Mercurial > hg
annotate tests/test-dispatch.py @ 42485:4c39c99d9492
copies: do full filtering at end of _changesetforwardcopies()
As mentioned earlier, pathcopies() is very slow when copies are stored
in the changeset. Most of the cost comes from calling _chain() for
every changeset, which is slow because it needs to read manifests. It
needs to read manifests to be able to filter out copies that are were
created in one commit and then deleted. (It also filters out copies
that were created from a file that didn't exist in the starting
revision, but that's a fixed revision across calls to _chain(), so
it's much cheaper.)
This patch changes from _chainandfilter() to just _chain() in the main
loop in _changesetforwardcopies(). It instead removes copies that have
subsequently been removed by using ctx.filesremoved(). We thus rely on
that to be fast.
It timed this command in mozilla-unified:
hg debugpathcopies FIREFOX_59_0b3_BUILD2 FIREFOX_BETA_59_END
It took 18s before and 1.1s after. It's still faster when copy
information is stored in filelogs: 0.70s. It also still gets slow when
there are merge commits involved, because we read manifests there
too. We'll deal with that later.
Differential Revision: https://phab.mercurial-scm.org/D6419
author | Martin von Zweigbergk <martinvonz@google.com> |
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date | Thu, 18 Apr 2019 00:40:53 -0700 |
parents | 32106c474086 |
children | 2372284d9457 |
rev | line source |
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1 from __future__ import absolute_import, print_function |
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2 import os |
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3 import sys |
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4 from mercurial import ( |
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5 dispatch, |
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6 ) |
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7 |
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8 def printb(data, end=b'\n'): |
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9 out = getattr(sys.stdout, 'buffer', sys.stdout) |
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10 out.write(data + end) |
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11 out.flush() |
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12 |
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13 def testdispatch(cmd): |
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14 """Simple wrapper around dispatch.dispatch() |
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15 |
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16 Prints command and result value, but does not handle quoting. |
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17 """ |
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18 printb(b"running: %s" % (cmd,)) |
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19 req = dispatch.request(cmd.split()) |
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20 result = dispatch.dispatch(req) |
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21 printb(b"result: %r" % (result,)) |
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22 |
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23 testdispatch(b"init test1") |
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24 os.chdir('test1') |
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25 |
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26 # create file 'foo', add and commit |
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27 f = open('foo', 'wb') |
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28 f.write(b'foo\n') |
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29 f.close() |
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30 testdispatch(b"add foo") |
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31 testdispatch(b"commit -m commit1 -d 2000-01-01 foo") |
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32 |
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33 # append to file 'foo' and commit |
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34 f = open('foo', 'ab') |
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35 f.write(b'bar\n') |
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36 f.close() |
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37 testdispatch(b"commit -m commit2 -d 2000-01-02 foo") |
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38 |
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39 # check 88803a69b24 (fancyopts modified command table) |
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40 testdispatch(b"log -r 0") |
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41 testdispatch(b"log -r tip") |