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Re: how to speed up "git log"?

From
BHBruno Haible <bruno@clisp.org>
Date
Feb 17, 2007, 19:19 UTC
Message-ID
<200702172019.20536.bruno@clisp.org>
In-Reply-To
<20070211152840.GA2781@steel.home>
Alex Riesen wrote:
> MacOS X is famous for its bad perfomance when doing serious work.
> The mmap(2) of it, in particular.

You can't blame MacOS X mmap(2) for git's slow execution of "git log". Here are is execution times of "git log tr.c > output"

  - with git-1.5.0-rc4 built with -DNO_MMAP
      real    0m26.032s
      user    0m13.580s
      sys     0m11.730s
  - with git-1.5.0-rc4 built with the default settings:
      real    0m25.469s
      user    0m13.530s
      sys     0m11.490s

You can see that using mmap() provides a speedup of about 2% on MacOS X, which is similar to the 4% than Shawn measured on Linux.

Bruno
Previous: Bruno HaibleNext: Johannes Schindelin
Message 19 of 23 in “how to speed up "git log"?”
  1. Bruno HaibleFeb 11, 2007
  2. Johannes SchindelinFeb 11, 2007
  3. Shawn O. PearceFeb 11, 2007
  4. Johannes SchindelinFeb 11, 2007
  5. Bruno HaibleFeb 11, 2007
  6. Shawn O. PearceFeb 11, 2007
  7. Johannes SchindelinFeb 11, 2007
  8. Robin RosenbergFeb 11, 2007
  9. Bruno HaibleFeb 12, 2007
  10. Johannes SchindelinFeb 12, 2007
  11. Junio C HamanoFeb 12, 2007
  12. Shawn O. PearceFeb 12, 2007
  13. Junio C HamanoFeb 12, 2007
  14. Shawn O. PearceFeb 12, 2007
  15. Shawn O. PearceFeb 12, 2007
  16. Linus TorvaldsFeb 12, 2007
  17. Bruno HaibleFeb 12, 2007
  18. Bruno HaibleFeb 11, 2007
  19. Bruno HaibleFeb 17, 2007
  20. Johannes SchindelinFeb 17, 2007
  21. Bruno HaibleFeb 18, 2007
  22. Johannes SchindelinFeb 18, 2007
  23. Shawn O. PearceFeb 18, 2007

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