Mercurial > hg
changeset 40745:300f8564220f
tags: cache `repo.changelog` access when checking tags nodes
The tags reading process checks if the nodes referenced in tags exist. Caching
the access to `repo.changelog` provides a large speedup for repositories with
many tags.
running `hg perftags` in a large private repository
before: ! wall 0.393464 comb 0.390000 user 0.330000 sys 0.060000 (median of 25)
after: ! wall 0.267711 comb 0.270000 user 0.210000 sys 0.060000 (median of 38)
| author | Boris Feld <boris.feld@octobus.net> |
|---|---|
| date | Tue, 20 Nov 2018 10:38:15 +0000 |
| parents | 594e84a2e574 |
| children | 82c189c511bd |
| files | mercurial/localrepo.py |
| diffstat | 1 files changed, 2 insertions(+), 1 deletions(-) [+] |
line wrap: on
line diff
--- a/mercurial/localrepo.py Tue Nov 20 10:46:20 2018 +0000 +++ b/mercurial/localrepo.py Tue Nov 20 10:38:15 2018 +0000 @@ -1417,10 +1417,11 @@ tags, tt = self._findtags() else: tags = self._tagscache.tags + rev = self.changelog.rev for k, v in tags.iteritems(): try: # ignore tags to unknown nodes - self.changelog.rev(v) + rev(v) t[k] = v except (error.LookupError, ValueError): pass