1 # Test job that demonstrates how to use the latency target 2 # profiling. Fio will find the queue depth between 1..128 3 # that fits within the latency constraints of this 4k random 4 # read workload. 5 6 [global] 7 bs=4k 8 rw=randread 9 random_generator=lfsr 10 direct=1 11 ioengine=libaio 12 iodepth=128 13 # Set max acceptable latency to 500msec 14 latency_target=500000 15 # profile over a 5s window 16 latency_window=5000000 17 # 99.9% of IOs must be below the target 18 latency_percentile=99.9 19 20 [device] 21 filename=/dev/sda 22
