'tags' takes forever to do nothing

On Fri, 2008-07-18 at 06:46 +0000, fullermd wrote:
> Public bug reported:
>
> Using bzr.dev on bzr.dev (which has no tags):
>
> % time dbzr tags
> 8.130u 0.268s 0:08.64 97.1% 215+4658k 0+0io 0pf+0w

What is dbzr?

-Rob

--
GPG key available at: <http://www.robertcollins.net/keys.txt>.

> What is dbzr?

My shell alias to run bzr.dev instead of the system-installed bzr (1.5
ATM).

--
Matthew Fuller
<email address hidden>

can you please run with --lsprof-file tags.callgrind and attach the
callgrind file?

-Rob

Attached

Thanks. I've sent a review request in to fix this particular case, but
the general bug still exists.

The problem is that tags is generating a full revision id mapping not a
partial one for the revisions needed.

-Rob

The trivial case of no tags is worked around in bzr.dev:3606. The general case of doing too much work for existing tags is still around.