My VPS has high dd with low ioping...what can you tell from the result? which one should I trust more? Two tests were done within 30 seconds.
dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 16384+0 records in 16384+0 records out 1073741824 bytes (1.1 GB) copied, 8.61133 s, 125 MB/s ioping -Dc 10 . 4096 bytes from . (simfs /vz/private/2718): request=1 time=287.2 ms 4096 bytes from . (simfs /vz/private/2718): request=2 time=168.4 ms 4096 bytes from . (simfs /vz/private/2718): request=3 time=26.3 ms 4096 bytes from . (simfs /vz/private/2718): request=4 time=39.2 ms 4096 bytes from . (simfs /vz/private/2718): request=5 time=28.9 ms 4096 bytes from . (simfs /vz/private/2718): request=6 time=41.3 ms 4096 bytes from . (simfs /vz/private/2718): request=7 time=5.8 ms 4096 bytes from . (simfs /vz/private/2718): request=8 time=551.8 ms 4096 bytes from . (simfs /vz/private/2718): request=9 time=9.1 ms 4096 bytes from . (simfs /vz/private/2718): request=10 time=87.2 ms --- . (simfs /vz/private/2718) ioping statistics --- 10 requests completed in 10259.9 ms, 8 iops, 0.0 mb/s min/avg/max/mdev = 5.8/124.5/551.8/165.1 ms