tests/shell/lock_contention.sh

2 # kernel lock contention analysis test
30 	if ! perf list | grep -q lock:contention_begin; then
31 		echo "[Skip] No lock contention tracepoints"
38 		echo "[Skip] Low number of CPUs (`nproc`), lock event cannot be triggered certainly"
46 	echo "Testing perf lock record and perf lock contention"
47 	perf lock record -o ${perfdata} -- perf bench sched messaging > /dev/null 2>&1
49 	perf lock contention -i ${perfdata} -E 1 -q 2> ${result}
59 	echo "Testing perf lock contention --use-bpf"
61 	if ! perf lock con -b true > /dev/null 2>&1 ; then
66 	# the perf lock contention output goes to the stderr
67 	perf lock con -a -b -E 1 -q -- perf bench sched messaging > /dev/null 2> ${result}
77 	echo "Testing perf lock record and perf lock contention at the same time"
78 	perf lock record -o- -- perf bench sched messaging 2> /dev/null | \
79 	perf lock contention -i- -E 1 -q 2> ${result}
89 	echo "Testing perf lock contention --threads"
90 	perf lock contention -i ${perfdata} -t -E 1 -q 2> ${result}
97 	if ! perf lock con -b true > /dev/null 2>&1 ; then
101 	# the perf lock contention output goes to the stderr
102 	perf lock con -a -b -t -E 1 -q -- perf bench sched messaging > /dev/null 2> ${result}
112 	echo "Testing perf lock contention --lock-addr"
113 	perf lock contention -i ${perfdata} -l -E 1 -q 2> ${result}
120 	if ! perf lock con -b true > /dev/null 2>&1 ; then
124 	# the perf lock contention output goes to the stderr
125 	perf lock con -a -b -l -E 1 -q -- perf bench sched messaging > /dev/null 2> ${result}
135 	echo "Testing perf lock contention --lock-cgroup"
137 	if ! perf lock con -b true > /dev/null 2>&1 ; then
142 	# the perf lock contention output goes to the stderr
143 	perf lock con -a -b -g -E 1 -q -- perf bench sched messaging > /dev/null 2> ${result}
153 	echo "Testing perf lock contention --type-filter (w/ spinlock)"
154 	perf lock contention -i ${perfdata} -Y spinlock -q 2> ${result}
161 	if ! perf lock con -b true > /dev/null 2>&1 ; then
165 	perf lock con -a -b -Y spinlock -q -- perf bench sched messaging > /dev/null 2> ${result}
175 	echo "Testing perf lock contention --lock-filter (w/ tasklist_lock)"
176 	perf lock contention -i ${perfdata} -l -q 2> ${result}
182 	perf lock contention -i ${perfdata} -L tasklist_lock -q 2> ${result}
193 	if ! perf lock con -b true > /dev/null 2>&1 ; then
197 	perf lock con -a -b -L tasklist_lock -q -- perf bench sched messaging > /dev/null 2> ${result}
207 	echo "Testing perf lock contention --callstack-filter (w/ unix_stream)"
208 	perf lock contention -i ${perfdata} -v -q 2> ${result}
214 	perf lock contention -i ${perfdata} -E 1 -S unix_stream -q 2> ${result}
216 		echo "[Fail] Recorded result should have a lock from unix_stream:" "$(cat "${result}")"
221 	if ! perf lock con -b true > /dev/null 2>&1 ; then
225 	perf lock con -a -b -S unix_stream -E 1 -q -- perf bench sched messaging > /dev/null 2> ${result}
227 		echo "[Fail] BPF result should have a lock from unix_stream:" "$(cat "${result}")"
235 	echo "Testing perf lock contention --callstack-filter with task aggregation"
236 	perf lock contention -i ${perfdata} -v -q 2> ${result}
242 	perf lock contention -i ${perfdata} -t -E 1 -S unix_stream -q 2> ${result}
249 	if ! perf lock con -b true > /dev/null 2>&1 ; then
253 	perf lock con -a -b -t -S unix_stream -E 1 -q -- perf bench sched messaging > /dev/null 2> ${result}
262 	echo "Testing perf lock contention --cgroup-filter"
264 	if ! perf lock con -b true > /dev/null 2>&1 ; then
269 	perf lock con -a -b -g -E 1 -F wait_total -q -- perf bench sched messaging > /dev/null 2> ${result}
277 	perf lock con -a -b -g -E 1 -G "${cgroup}" -q -- perf bench sched messaging > /dev/null 2> ${result}
288 	echo "Testing perf lock contention CSV output"
289 	perf lock contention -i ${perfdata} -E 1 -x , --output ${result}
306 	if ! perf lock con -b true > /dev/null 2>&1 ; then
311 	# the perf lock contention output goes to the stderr
312 	perf lock con -a -b -E 1 -x , --output ${result} -- perf bench sched messaging > /dev/null 2>&1