[PATCH 0/2] remote: optimize rm/prune ref deletion

At work, we have some shared repositories with far too many refs in them, which causes various issues, performance and otherwise. We plan to move most of the refs out of them, but for that to help users that have already fetched all the refs into their local repositories, those users should want to run 'git remote prune'.

It turns out that 'git remote prune' (and also 'git remote rm') has its own rather severe performance issues relating to removing the obsolete refs from the local repository, which I've addressed in the following patches. The performance improves from many CPU minutes (long enough that I could never be bothered to let it run to completion) to around a few seconds, when removing ~15000 refs.

Jens Lindström (2):
  remote: defer repacking packed-refs when deleting refs
  remote prune: optimize "dangling symref" check/warning

 builtin/remote.c | 25 +++++++++++++++++++++----
 refs.c           | 34 +++++++++++++++++++++++++++-------
 refs.h           |  4 ++++
 3 files changed, 52 insertions(+), 11 deletions(-)

-- 1.9.1