[Nightly CI] CCache hit rates have become <1%
Open
- Dominant language
- C++
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Description
The nightly ccache hit rates used to be -- on average -- pretty good, but they've since dropped to <1%. This has led to every nightly build being 1 to 2 hours.
Contributor guide
No contributing guide indexed for this repository
Research direction
The issue does not identify files, tests, or a configuration entry point. Start by tracing the nightly CI's ccache configuration and measuring why hit rates are below 1%; done means restoring materially higher hit rates and reducing nightly builds from 1–2 hours.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- build-system, ci-cd
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100