Re: Git is not scalable with too many refs/*

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Heya,

[+shawn, who runs into something similar with Gerrit]

On Thu, Jun 9, 2011 at 05:44, NAKAMURA Takumi <geek4civic@xxxxxxxxx> wrote:
> Hello, Git. It is my 1st post here.
>
> I have tried tagging each commit as "refs/tags/rXXXXXX" on git-svn
> repo locally. (over 100k refs/tags.)
> Indeed, it made something extremely slower, even with packed-refs and
> pack objects.
> I gave up, then, to push tags to upstream. (it must be terror) :p
>
> I know it might be crazy in the git way, but it would bring me conveniences.
> (eg. git log --oneline --decorate shows me each svn revision)
> I would like to work for Git to live with many tags.
>
> * Issues as far as I have investigated;
>
> Â- git show --decorate is always slow.
> Â Âin decorate.c, every commits are inspected.
> Â- git rev-tree --quiet --objects $upstream --not --all spends so much time,
> Â Âeven if it is expected to return with 0.
> Â ÂAs you know, it is used in builtin/fetch.c.
> Â- git-upload-pack shows "all" refs to me if upstream has too many refs.
>
> I would like to work as below if they were valuable.
>
> Â- Get rid of inspecting commits in packed-refs on decorate stuff.
> Â- Implement sort-by-hash packed-refs, (not sort-by-name)
> Â- Implement more effective pruning --not --all on revision.c.
> Â- Think about enhancement of protocol to transfer many refs more effectively.
>
> I am happy to consider the issue, thank you.

-- 
Cheers,

Sverre Rabbelier
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