Systemd/test/TEST-32-OOMPOLICY/testsuite.sh

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#!/usr/bin/env bash
set -ex
set -o pipefail
# Let's run this test only if the "memory.oom.group" cgroupfs attribute
# exists. This test is a bit too strict, since the "memory.events"/"oom_kill"
# logic has been around since a longer time than "memory.oom.group", but it's
# an easier thing to test for, and also: let's not get confused by older
# kernels where the concept was still new.
if test -f /sys/fs/cgroup/system.slice/testsuite.service/memory.oom.group ; then
systemd-analyze log-level debug
systemd-analyze log-target console
# Run a service that is guaranteed to be the first candidate for OOM killing
systemd-run --unit=oomtest.service -p Type=exec -p OOMScoreAdjust=1000 -p OOMPolicy=stop -p MemoryAccounting=yes /bin/sleep infinity
# Trigger an OOM killer run
echo 1 > /proc/sys/kernel/sysrq
echo f > /proc/sysrq-trigger
while : ; do
STATE=`systemctl show -p ActiveState --value oomtest.service`
[ "$STATE" = "failed" ] && break
sleep .5
done
RESULT=`systemctl show -p Result --value oomtest.service`
test "$RESULT" = "oom-kill"
systemd-analyze log-level info
fi
echo OK > /testok
exit 0