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#!/bin/sh
# Ensure that "nproc" honors cgroup quotas and kernel scheduler from systemd
# Copyright (C) 2025-2026 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ nproc
require_root_
systemd-run --version || skip_ 'systemd-run not available'
all=$(nproc --all)
test ${all} != 1 || skip_ 'Single CPU detected'
check_sched_quota()
{
cpu=$1; shift
pct=$1; shift
if systemd-run --scope -q -p CPUQuota=$pct chrt $* true; then
test $(systemd-run --scope -q -p CPUQuota=$pct chrt $* nproc) = $cpu ||
return 1
fi
return 0
}
check_sched_quota 1 100% --other 0 || fail=1
check_sched_quota 1 149% --other 0 || fail=1
check_sched_quota 2 150% --other 0 || fail=1
check_sched_quota 2 249% --other 0 || fail=1
check_sched_quota 1 100% --idle 0 || fail=1
check_sched_quota 1 100% --batch 0 || fail=1
# some schedulers should use all threads
check_sched_quota $all 100% --fifo 1 || fail=1
check_sched_quota $all 100% --rr 1 || fail=1
check_sched_quota $all 100% --deadline \
--sched-runtime 100000000 --sched-deadline 1000000000 \
--sched-period 1000000000 0 || fail=1
Exit $fail
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