On Thu, Nov 08, 2012 at 03:49:32PM -0600, Uri Moszkowicz wrote:

> I'm using RHEL4. Looks like perf is only available with RHEL6.

Yeah, RHEL4 is pretty ancient; I think it predates the invention of

> heads: 308
> tags: 9614
> Looking up the tags that way took a very long time by the way. "git
> tag | wc -l" was much quicker. I've already pruned a lot of tags to
> get to this number as well. The original repository had ~37k tags
> since we used to tag every commit with CVS.

Hmm. I think for-each-ref will actually open the tag objects, but "git
tag" will not. That would imply that reading the refs is fast, but
opening objects is slow. I wonder why.

How many packs do you have in .git/objects/pack of the repository?

> All my tags are packed so cat-file doesn't work:
> fatal: git cat-file refs/tags/some-tag: bad file

The packing shouldn't matter. The point of the command is to look up the
refs/tags/some-tag ref (in packed-refs or in the filesystem), and then
open and write the pointed-to object to stdout. If that is not working,
then there is something seriously wrong going on.

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