Mercurial > hg
view tests/test-revlog-ancestry.py @ 27784:432242f41d9f
obsolete: make _computeobsoleteset much faster
This patch makes _computeobsoleteset much faster by looping
over the draft and secrets as opposed to looping over the
successors.
This works because "number of draft and secret" is typically
way smaller(<100) than the number of successor in the repo (~90k in
my checkout of core mercurial as of today). And also because
it is very fast to compute "not public()".
I timed the code with the following setup:
"""
from mercurial import hg, ui, obsolete
ui = ui.ui()
repo = hg.repository(ui, "~/hg")
l = repo.obsstore.successors # This caches the result
"""
With about 90k successors.
k=obsolete._computeobsoleteset(repo) before this patch:
10 loops, best of 3: 33.9 ms per loop
k=obsolete._computeobsoleteset(repo) after this patch:
10000 loops, best of 3: 83.3 µs per loop
author | Laurent Charignon <lc2817@columbia.edu> |
---|---|
date | Wed, 13 Jan 2016 21:52:26 -0800 |
parents | 43c00ca887d1 |
children | abe605bbf0de |
line wrap: on
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import os from mercurial import hg, ui, merge u = ui.ui() repo = hg.repository(u, 'test1', create=1) os.chdir('test1') def commit(text, time): repo.commit(text=text, date="%d 0" % time) def addcommit(name, time): f = open(name, 'w') f.write('%s\n' % name) f.close() repo[None].add([name]) commit(name, time) def update(rev): merge.update(repo, rev, False, True) def merge_(rev): merge.update(repo, rev, True, False) if __name__ == '__main__': addcommit("A", 0) addcommit("B", 1) update(0) addcommit("C", 2) merge_(1) commit("D", 3) update(2) addcommit("E", 4) addcommit("F", 5) update(3) addcommit("G", 6) merge_(5) commit("H", 7) update(5) addcommit("I", 8) # Ancestors print 'Ancestors of 5' for r in repo.changelog.ancestors([5]): print r, print '\nAncestors of 6 and 5' for r in repo.changelog.ancestors([6, 5]): print r, print '\nAncestors of 5 and 4' for r in repo.changelog.ancestors([5, 4]): print r, print '\nAncestors of 7, stop at 6' for r in repo.changelog.ancestors([7], 6): print r, print '\nAncestors of 7, including revs' for r in repo.changelog.ancestors([7], inclusive=True): print r, print '\nAncestors of 7, 5 and 3, including revs' for r in repo.changelog.ancestors([7, 5, 3], inclusive=True): print r, # Descendants print '\n\nDescendants of 5' for r in repo.changelog.descendants([5]): print r, print '\nDescendants of 5 and 3' for r in repo.changelog.descendants([5, 3]): print r, print '\nDescendants of 5 and 4' for r in repo.changelog.descendants([5, 4]): print r,