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Merged
philliphoff merged 1 commit into from
Oct 11, 2026
+7 −4
Merged

Run each benchmark build from its own checkout #33

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11 changes: 7 additions & 4 deletions .github/workflows/benchmarks.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -132,20 +132,23 @@ jobs:

run() { # run <tree> <artifacts>
echo "::group::$2"
dotnet "$1/$DLL" "${ARGS[@]}" --artifacts "$2"
# Run from inside the tree: BenchmarkDotNet rebuilds the benchmark project it
# finds from the working directory, so running the base build from the head
# checkout would measure the head's code.
(cd "$1" && dotnet "$DLL" "${ARGS[@]}" --artifacts "$2")
echo "::endgroup::"
}

OUT="$RUNNER_TEMP/bdn"
for ((r = 1; r <= ROUNDS; r++)); do
# Alternate the order (base, head, then head, base) so drift cancels out.
if [ "$BASE_BUILT" != "true" ]; then
run . "$OUT/head-$r"
run "$GITHUB_WORKSPACE" "$OUT/head-$r"
elif ((r % 2)); then
run "$RUNNER_TEMP/base" "$OUT/base-$r"
run . "$OUT/head-$r"
run "$GITHUB_WORKSPACE" "$OUT/head-$r"
else
run . "$OUT/head-$r"
run "$GITHUB_WORKSPACE" "$OUT/head-$r"
run "$RUNNER_TEMP/base" "$OUT/base-$r"
fi
done
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