DO_diskinfo_cvt

#See busy $10 Linode vm vs this $5 spare DO - https://gist.github.com/fwaggle/0ca82bc8454813550fc21b0200e58d9a
% sudo diskinfo -ctv /dev/gpt/rootfs
/dev/gpt/rootfs
        512             # sectorsize
        21474836480     # mediasize in bytes (20G)
        41943040        # mediasize in sectors
        0               # stripesize
        1073759744      # stripeoffset
        41610           # Cylinders according to firmware.
        16              # Heads according to firmware.
        63              # Sectors according to firmware.
                        # Disk ident.

I/O command overhead:
        time to read 10MB block      0.022799 sec       =    0.001 msec/sector
        time to read 20480 sectors   1.719008 sec       =    0.084 msec/sector
        calculated command overhead                     =    0.083 msec/sector

Seek times:
        Full stroke:      250 iter in   0.025975 sec =    0.104 msec
        Half stroke:      250 iter in   0.034955 sec =    0.140 msec
        Quarter stroke:   500 iter in   0.105145 sec =    0.210 msec
        Short forward:    400 iter in   0.036794 sec =    0.092 msec
        Short backward:   400 iter in   0.101591 sec =    0.254 msec
        Seq outer:       2048 iter in   0.181372 sec =    0.089 msec
        Seq inner:       2048 iter in   0.166712 sec =    0.081 msec
Transfer rates:
        outside:       102400 kbytes in   0.138273 sec =   740564 kbytes/sec
        middle:        102400 kbytes in   0.169185 sec =   605255 kbytes/sec
        inside:        102400 kbytes in   0.186042 sec =   550413 kbytes/sec