outgoing: add a simple fastpath when there is no common This further speed up case like `hg bundle --all` for larger repository. ### data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog # benchmark.name = hg.command.bundle # bin-env-vars.hg.flavor = default # bin-env-vars.hg.py-re2-module = default # benchmark.variants.revs = all # benchmark.variants.type = none-streamv2 before: 316.749699 after: 311.165461 (-1.76%, -5.58) There is further work to be done in this area like not doing any outgoing computation in the stream case for example. however the recent changes already gives use a large win for a small amount of local work. ### benchmark.name = hg.command.bundle # bin-env-vars.hg.flavor = default # bin-env-vars.hg.py-re2-module = default # benchmark.variants.revs = all # benchmark.variants.type = none-streamv2 ## data-env-vars.name = mercurial-public-2024-03-22-zstd-sparse-revlog pre-%ln-change: 1.263859 the-%ln-change: 0.700229 (-44.60%, -0.56) prev-changeset: 0.496050 (-60.75%, -0.77) this-changeset: 0.495243 (-60.81%, -0.77) ## data-env-vars.name = tryton-public-2024-03-22-zstd-sparse-revlog pre-%ln-change: 2.975765 the-%ln-change: 1.870798 (-37.13%, -1.10) prev-changeset: 1.461583 (-50.88%, -1.51) this-changeset: 1.469185 (-50.63%, -1.51) ## data-env-vars.name = pypy-2024-03-22-zstd-sparse-revlog pre-%ln-change: 4.540080 the-%ln-change: 3.401700 (-25.07%, -1.14) prev-changeset: 2.915810 (-35.78%, -1.62) this-changeset: 2.911643 (-35.87%, -1.63) ## data-env-vars.name = heptapod-public-2024-03-25-zstd-sparse-revlog pre-%ln-change: 10.138396 the-%ln-change: 7.750458 (-23.55%, -2.39) prev-changeset: 6.665565 (-34.25%, -3.47) this-changeset: 6.672078 (-34.19%, -3.47) ## data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog pre-%ln-change: 399.484481 the-%ln-change: 346.508952 (-13.26%, -52.98) prev-changeset: 316.749699 (-20.71%, -82.73) this-changeset: 311.165461 (-22.11%, -88.32)

     1

  $ hg init a

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  $ cd a

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  $ echo 123 > a

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  $ hg add a

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  $ hg commit -m "a" -u a

     6

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  $ cd ..

     8

  $ hg init b

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  $ cd b

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  $ echo 321 > b

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  $ hg add b

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  $ hg commit -m "b" -u b

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  $ hg pull ../a

    15

  pulling from ../a

    16

  searching for changes

    17

  abort: repository is unrelated

    18

  [255]

    19

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  $ hg pull -f ../a

    21

  pulling from ../a

    22

  searching for changes

    23

  warning: repository is unrelated

    24

  requesting all changes

    25

  adding changesets

    26

  adding manifests

    27

  adding file changes

    28

  added 1 changesets with 1 changes to 1 files (+1 heads)

    29

  new changesets 9a79c33a9db3

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  (run 'hg heads' to see heads, 'hg merge' to merge)

    31

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  $ hg heads

    33

  changeset:   1:9a79c33a9db3

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  tag:         tip

    35

  parent:      -1:000000000000

    36

  user:        a

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  date:        Thu Jan 01 00:00:00 1970 +0000

    38

  summary:     a

    39

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  changeset:   0:01f8062b2de5

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  user:        b

    42

  date:        Thu Jan 01 00:00:00 1970 +0000

    43

  summary:     b

    44

    45

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  $ cd ..