tests/test-push-checkheads-pruned-B8.t
author Martijn Pieters <mj@zopatista.com>
Tue, 31 Jul 2018 19:37:54 +0200
changeset 38781 0a57945aaf7f
parent 35709 1a09dad8b85a
child 39480 89630d0b3e23
permissions -rw-r--r--
manifest: persist the manifestfulltext cache Reconstructing the manifest from the revlog takes time, so much so that there already is a LRU cache to avoid having to load a manifest multiple times. This patch persists that LRU cache in the .hg/cache directory, so we can re-use this cache across hg commands. Commit benchmark (run on Macos 10.13 on a 2017-model Macbook Pro with Core i7 2.9GHz and flash drive), testing without and with patch run 5 times, baseline is r2a227782e754: * committing to an existing file, against the mozilla-central repository. Baseline real time average 1.9692, with patch 1.3786. A new debugcommand "hg debugmanifestfulltextcache" lets you inspect the cache, clear it, or add specific manifest nodeids to it. When calling repo.updatecaches(), the manifest(s) for the working copy parents are added to the cache. The hg perfmanifest command has an additional --clear-disk switch to clear this cache when testing manifest loading performance. Using this command to test performance on the firefox repository for revision f947d902ed91, whose manifest has a delta chain length of 60540, we see: $ hg perfmanifest f947d902ed91 --clear-disk ! wall 0.972253 comb 0.970000 user 0.850000 sys 0.120000 (best of 10) $ hg debugmanifestfulltextcache -a `hg log --debug -r f947d902ed91 | grep manifest | cut -d: -f3` Cache contains 1 manifest entries, in order of most to least recent: id: 0294517df4aad07c70701db43bc7ff24c3ce7dbc, size 25.6 MB Total cache data size 25.6 MB, on-disk 0 bytes $ hg perfmanifest f947d902ed91 ! wall 0.036748 comb 0.040000 user 0.020000 sys 0.020000 (best of 100) Worst-case scenario: a manifest text loaded from a single delta; in the firefox repository manifest node 9a1246ff762e is the chain base for the manifest attached to revision f947d902ed91. Loading this from a full cache file is just as fast as without the cache; the extra node ids ensure a big full cache: $ for node in 9a1246ff762e 1a1922c14a3e 54a31d11a36a 0294517df4aa; do > hgd debugmanifestfulltextcache -a $node > /dev/null > done $ hgd perfmanifest -m 9a1246ff762e ! wall 0.077513 comb 0.080000 user 0.030000 sys 0.050000 (best of 100) $ hgd perfmanifest -m 9a1246ff762e --clear-disk ! wall 0.078547 comb 0.080000 user 0.070000 sys 0.010000 (best of 100)
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====================================
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Testing head checking code: Case B-2
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====================================
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Mercurial checks for the introduction of new heads on push. Evolution comes
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into play to detect if existing branches on the server are being replaced by
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some of the new one we push.
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This case is part of a series of tests checking this behavior.
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Category B: simple case involving pruned changesets
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TestCase 2: multi-changeset branch, head is pruned, rest is superceeded, through other
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.. old-state:
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..
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.. * 2 changeset branch
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..
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.. new-state:
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..
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.. * old head is rewritten then pruned
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.. * 1 new branch succeeding to the other changeset in the old branch (through another obsolete branch)
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..
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.. expected-result:
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..
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.. * push allowed
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..
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.. graph-summary:
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..
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..   B ø⇠⊗ B'
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..     | | A'
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..   A ø⇠ø⇠◔ A''
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..     |/ /
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..     | /
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..     |/
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..     
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  $ . $TESTDIR/testlib/push-checkheads-util.sh
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Test setup
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----------
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  $ mkdir B8
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  $ cd B8
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  $ setuprepos
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  creating basic server and client repo
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  updating to branch default
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  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
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  $ cd server
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  $ mkcommit B0
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  $ cd ../client
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  $ hg pull
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  pulling from $TESTTMP/B8/server
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  searching for changes
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  adding changesets
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  adding manifests
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  adding file changes
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  added 1 changesets with 1 changes to 1 files
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  new changesets d73caddc5533
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  (run 'hg update' to get a working copy)
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  $ hg up 0
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  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
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  $ mkcommit A1
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  created new head
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  $ mkcommit B1
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  $ hg up 0
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  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
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  $ mkcommit A2
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  created new head
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  $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
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  obsoleted 1 changesets
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  1 new orphan changesets
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  $ hg debugobsolete `getid "desc(B0)" ` `getid "desc(B1)"`
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  obsoleted 1 changesets
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  $ hg debugobsolete --record-parents `getid "desc(B1)"`
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  obsoleted 1 changesets
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  $ hg debugobsolete `getid "desc(A1)" ` `getid "desc(A2)"`
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  obsoleted 1 changesets
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  $ hg log -G --hidden
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  @  c1f8d089020f (draft): A2
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  |
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  | x  262c8c798096 (draft): B1
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  | |
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  | x  f6082bc4ffef (draft): A1
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  |/
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  | x  d73caddc5533 (draft): B0
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  | |
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  | x  8aaa48160adc (draft): A0
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  |/
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  o  1e4be0697311 (public): root
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Actual testing
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--------------
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  $ hg push
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  pushing to $TESTTMP/B8/server
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  searching for changes
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  adding changesets
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  adding manifests
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  adding file changes
605c38105950 obsolescence: add test for the "branch replacement" logic during push, case B8
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
diff changeset
   101
  added 1 changesets with 1 changes to 1 files (+1 heads)
605c38105950 obsolescence: add test for the "branch replacement" logic during push, case B8
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
diff changeset
   102
  4 new obsolescence markers
33252
53b3a1968aa6 obsolete: reports the number of local changeset obsoleted when unbundling
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 32015
diff changeset
   103
  obsoleted 2 changesets
32015
605c38105950 obsolescence: add test for the "branch replacement" logic during push, case B8
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
diff changeset
   104
605c38105950 obsolescence: add test for the "branch replacement" logic during push, case B8
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents:
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   105
  $ cd ../..