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Re: git status: small difference between stating whole repository and small subdirectory

From
Piotr Krukowiecki <piotr.krukowiecki@gmail.com>
Date
Feb 13, 2012, 16:54 UTC
Message-ID
<CAA01CsqjeDR56n=gdLWtDshp8-=8_cSih9vHV3vnUx0wTockYg@mail.gmail.com>
In-Reply-To
<CACsJy8C05wvQRRQJLxrxYKHjXsgh6RugFexkPUKYGxbQkqiXJA@mail.gmail.com>
On Fri, Feb 10, 2012 at 3:37 PM, Nguyen Thai Ngoc Duy <pclouds@gmail.com> wrote:
> I think the cost is in $GIT_DIR, not the working directory.
Could you explain?

I got the problem again today. This time I've made a copy of the repository so hopefully I'll able to reproduce the problems.

This time it's a different repository but the 'status' on a small subdirectory is even more than 2x slower than on the whole repository.

Whole repo: $ find * -type f | wc -l 33021 $ du -shc * | grep total 2.1G total

The subdir: $ find * -type f | wc -l 17 $ du -shc * | grep total 84K total

As previously, timing was done with cold cache (echo 3 | sudo tee /proc/sys/vm/drop_caches) and executed several times.

This time I have used recent git (1.7.9.188.g12766) compiled with -pg. git was executed in the subdirectory. Tracked files were not changed/deleted, there was just a couple of small untracked files.

Timings:

$ time git status real 0m16.595s user 0m0.680s sys 0m0.616s

$ time git status -- . real 0m10.030s user 0m0.464s sys 0m0.184s

You can find gprof output here: http://pastebin.com/mhddDUmv - from whole repo status http://pastebin.com/1LdVn77A - from subdir status

-- 
Piotr Krukowiecki
Previous: Nguyen Thai Ngoc DuyNext: Piotr Krukowiecki
Message 5 of 52 in “git status: small difference between stating whole repository and small subdirectory”
  1. Piotr KrukowieckiFeb 10, 2012
  2. Nguyen Thai Ngoc DuyFeb 10, 2012
  3. Piotr KrukowieckiFeb 10, 2012
  4. Nguyen Thai Ngoc DuyFeb 10, 2012
  5. Piotr KrukowieckiFeb 13, 2012
  6. Piotr KrukowieckiFeb 10, 2012
  7. Thomas RastFeb 14, 2012
  8. Piotr KrukowieckiFeb 15, 2012
  9. Nguyen Thai Ngoc DuyFeb 15, 2012
  10. Piotr KrukowieckiFeb 15, 2012
  11. Piotr KrukowieckiFeb 16, 2012
  12. Jeff KingFeb 15, 2012
  13. Piotr KrukowieckiFeb 16, 2012
  14. Thomas RastFeb 16, 2012
  15. Junio C HamanoFeb 16, 2012
  16. Piotr KrukowieckiFeb 17, 2012
  17. Jeff KingFeb 16, 2012
  18. Piotr KrukowieckiFeb 17, 2012
  19. Jeff KingFeb 17, 2012
  20. Junio C HamanoFeb 17, 2012
  21. Jeff KingFeb 17, 2012
  22. Piotr KrukowieckiFeb 20, 2012
  23. Jeff KingFeb 20, 2012
  24. Thomas RastFeb 20, 2012
  25. Nguyen Thai Ngoc DuyFeb 20, 2012
  26. Jeff KingFeb 20, 2012
  27. Jeff KingFeb 20, 2012
  28. Thomas RastFeb 20, 2012
  29. Jeff KingFeb 20, 2012
  30. Junio C HamanoFeb 20, 2012
  31. Jeff KingFeb 20, 2012
  32. Junio C HamanoFeb 20, 2012
  33. Piotr KrukowieckiFeb 21, 2012
  34. Junio C HamanoFeb 20, 2012
  35. Jeff KingFeb 20, 2012
  36. Nguyen Thai Ngoc DuyFeb 21, 2012
  37. Junio C HamanoFeb 21, 2012
  38. Nguyen Thai Ngoc DuyFeb 22, 2012
  39. Junio C HamanoFeb 22, 2012
  40. Nguyen Thai Ngoc DuyFeb 22, 2012
  41. Thomas RastFeb 22, 2012
  42. Nguyen Thai Ngoc DuyFeb 22, 2012
  43. Junio C HamanoFeb 22, 2012
  44. Piotr KrukowieckiApr 10, 2012
  45. Junio C HamanoApr 10, 2012
  46. Jeff KingApr 10, 2012
  47. Junio C HamanoFeb 20, 2012
  48. Thomas RastFeb 20, 2012
  49. Nguyen Thai Ngoc DuyFeb 20, 2012
  50. Jeff KingFeb 20, 2012
  51. Junio C HamanoFeb 20, 2012
  52. Jeff KingFeb 20, 2012

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