Mercurial > hg
view mercurial/cacheutil.py @ 45999:c4c7a6b61146
match: skip walking up the directory hierarchy if the number of pats are small
Previously, we would receive a path like abc/def/ghi and "walk up" the directory
hierarchy, checking abc/def, abc, and `b''` to see if they were in the set of
prefixes that this matcher covered. We did this indiscriminately - we generated
all of these paths even if the set of prefixes the matcher covered was
completely empty, which is the case for a lot of repos at my company (the narrow
matcher we use is usually non-recursive).
This brings the time for a rebase in one of my repos from 12.20s to 10.87s. In
this particular repo, this is entirely due to the `len(prefix_set) == 0` check,
as I do not have any recursive patterns in the narrowspec.
Differential Revision: https://phab.mercurial-scm.org/D9488
author | Kyle Lippincott <spectral@google.com> |
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date | Mon, 30 Nov 2020 12:30:58 -0800 |
parents | 687b865b95ad |
children | d4ba4d51f85f |
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# scmutil.py - Mercurial core utility functions # # Copyright Matt Mackall <mpm@selenic.com> and other # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import from . import repoview def cachetocopy(srcrepo): """return the list of cache file valuable to copy during a clone""" # In local clones we're copying all nodes, not just served # ones. Therefore copy all branch caches over. cachefiles = [b'branch2'] cachefiles += [b'branch2-%s' % f for f in repoview.filtertable] cachefiles += [b'rbc-names-v1', b'rbc-revs-v1'] cachefiles += [b'tags2'] cachefiles += [b'tags2-%s' % f for f in repoview.filtertable] cachefiles += [b'hgtagsfnodes1'] return cachefiles