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GitHub Actions: Not that scary - Patterns in the Machine

6/1/2025Updated 2/22/2026
https://patternsinthemachine.net/2025/06/github-actions-not-that-scary/

#### GitHub Action Cons - The free host runners are **slow**. The free host virtual machines are about 4-5x slower than my mini-PC (i7-13700H) that hosted my Jenkins server - To mitigate the performance different – it was very simple to run each “compiler” on its own runner in parallel – so my overall build times only went from ~30min to ~40min.

Related Pain Points1件

Free GitHub Actions hosted runners are significantly slower than local infrastructure

5

Free GitHub-hosted runners perform 4-5x slower than comparable local hardware (e.g., i7-13700H mini-PC). This forces teams running Jenkins locally to accept longer build times (30 min to 40 min) even after parallelization, impacting developer velocity.

performanceGitHub Actions