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cgroup-limit: support running test where DOTNET_PROCESSOR_COUNT is set. #397

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Merged
tmds merged 1 commit into from
Nov 13, 2025
Merged

cgroup-limit: support running test where DOTNET_PROCESSOR_COUNT is set. #397

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26 changes: 5 additions & 21 deletions cgroup-limit/test.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -14,21 +14,6 @@ if [[ "$(stat -f -c "%T" /sys/fs/cgroup)" == "cgroup2fs" ]] ; then
CGROUPV2=true
fi

if [[ $CGROUPV2 == true ]] && [[ $(dotnet --version) == "3."* ]]; then
echo "cgroup v2 is not fully supported on .NET Core 3.x. Skipping."
exit 0
fi

# For mono-based runtimes (ppc64le, s390x), cgroup support is only functional
# on .NET 7.0 and later.
if [[ "$(uname -m)" == "s390x" ]] || [[ "$(uname -m)" == "ppc64le" ]] ; then
IFS='.-' read -ra VERSION <<< "${1:-$(dotnet --version)}"
if [[ "${VERSION[0]}" -lt "7" ]]; then
echo "cgroup support is not available on Mono-based runtimes before .NET 7. Skipping."
exit 0
fi
fi

if [ -z "$(command -v systemctl)" ]; then
echo "Environment does not use systemd"
exit 0
Expand All @@ -41,18 +26,17 @@ if [ "$UID" != "0" ]; then
if ! grep -q "cpu" "/sys/fs/cgroup/user.slice/user-$UID.slice/user@$UID.service/cgroup.controllers" ; then
# user can't set cpu limits, use sudo.
SYSTEMD_RUN="sudo -n $SYSTEMD_RUN"

# Pass DOTNET_ROOT to support testing against a dotnet tarball.
# On RHEL 7 we don't pass the envvar because systemd-run doesn't support '-E' yet and the envvar is passed by default.
if [[ "$runtime_id" != "rhel.7"* ]]; then
SYSTEMD_RUN="$SYSTEMD_RUN -E DOTNET_ROOT=$DOTNET_ROOT"
fi
else
# run on behalf of user.
SYSTEMD_RUN="$SYSTEMD_RUN --user"
fi
fi

# Pass DOTNET_ROOT to support testing against a dotnet tarball.
SYSTEMD_RUN="$SYSTEMD_RUN -E DOTNET_ROOT=$DOTNET_ROOT"
# Unset DOTNET_PROCESSOR_COUNT so .NET won't return its value instead of the cgroup CPU limit.
SYSTEMD_RUN="$SYSTEMD_RUN -E DOTNET_PROCESSOR_COUNT="

memory_args="-p MemoryLimit=100M"
if [[ $CGROUPV2 == true ]]; then
memory_args="-p MemoryMax=100M"
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