Background:
Windows, git version 1.8.3.msysgit.0
bare repo, 54k commits after migration from HG
git filter-branch --prune-empty -- --all
I'm trying to clean up our repository after migrating it from HG. I'm running
the filter-branch command listed above in an effort to clean up all of garbage
commits that HG required ("closing branch" commits and their ilk).
>From my past experience, "git filter-branch" is extremely quick when using
>simple filters, like env-filter, since it doesn't have to touch the working
>dir. However, in our case each revision is taking 1-3 seconds; our entire
>repo will take 30 hours to clean up at this rate. Normally, this wouldn't be
>a problem, except that we are getting "sh.exe couldn't start" errors after
>anywhere between the 5000th and 6000th rewritten commit. Filter-branch
>doesn't have support for picking up where it left off, so we are entirely
>unable to clean up our repo.
All that being said, I have 3 questions:
1. Is there anything I can do to speed up the filter-branch command?
(Alternatively, is there a way I can profile git-filter-branch.sh on msysgit?)
2. Any idea why sh.exe would fail?
3. Is there a way I can resume the filter-branch command when/if it fails?
(Alternatively, is there a way I can do the filter-branch in pieces and
efficiently rebase... or something?)
I have already had to modify git-filter-branch.sh myself (to support the
immense number of refs we are rewriting), so I'm comfortable with that.
Any help you can offer would be appreciated.
Thanks in advance,
John Gietzen
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