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[git] Update references changed on the remote repo only #853

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merged 1 commit into from
Dec 4, 2024

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sduenas
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@sduenas sduenas commented Dec 3, 2024

When repositories are synched, the backend needs to update the local references to the ones set on the remote repository. The backend processed all the references, including those up to date. This made the synchronization very slow.

With this commit, only the references that were updated on the remote repository will be modified locally. We have improved the performance by 2. Repositories are in sync two or more times than before.

Performance data using https://github.com/eclipse-platform/eclipse.platform.releng.buildtools.git, when the repository hasn't been updated.

  • Before this patch
time perceval git https://github.com/eclipse-platform/eclipse.platform.releng.buildtools.git --latest-items

real	0m5,380s
user	0m1,802s
sys	0m2,000s
  • Using this patch
time perceval git https://github.com/eclipse-platform/eclipse.platform.releng.buildtools.git --latest-items

real	0m2,551s
user	0m0,823s
sys	0m0,115s

When repositories are synched, the backend needs to update
the local references to the ones set on the remote repository.
The backend processed all the references, including those
up to date. This made the synchronization very slow.

With this commit, only the references that were updated on
the remote repository will be modified locally. We have
improved the performance by 2. Repositories are in sync
two or more times than before.

Signed-off-by: Santiago Dueñas <sduenas@bitergia.com>
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@jjmerchante jjmerchante left a comment

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LGTM

@jjmerchante jjmerchante merged commit 02512e2 into chaoss:master Dec 4, 2024
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@sduenas sduenas deleted the update-git-refs branch December 11, 2024 08:52
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2 participants