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ci: cap ccache at 300M and evict entries unused for a day so depends caches stop getting evicted #8009

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Merged
PastaPastaPasta merged 1 commit into from
Nov 1, 2026
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ci: cap ccache at 300M and evict entries unused for a day so depends caches stop getting evicted #8009

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5 changes: 4 additions & 1 deletion .github/workflows/build-src.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -171,13 +171,16 @@ jobs:
# tests run code built from cached objects; drop the credential even
# if the compile fails.
trap 'rm -f "${RUNNER_TEMP}/ccache-netrc"' EXIT
CCACHE_MAXSIZE="600M"
CCACHE_MAXSIZE="300M"
CACHE_DIR="/cache"
mkdir /output
BASE_OUTDIR="/output"
source ./ci/dash/matrix.sh
./ci/dash/build_src.sh
{ echo "### ccache: ${BUILD_TARGET}"; echo '```'; ccache --show-stats; echo '```'; } >> "${GITHUB_STEP_SUMMARY}"
# Hits refresh mtime, so this keeps only what recent builds used
# and the saved cache stays near one build's working set.
ccache --evict-older-than 1d
ccache -c
du -hd0 "${BASE_OUTDIR}"
rm -rf "${BASE_OUTDIR}"
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