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bisect: avoid adding irrelevant revisions to bisect state...
bisect: avoid adding irrelevant revisions to bisect state When adding new revisions to the bisect state, it only makes sense to add information about revisions that are under consideration (i.e., those that are topologically between the known good and bad revisions). However, if the user passes in a revset (e.g., '!merge()' to exclude merge commits), hg will resolve the revset first and add all matching revisions to the bisect state (which in this case would likely be the majority of revisions in the repo). To avoid this, revisions should only be added to the bisect state if they are between the good and bad revisions (and therefore relevant to the bisection). -- Here are the results of some performance tests using the `mozilla-central` repo (since it is one of the largest freely-available hg repositories in the wild). These tests compare the performance of a locally-built `hg` before and after application of this series. Note that `--noupdate` is passed to avoid including update time (which should not vary across cases). Setup (run between each test): $ hg bisect --reset $ hg bisect --noupdate --bad 56c3ad4bde5c70714b784ccf15d099e0df0f5bde $ hg bisect --noupdate --good 57426696adaf08298af3027fa77486fee0633b13 Test using a revset that returns a very large number of revisions: $ time hg bisect --noupdate --skip '!merge()' > /dev/null Before: real 0m9.398s user 0m9.233s sys 0m0.120s After: real 0m1.513s user 0m1.425s sys 0m0.052s Test using a revset that is expensive to compute: $ time hg bisect --noupdate --skip 'desc("Bug")' > /dev/null Before: real 0m49.853s user 0m49.580s sys 0m0.243s After: real 0m4.120s user 0m4.036s sys 0m0.048s
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test-bundle-phases.t
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$ cat >> $HGRCPATH <<EOF
> [experimental]
> bundle-phases=yes
> [extensions]
> strip=
> drawdag=$TESTDIR/drawdag.py
> EOF
Set up repo with linear history
$ hg init linear
$ cd linear
$ hg debugdrawdag <<'EOF'
> E
> |
> D
> |
> C
> |
> B
> |
> A
> EOF
$ hg phase --public A
$ hg phase --force --secret D
$ hg log -G -T '{desc} {phase}\n'
o E secret
|
o D secret
|
o C draft
|
o B draft
|
o A public
Phases are restored when unbundling
$ hg bundle --base B -r E bundle
3 changesets found
$ hg debugbundle bundle
Stream params: {Compression: BZ}
changegroup -- {nbchanges: 3, targetphase: 2, version: 02} (mandatory: True)
26805aba1e600a82e93661149f2313866a221a7b
f585351a92f85104bff7c284233c338b10eb1df7
9bc730a19041f9ec7cb33c626e811aa233efb18c
cache:rev-branch-cache -- {} (mandatory: False)
phase-heads -- {} (mandatory: True)
26805aba1e600a82e93661149f2313866a221a7b draft
$ hg strip --no-backup C
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o E secret
|
o D secret
|
o C draft
|
o B draft
|
o A public
Root revision's phase is preserved
$ hg bundle -a bundle
5 changesets found
$ hg strip --no-backup A
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o E secret
|
o D secret
|
o C draft
|
o B draft
|
o A public
Completely public history can be restored
$ hg phase --public E
$ hg bundle -a bundle
5 changesets found
$ hg strip --no-backup A
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o E public
|
o D public
|
o C public
|
o B public
|
o A public
Direct transition from public to secret can be restored
$ hg phase --secret --force D
$ hg bundle -a bundle
5 changesets found
$ hg strip --no-backup A
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o E secret
|
o D secret
|
o C public
|
o B public
|
o A public
Revisions within bundle preserve their phase even if parent changes its phase
$ hg phase --draft --force B
$ hg bundle --base B -r E bundle
3 changesets found
$ hg strip --no-backup C
$ hg phase --public B
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o E secret
|
o D secret
|
o C draft
|
o B public
|
o A public
Phase of ancestors of stripped node get advanced to accommodate child
$ hg bundle --base B -r E bundle
3 changesets found
$ hg strip --no-backup C
$ hg phase --force --secret B
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o E secret
|
o D secret
|
o C draft
|
o B draft
|
o A public
Unbundling advances phases of changesets even if they were already in the repo.
To test that, create a bundle of everything in draft phase and then unbundle
to see that secret becomes draft, but public remains public.
$ hg phase --draft --force A
$ hg phase --draft E
$ hg bundle -a bundle
5 changesets found
$ hg phase --public A
$ hg phase --secret --force E
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o E draft
|
o D draft
|
o C draft
|
o B draft
|
o A public
Unbundling change in the middle of a stack does not affect later changes
$ hg strip --no-backup E
$ hg phase --secret --force D
$ hg log -G -T '{desc} {phase}\n'
o D secret
|
o C draft
|
o B draft
|
o A public
$ hg bundle --base A -r B bundle
1 changesets found
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{desc} {phase}\n'
o D secret
|
o C draft
|
o B draft
|
o A public
$ cd ..
Set up repo with non-linear history
$ hg init non-linear
$ cd non-linear
$ hg debugdrawdag <<'EOF'
> D E
> |\|
> B C
> |/
> A
> EOF
$ hg phase --public C
$ hg phase --force --secret B
$ hg log -G -T '{node|short} {desc} {phase}\n'
o 03ca77807e91 E draft
|
| o 4e4f9194f9f1 D secret
|/|
o | dc0947a82db8 C public
| |
| o 112478962961 B secret
|/
o 426bada5c675 A public
Restore bundle of entire repo
$ hg bundle -a bundle
5 changesets found
$ hg debugbundle bundle
Stream params: {Compression: BZ}
changegroup -- {nbchanges: 5, targetphase: 2, version: 02} (mandatory: True)
426bada5c67598ca65036d57d9e4b64b0c1ce7a0
112478962961147124edd43549aedd1a335e44bf
dc0947a82db884575bb76ea10ac97b08536bfa03
4e4f9194f9f181c57f62e823e8bdfa46ab9e4ff4
03ca77807e919db8807c3749086dc36fb478cac0
cache:rev-branch-cache -- {} (mandatory: False)
phase-heads -- {} (mandatory: True)
dc0947a82db884575bb76ea10ac97b08536bfa03 public
03ca77807e919db8807c3749086dc36fb478cac0 draft
$ hg strip --no-backup A
$ hg unbundle -q bundle
$ rm bundle
$ hg log -G -T '{node|short} {desc} {phase}\n'
o 03ca77807e91 E draft
|
| o 4e4f9194f9f1 D secret
|/|
o | dc0947a82db8 C public
| |
| o 112478962961 B secret
|/
o 426bada5c675 A public
$ hg bundle --base 'A + C' -r D bundle
2 changesets found
$ hg debugbundle bundle
Stream params: {Compression: BZ}
changegroup -- {nbchanges: 2, targetphase: 2, version: 02} (mandatory: True)
112478962961147124edd43549aedd1a335e44bf
4e4f9194f9f181c57f62e823e8bdfa46ab9e4ff4
cache:rev-branch-cache -- {} (mandatory: False)
phase-heads -- {} (mandatory: True)
$ rm bundle
$ hg bundle --base A -r D bundle
3 changesets found
$ hg debugbundle bundle
Stream params: {Compression: BZ}
changegroup -- {nbchanges: 3, targetphase: 2, version: 02} (mandatory: True)
112478962961147124edd43549aedd1a335e44bf
dc0947a82db884575bb76ea10ac97b08536bfa03
4e4f9194f9f181c57f62e823e8bdfa46ab9e4ff4
cache:rev-branch-cache -- {} (mandatory: False)
phase-heads -- {} (mandatory: True)
dc0947a82db884575bb76ea10ac97b08536bfa03 public
$ rm bundle
$ hg bundle --base 'B + C' -r 'D + E' bundle
2 changesets found
$ hg debugbundle bundle
Stream params: {Compression: BZ}
changegroup -- {nbchanges: 2, targetphase: 2, version: 02} (mandatory: True)
4e4f9194f9f181c57f62e823e8bdfa46ab9e4ff4
03ca77807e919db8807c3749086dc36fb478cac0
cache:rev-branch-cache -- {} (mandatory: False)
phase-heads -- {} (mandatory: True)
03ca77807e919db8807c3749086dc36fb478cac0 draft
$ rm bundle