dT: 30.001s  w: 30.000s
 L(q)  ops/s    r/s   kBps   ms/r    w/s   kBps   ms/w   %busy Name
    0      0      0      0    0.0      0      0    0.0    0.0| acd0
    0      0      0      0    0.0      0      0    0.0    0.0| acd0t01
    0      0      0      0    0.0      0      0    0.0    0.0| iso9660/FreeBSD_Install
    0     37      8    153    9.7     29    670  241.0   10.7| mfid0
    0    117     83   3478   11.0     34    645   27.7   65.2| mfid1
    0     37      8    153    9.9     29    670  241.4   10.9| mfid0s1
    0      0      0      0    0.0      0      3   13.7    0.1| mfid0s1a
    0      0      0      0    0.0      0      0    0.0    0.0| mfid0s1b
    0      0      0      0    0.0      0      0    0.0    0.0| mfid0s1c
    0      1      0      0    0.0      1     15   64.1    0.5| mfid0s1d
    0      2      0      0    6.4      1     23   58.1    0.6| mfid0s1e
    0     34      8    153   10.0     26    629  263.4   10.2| mfid0s1f