Mercurial > hg
annotate tests/test-issue1802.t @ 16363:2cdd7e63211b
parsers: incrementally parse the revlog index in C
We only parse entries in a revlog index file when they are actually
needed, and cache them when first requested.
This makes a huge difference to performance on large revlogs when
accessing the tip revision or performing a handful of numeric lookups
(very common cases). For instance, "hg --time tip --template {node}"
on a tree with 300,000 revs takes 0.15 before, 0.02 after.
Even for revlog-intensive operations (e.g. running "hg log" to
completion), the lazy approach is about 1% faster than the eager
parse_index2.
author | Bryan O'Sullivan <bryano@fb.com> |
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date | Thu, 05 Apr 2012 13:00:35 -0700 |
parents | efdcce3fd2d5 |
children | f2719b387380 |
rev | line source |
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1 $ "$TESTDIR/hghave" execbit || exit 80 |
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2 |
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3 Create extension that can disable exec checks: |
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4 |
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5 $ cat > noexec.py <<EOF |
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6 > from mercurial import extensions, util |
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7 > def setflags(orig, f, l, x): |
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8 > pass |
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9 > def checkexec(orig, path): |
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10 > return False |
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11 > def extsetup(ui): |
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12 > extensions.wrapfunction(util, 'setflags', setflags) |
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13 > extensions.wrapfunction(util, 'checkexec', checkexec) |
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14 > EOF |
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15 |
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16 $ hg init unix-repo |
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17 $ cd unix-repo |
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18 $ touch a |
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19 $ hg add a |
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20 $ hg commit -m 'unix: add a' |
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21 $ hg clone . ../win-repo |
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22 updating to branch default |
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23 1 files updated, 0 files merged, 0 files removed, 0 files unresolved |
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24 $ chmod +x a |
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25 $ hg commit -m 'unix: chmod a' |
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26 $ hg manifest -v |
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27 755 * a |
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28 |
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29 $ cd ../win-repo |
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30 |
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31 $ touch b |
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32 $ hg add b |
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33 $ hg commit -m 'win: add b' |
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34 |
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35 $ hg manifest -v |
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36 644 a |
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37 644 b |
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38 |
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39 $ hg pull |
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40 pulling from $TESTTMP/unix-repo |
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41 searching for changes |
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42 adding changesets |
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43 adding manifests |
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44 adding file changes |
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45 added 1 changesets with 0 changes to 0 files (+1 heads) |
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46 (run 'hg heads' to see heads, 'hg merge' to merge) |
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47 |
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48 $ hg manifest -v -r tip |
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49 755 * a |
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50 |
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51 Simulate a Windows merge: |
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52 |
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53 $ hg --config extensions.n=$TESTTMP/noexec.py merge --debug |
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54 searching for copies back to rev 1 |
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55 unmatched files in local: |
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56 b |
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57 resolving manifests |
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58 overwrite: False, partial: False |
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59 ancestor: a03b0deabf2b, local: d6fa54f68ae1+, remote: 2d8bcf2dda39 |
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60 a: update permissions -> e |
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61 updating: a 1/1 files (100.00%) |
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62 0 files updated, 0 files merged, 0 files removed, 0 files unresolved |
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63 (branch merge, don't forget to commit) |
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64 |
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65 Simulate a Windows commit: |
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66 |
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67 $ hg --config extensions.n=$TESTTMP/noexec.py commit -m 'win: merge' |
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68 |
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69 $ hg manifest -v |
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70 755 * a |
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71 644 b |