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Merge bitcoin/bitcoin#34474: ci: update ccache to improve hitrate

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7528d18796 ci: show more verbose ccache stats (will)
580e9eefe3 ci: bump CCACHE_MAXSIZE to 2G (will)

Pull request description:

  Currently some CI jobs don't have great ccache hitrates which we should try to improve: https://willcl-ark.github.io/bitcoin-core-ci-stats/graph/ccache/

  - bump ccache maxsize to 2GB in all jobs. We have 150GB shared cache to use, so this should be OK at maximum of 36GB total (current jobset).
  - print more verbose ccache stats in the CI logs

  The idea is that increasing the cache size to > 2x needed size should eliminate any cache thrashing which might be taking place on master builds when we save the cache. Additionally, larger caches result in more hits in general.

ACKs for top commit:
  maflcko:
    lgtm ACK 7528d18796

Tree-SHA512: ae00a05159e3f38d24aebc50a2576c5f11241b1196058a4ca2f5f78909795b891bef20cdc4412f512a2ba09cc9ec65afa5132ac0509b54845dd84f933528500c
This commit is contained in:
merge-script
2026-02-03 10:16:43 +00:00
parent 47c9297172 7528d18796
commit be35408c5a
2 changed files with 2 additions and 3 deletions
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2
ci/test/00_setup_env.sh
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@@ -48,7 +48,7 @@ export RUN_FUZZ_TESTS=${RUN_FUZZ_TESTS:-false}
export BOOST_TEST_RANDOM=${BOOST_TEST_RANDOM:-1}
# See man 7 debconf
export DEBIAN_FRONTEND=noninteractive
export CCACHE_MAXSIZE=${CCACHE_MAXSIZE:-500M}
export CCACHE_MAXSIZE=${CCACHE_MAXSIZE:-2G}
export CCACHE_TEMPDIR=${CCACHE_TEMPDIR:-/tmp/.ccache-temp}
export CCACHE_COMPRESS=${CCACHE_COMPRESS:-1}
# The cache dir.

3
ci/test/03_test_script.sh
View File

@@ -116,7 +116,6 @@ if [ -z "$NO_WERROR" ]; then
fi
ccache --zero-stats
PRINT_CCACHE_STATISTICS="ccache --version | head -n 1 && ccache --show-stats"
# Folder where the build is done.
BASE_BUILD_DIR=${BASE_BUILD_DIR:-$BASE_SCRATCH_DIR/build-$HOST}
@@ -147,7 +146,7 @@ cmake --build "${BASE_BUILD_DIR}" "$MAKEJOBS" --target $GOAL || (
false
)
bash -c "${PRINT_CCACHE_STATISTICS}"
ccache --version | head -n 1 && ccache --show-stats --verbose
hit_rate=$(ccache --show-stats | grep "Hits:" | head -1 | sed 's/.*(\(.*\)%).*/\1/')
if [ "${hit_rate%.*}" -lt 75 ]; then
echo "::notice title=low ccache hitrate::Ccache hit-rate in $CONTAINER_NAME was $hit_rate%"