> dd if=/dev/zero of=test.data
load: 0.00  cmd: dd 14469 [runnable] 0.86r 0.11u 0.59s 6% 704k
48128+0 records in
48127+0 records out
24641024 bytes transferred in 0.866405 secs (28440537 bytes/sec)
load: 0.00  cmd: dd 14469 [runnable] 1.72r 0.17u 1.12s 11% 740k
69790+0 records in
69789+0 records out
35731968 bytes transferred in 1.723503 secs (20732178 bytes/sec)
load: 0.00  cmd: dd 14469 [runnable] 2.50r 0.28u 1.66s 16% 740k
78657+0 records in
78656+0 records out
40271872 bytes transferred in 2.559441 secs (15734637 bytes/sec)
load: 0.00  cmd: dd 14469 [runnable] 3.41r 0.31u 2.19s 21% 728k
94113+0 records in
94112+0 records out
48185344 bytes transferred in 3.409517 secs (14132601 bytes/sec)
^C106897+0 records in
106896+0 records out
54730752 bytes transferred in 4.066892 secs (13457636 bytes/sec)
>