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Re: git-svn should default to --repack

From
Karl Hasselström <kha@treskal.com>
Date
Jan 19, 2008, 12:35 UTC
Message-ID
<20080119123557.GA30778@diana.vm.bytemark.co.uk>
In-Reply-To
<7vfxwudftz.fsf@gitster.siamese.dyndns.org>
On 2008-01-18 12:44:08 -0800, Junio C Hamano wrote:
Show 12 quoted lines
> Karl Hasselström <kha@treskal.com> writes:
>
> > I believe so too. And nowadays there's "git gc --auto", which was
> > made for occasions such as this, so it should be a breeze to
> > implement. The overhead might be low enough that it can be called
> > after _every_ imported revision.
>
> Careful. I made the same mistake and it had to be corrected with
> e0cd252eb0ba6453acd64762625b004aa4cc162b.
>
> "gc --auto" after every 1000 or so feels like a good default and I
> would agree that would be a real fix to a real usability bug.

I think 1000 might be too high; considering that (at least in my experience) it takes on the order of 250-500 ms to import a commit, the gc --auto overhead of maybe 10 ms isn't so bad.

A good compromise might be to run gc --auto after every 10-100 commits, _and_ when the import is done.

However, if gc --auto always takes a lot of time without accomplishing anything in the presence of too many unreachable loose objects it might not be a good idea to run it at all, since the use of git-svn involves frequent rebasing.

> Patches?
Just hot air and noise for now from my end. Sorry.
-- 
Karl Hasselström, kha@treskal.com
      www.treskal.com/kalle
Previous: Junio C HamanoNext: Kevin Ballard
Message 4 of 27 in “git-svn should default to --repack”
  1. Kevin BallardJan 18, 2008
  2. Karl HasselströmJan 18, 2008
  3. Junio C HamanoJan 18, 2008
  4. Karl HasselströmJan 19, 2008
  5. Kevin BallardJan 19, 2008
  6. Let "git svn" run "git gc --auto" occasionallyKarl Hasselström, Jan 19, 2008
  7. Harvey HarrisonJan 19, 2008
  8. Eric WongJan 20, 2008
  9. Karl HasselströmJan 20, 2008
  10. Junio C HamanoJan 20, 2008
  11. Eric WongJan 21, 2008
  12. Junio C HamanoJan 22, 2008
  13. Eric WongJan 22, 2008
  14. Junio C HamanoJan 22, 2008
  15. git filter-branch should run git gc --autoKevin Ballard, Jan 23, 2008
  16. Junio C HamanoJan 23, 2008
  17. Junio C HamanoJan 23, 2008
  18. Kevin BallardJan 23, 2008
  19. Harvey HarrisonJan 23, 2008
  20. Kevin BallardJan 23, 2008
  21. Sam VilainJan 23, 2008
  22. Kevin BallardJan 23, 2008
  23. Mike HommeyJan 23, 2008
  24. Johannes SchindelinJan 23, 2008
  25. Junio C HamanoJan 23, 2008
  26. 1/2 git-svn: Don't call git-repack anymoreKarl Hasselström, Jan 20, 2008
  27. 2/2 Let "git svn" run "git gc --auto" occasionallyKarl Hasselström, Jan 20, 2008

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