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Re: RFC: Flat directory for notes, or fan-out? Both!

From
Sam Vilain <sam@vilain.net>
Date
Feb 11, 2009, 03:30 UTC
Message-ID
<49924642.6000609@vilain.net>
In-Reply-To
<alpine.LFD.2.00.0902101825360.3590@localhost.localdomain>
Linus Torvalds wrote:
Show 6 quoted lines
> That sounds unnecessarily complicated. It also really sucks for the case 
> you want to optimize: small differences between trees, where you don't 
> need to even linearize the common parts.
>
> Why not make it just a straight fixed 12-bit prefix, single-level trie.
>

My solution suffers from that problem too, but I personally still don't think that the answer is to fix the trie boundary.

The only case where it hurts is when you want to merge. Nothing else should care. So, if a merge of these note trees sees two different trie sizes then it can convert the shorter one to the longer length first, and then try the merge again. So you get the pain, but only once. And when a project decides that its split is too small, it can split then and it should "silently" spread out to others.

Sam.
Previous: Linus TorvaldsNext: Linus Torvalds
Message 6 of 33 in “RFC: Flat directory for notes, or fan-out? Both!”
  1. Johannes SchindelinFeb 9, 2009
  2. Boyd Stephen Smith Jr.Feb 10, 2009
  3. Jeff KingFeb 10, 2009
  4. Boyd Stephen Smith Jr.Feb 11, 2009
  5. Linus TorvaldsFeb 11, 2009
  6. Sam VilainFeb 11, 2009
  7. Linus TorvaldsFeb 11, 2009
  8. Sam VilainFeb 11, 2009
  9. Johannes SchindelinFeb 11, 2009
  10. Jeff KingFeb 10, 2009
  11. Johannes SchindelinFeb 10, 2009
  12. Jeff KingFeb 10, 2009
  13. Johannes SchindelinFeb 10, 2009
  14. Junio C HamanoFeb 10, 2009
  15. Shawn O. PearceFeb 10, 2009
  16. Johannes SchindelinFeb 10, 2009
  17. Shawn O. PearceFeb 10, 2009
  18. Johannes SchindelinFeb 10, 2009
  19. Junio C HamanoFeb 10, 2009
  20. Shawn O. PearceFeb 10, 2009
  21. Johannes SchindelinFeb 10, 2009
  22. Thomas RastFeb 10, 2009
  23. Thomas RastFeb 10, 2009
  24. Junio C HamanoFeb 10, 2009
  25. Jeff KingFeb 11, 2009
  26. Johannes SchindelinFeb 11, 2009
  27. Junio C HamanoFeb 11, 2009
  28. Johannes SchindelinFeb 11, 2009
  29. Shawn O. PearceFeb 10, 2009
  30. Johannes SchindelinFeb 10, 2009
  31. Shawn O. PearceFeb 10, 2009
  32. Sam VilainFeb 11, 2009
  33. Sam VilainFeb 11, 2009

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