Ask HN: How fast is your CI these days?
With the age of agents CI costs are generally going up, how is your build setup handling things? Have you been able to optimize, and how did you? Most importantly, how fast is it?
I would napkin math the averaged cost per-review to be less than $1, which is less than our most rigorous validation pathway in CI (needs GPU for up to an hour). Time-wise around ~10-15m, with variability - and a bug in Argo with pod scheduling delays. This is fine because developers check in on their own PRs when they do and then make the changes that are needed. A key point here is that we are keeping humans in the loop in the PR.
This is a large monorepo, I would expect much lower numbers for polyrepo setups.
More or less, I did:
- Avoid unnecessary work
- Don't boot more often than needed
- Parallelism in tests
- Caching rules
My post has an ongoing live survey with ~570 responses:
- 30% says 5-15m
- 26% says >30m
- 23% says 15-30m
- 13% says 2-5m
- 8% says <2m
was around 40 mins on the critical path at the start of the year. gains came mostly from sharding tests, replacing webpack with vite, eslint/prettier with oxlint/oxfmt, caching node modules