When system has large count of cpus(eg. 96), the test failed as aio-nr over
aio-max-nr limitation.
This patch continues to use 1024 as default iodepth, but change it if
iodepth*$(nproc) > aio-max-nr.
Signed-off-by: Xiao Liang <xiliang@xxxxxxxxxx>
---
tests/block/020 | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/tests/block/020 b/tests/block/020
index 39dde66..6583a3f 100755
--- a/tests/block/020
+++ b/tests/block/020
@@ -29,10 +29,16 @@ test() {
# shellcheck disable=SC2207
scheds=($(sed 's/[][]//g' /sys/block/nullb0/queue/scheduler))
+ aio_max_nr=$(cat /proc/sys/fs/aio-max-nr)
+ max_iodepth=$((aio_max_nr/$(nproc)))
+ iodepth=1024
+ if (( iodepth > max_iodepth )); then
+ iodepth=$max_iodepth
+ fi
for sched in "${scheds[@]}"; do
echo "Testing $sched" >> "$FULL"
echo "$sched" > /sys/block/nullb0/queue/scheduler
- _fio_perf --bs=4k --ioengine=libaio --iodepth=1024 \
+ _fio_perf --bs=4k --ioengine=libaio --iodepth=$iodepth \
--numjobs="$(nproc)" --rw=randread --name=async \
--filename=/dev/nullb0 --size=1g --direct=1 \
--runtime=10
--
2.17.2
