Mercurial > hg-stable
changeset 24610:4a4018831d2e
dirstate: use parsers.make_file_foldmap when available
This is a significant performance win on large repositories. perffilefoldmap:
On Linux/gcc, on a test repo with over 500,000 files:
before: wall 0.605021 comb 0.600000 user 0.560000 sys 0.040000 (best of 17)
after: wall 0.280530 comb 0.280000 user 0.250000 sys 0.030000 (best of 35)
On Mac OS X/clang, on a real-world repo with over 200,000 files:
before: wall 0.281103 comb 0.280000 user 0.260000 sys 0.020000 (best of 34)
after: wall 0.133622 comb 0.140000 user 0.120000 sys 0.020000 (best of 65)
This visibly impacts status times on case-insensitive file systems. On the Mac
OS X repo, status goes from 3.64 seconds to 3.50.
With the third-party hgwatchman extension [1], 'hg status' on the same repo
goes from 0.80 seconds to 0.65.
[1] https://bitbucket.org/facebook/hgwatchman
| author | Siddharth Agarwal <sid0@fb.com> |
|---|---|
| date | Wed, 01 Apr 2015 00:44:33 -0700 |
| parents | 670aaee7931c |
| children | 82fddb3d6bc0 |
| files | mercurial/dirstate.py |
| diffstat | 1 files changed, 8 insertions(+), 0 deletions(-) [+] |
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--- a/mercurial/dirstate.py Tue Mar 31 23:32:27 2015 -0700 +++ b/mercurial/dirstate.py Wed Apr 01 00:44:33 2015 -0700 @@ -88,6 +88,14 @@ @propertycache def _filefoldmap(self): + try: + makefilefoldmap = parsers.make_file_foldmap + except AttributeError: + pass + else: + return makefilefoldmap(self._map, util.normcasespec, + util.normcasefallback) + f = {} normcase = util.normcase for name, s in self._map.iteritems():