[root@vds ioping-master]# ./ioping -c 10 /
4 KiB <<< / (ext4 /dev/vda1): request=1 time=228.4 us (warmup)
4 KiB <<< / (ext4 /dev/vda1): request=2 time=221.1 us
4 KiB <<< / (ext4 /dev/vda1): request=3 time=307.7 us
4 KiB <<< / (ext4 /dev/vda1): request=4 time=382.3 us
4 KiB <<< / (ext4 /dev/vda1): request=5 time=313.9 us
4 KiB <<< / (ext4 /dev/vda1): request=6 time=291.7 us
4 KiB <<< / (ext4 /dev/vda1): request=7 time=228.0 us (fast)
4 KiB <<< / (ext4 /dev/vda1): request=8 time=291.1 us
4 KiB <<< / (ext4 /dev/vda1): request=9 time=227.6 us (fast)
4 KiB <<< / (ext4 /dev/vda1): request=10 time=350.4 us

--- / (ext4 /dev/vda1) ioping statistics ---
9 requests completed in 2.61 ms, 36 KiB read, 3.44 k iops, 13.5 MiB/s
generated 10 requests in 9.00 s, 40 KiB, 1 iops, 4.44 KiB/s
min/avg/max/mdev = 221.1 us / 290.4 us / 382.3 us / 53.3 us