root@orangepizero2:~# f3probe --destructive --time-ops /dev/sda
F3 probe 7.1
Copyright (C) 2010 Digirati Internet LTDA.
This is free software; see the source for copying conditions.

WARNING: Probing normally takes from a few seconds to 15 minutes, but
         it can take longer. Please be patient.

Good news: The device `/dev/sda' is the real thing

Device geometry:
                 *Usable* size: 119.24 GB (250069680 blocks)
                Announced size: 119.24 GB (250069680 blocks)
                        Module: 128.00 GB (2^37 Bytes)
        Approximate cache size: 0.00 Byte (0 blocks), need-reset=no
           Physical block size: 512.00 Byte (2^9 Bytes)

Probe time: 1'03"
 Operation: total time / count = avg time
      Read: 363.3ms / 4817 = 75us
     Write: 1'01" / 4192321 = 14us
     Reset: 1us / 1 = 1us

/dev/sda:
 Timing cached reads:   1478 MB in  2.00 seconds = 738.44 MB/sec
 Timing buffered disk reads: 102 MB in  3.04 seconds =  33.59 MB/sec
root@orangepizero2:~# hdparm -tT /dev/sda

/dev/sda:
 Timing cached reads:   1462 MB in  2.00 seconds = 730.99 MB/sec
 Timing buffered disk reads: 102 MB in  3.06 seconds =  33.38 MB/sec
root@orangepizero2:~# hdparm -tT /dev/sda

/dev/sda:
 Timing cached reads:   1430 MB in  2.00 seconds = 715.17 MB/sec
 Timing buffered disk reads: 102 MB in  3.01 seconds =  33.94 MB/sec

/dev/mmcblk0:
 Timing cached reads:   1450 MB in  2.00 seconds = 725.13 MB/sec
 HDIO_DRIVE_CMD(identify) failed: Invalid argument
 Timing buffered disk reads: 198 MB in  3.00 seconds =  65.95 MB/sec
root@orangepizero2:~# hdparm -tT /dev/mmcblk0

/dev/mmcblk0:
 Timing cached reads:   1446 MB in  2.00 seconds = 723.34 MB/sec
 HDIO_DRIVE_CMD(identify) failed: Invalid argument
 Timing buffered disk reads: 200 MB in  3.03 seconds =  66.02 MB/sec
root@orangepizero2:~# hdparm -tT /dev/mmcblk0

/dev/mmcblk0:
 Timing cached reads:   1422 MB in  2.00 seconds = 710.85 MB/sec
 HDIO_DRIVE_CMD(identify) failed: Invalid argument
 Timing buffered disk reads: 198 MB in  3.00 seconds =  65.98 MB/sec