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gerrit / git-repo / 8da4861b3860c505e39341b4135c21f67569e4d8
commit8da4861b3860c505e39341b4135c21f67569e4d8[log] [tgz]
authorKuang-che Wu <kcwu@google.com>Tue Oct 22 21:04:41 2024 +0800
committerLUCI <gerrit-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed Oct 23 23:34:34 2024 +0000
tree6f300266c91322df0e61953b84381e1f403074a5
parent39ffd9977e2f6cb1ca1757e59173fc93e0eab72c [diff]
subcmds: reduce multiprocessing serialization overhead

Follow the same approach as 39ffd9977e to reduce serialization overhead.

Below benchmarks are tested with 2.7k projects on my workstation
(warm cache). git tracing is disabled for benchmark.

(seconds)              | v2.48 | v2.48 | this CL | this CL
	               |       |  -j32 |         |    -j32
-----------------------------------------------------------
with clean tree state:
branches (none)        |   5.6 |   5.9 |    1.0  |    0.9
status (clean)         |  21.3 |   9.4 |   19.4  |    4.7
diff (none)            |   7.6 |   7.2 |    5.7  |    2.2
prune (none)           |   5.7 |   6.1 |    1.3  |    1.2
abandon (none)         |  19.4 |  18.6 |    0.9  |    0.8
upload (none)          |  19.7 |  18.7 |    0.9  |    0.8
forall -c true         |   7.5 |   7.6 |    0.6  |    0.6
forall -c "git log -1" |  11.3 |  11.1 |    0.6  |    0.6

with branches:
start BRANCH --all     |  21.9 |  20.3 |   13.6  |    2.6
checkout BRANCH        |  29.1 |  27.8 |    1.1  |    1.0
branches (2)           |  28.0 |  28.6 |    1.5  |    1.3
abandon BRANCH         |  29.2 |  27.5 |    9.7  |    2.2

Bug: b/371638995
Change-Id: I53989a3d1e43063587b3f52f852b1c2c56b49412
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/440221
Reviewed-by: Josip Sokcevic <sokcevic@google.com>
Tested-by: Kuang-che Wu <kcwu@google.com>
Commit-Queue: Kuang-che Wu <kcwu@google.com>
11 files changed
tree: 6f300266c91322df0e61953b84381e1f403074a5
  1. .github/
  2. docs/
  3. hooks/
  4. man/
  5. release/
  6. subcmds/
  7. tests/
  8. .flake8
  9. .gitattributes
  10. .gitignore
  11. .gitreview
  12. .isort.cfg
  13. .mailmap
  14. .project
  15. .pydevproject
  16. color.py
  17. command.py
  18. completion.bash
  19. constraints.txt
  20. editor.py
  21. error.py
  22. event_log.py
  23. fetch.py
  24. git_command.py
  25. git_config.py
  26. git_refs.py
  27. git_ssh
  28. git_superproject.py
  29. git_trace2_event_log.py
  30. git_trace2_event_log_base.py
  31. hooks.py
  32. LICENSE
  33. main.py
  34. MANIFEST.in
  35. manifest_xml.py
  36. pager.py
  37. platform_utils.py
  38. platform_utils_win32.py
  39. progress.py
  40. project.py
  41. pyproject.toml
  42. README.md
  43. repo
  44. repo_logging.py
  45. repo_trace.py
  46. requirements.json
  47. run_tests
  48. run_tests.vpython3
  49. setup.py
  50. ssh.py
  51. SUBMITTING_PATCHES.md
  52. tox.ini
  53. wrapper.py
README.md

repo

Repo is a tool built on top of Git. Repo helps manage many Git repositories, does the uploads to revision control systems, and automates parts of the development workflow. Repo is not meant to replace Git, only to make it easier to work with Git. The repo command is an executable Python script that you can put anywhere in your path.

Contact

Please use the repo-discuss mailing list or issue tracker for questions.

You can file a new bug report under the “repo” component.

Please do not e-mail individual developers for support. They do not have the bandwidth for it, and often times questions have already been asked on repo-discuss or bugs posted to the issue tracker. So please search those sites first.

Install

Many distros include repo, so you might be able to install from there.

# Debian/Ubuntu.
$ sudo apt-get install repo

# Gentoo.
$ sudo emerge dev-vcs/repo

You can install it manually as well as it's a single script.

$ mkdir -p ~/.bin
$ PATH="${HOME}/.bin:${PATH}"
$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/.bin/repo
$ chmod a+rx ~/.bin/repo