# iops /dev/sdb
  /dev/sdb,   1.00 TB, 32 threads:
   512 B blocks:   76.7 IO/s,  38.3 KiB/s (314.1 kbit/s)
     1 KiB blocks:   84.4 IO/s,  84.4 KiB/s (691.8 kbit/s)
     2 KiB blocks:   81.3 IO/s, 162.6 KiB/s (  1.3 Mbit/s)
     4 KiB blocks:   80.2 IO/s, 320.8 KiB/s (  2.6 Mbit/s)
     8 KiB blocks:   79.8 IO/s, 638.4 KiB/s (  5.2 Mbit/s)
    16 KiB blocks:   79.2 IO/s,   1.2 MiB/s ( 10.4 Mbit/s)
    32 KiB blocks:   81.8 IO/s,   2.6 MiB/s ( 21.4 Mbit/s)
    64 KiB blocks:   78.0 IO/s,   4.9 MiB/s ( 40.9 Mbit/s)
   128 KiB blocks:   76.0 IO/s,   9.5 MiB/s ( 79.7 Mbit/s)
   256 KiB blocks:   53.9 IO/s,  13.5 MiB/s (113.1 Mbit/s)
   512 KiB blocks:   39.8 IO/s,  19.9 MiB/s (166.9 Mbit/s)
     1 MiB blocks:   33.3 IO/s,  33.3 MiB/s (279.0 Mbit/s)
     2 MiB blocks:   25.3 IO/s,  50.6 MiB/s (424.9 Mbit/s)