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How GitLab decreased repo backup times from 48 hours to 41 minutes with a fix to Git (about.gitlab.com)

submitted 2 weeks ago by chaospatterns@lemmy.world to c/programming@programming.dev

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[-] manxu@piefed.social 11 points 2 weeks ago

we traced the issue to a 15-year-old Git function with O(N²) complexity and fixed it with an algorithmic change, reducing backup times exponentially.

I feel like there is something wrong with this sentence.

[-] drspod@lemmy.ml 8 points 2 weeks ago

They make the same mistake further down the article:

However, the implementation of the command suffered from poor scalability related to reference count, creating a performance bottleneck. As repositories accumulated more references, processing time increased exponentially.

This article writer really loves bullet point lists, too. 🤨

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this post was submitted on 08 Jun 2025

189 points (98.5% liked)

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