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Re: Decompression speed: zip vs lzo

From
Linus Torvalds <torvalds@linux-foundation.org>
Date
Jan 10, 2008, 22:03 UTC
Message-ID
<alpine.LFD.1.00.0801101400550.3148@woody.linux-foundation.org>
In-Reply-To
<478691EB.1080704@vilain.net>
On Fri, 11 Jan 2008, Sam Vilain wrote:
Show 12 quoted lines
> 
> 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/
Hmm. I'm not sure I understand what this was supposed to show?

You reused all the old deltas, and you did "du -sk" on two different things before/after (and didn't do a "-a -d" to repack the old pack either). So does the result actually have anything to do with any compression algorithm?

Use "-a -d -f" to repack a whole archive.
			Linus
Previous: Sam VilainNext: Sam Vilain
Message 13 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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