CPU regression in github actions since March 17th

[howardjohn]

Why are you starting this discussion?

Bug

What GitHub Actions topic or product is this about?

General

Discussion Details

We are seeing unusual behavior on our Github Actions performance with the standard free tier 4 core amd64 linux tests. We have CPU-heavy compile jobs that started taking >2x longer sometime between Tue, 17 Mar 2026 00:12:56 GMT and Tue, 17 Mar 2026 01:11:11 GMT. These jobs used to consistently take 3min and now consistently take 6m40s before/after this date. This is not related to a code change on our end, as we did not have any code change and we have re-run older code and seen the slow behavior.

Has anyone else seem similar issues in actions performance?

[github-actions[bot]]

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