marco CostalbaJan 10, 2008
  36. Johannes SchindelinJan 10, 2008
  37. Marco CostalbaJan 10, 2008
  38. Dana HowJan 10, 2008
  39. Junio C HamanoJan 9, 2008

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