root@atlantis:/usr/src/tools/tools/usbtest # dd if=/dev/zero of=/dev/da0 bs=1M count=1024 & iostat -w 1 /dev/da0 [1] 85973 tty cpu tin tout us ni sy in id 0 4 0 0 0 0 100 0 77 0 0 0 0 100 0 30 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 1 0 99 0 27 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 27 0 0 0 0 100 0 29 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 27 0 0 0 0 100 0 29 0 0 0 0 100 0 28 0 0 1 0 99 0 27 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 1 0 99 0 27 0 0 0 0 99 0 27 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 27 0 0 0 0 100 0 29 0 0 0 0 99 0 27 0 0 0 0 99 0 27 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 99 0 27 0 0 0 0 100 tty cpu tin tout us ni sy in id 0 28 0 0 0 0 99 0 81 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 99 0 27 0 0 0 0 99 0 27 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 99 0 27 0 0 0 0 100 0 28 0 0 0 0 99 0 27 0 0 0 0 100 0 29 0 0 0 0 100 0 28 0 0 0 0 99 0 27 0 0 0 0 99 0 27 0 0 0 0 99 0 27 0 0 0 0 99 0 27 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 100 0 28 0 0 0 0 99 0 26 0 0 0 0 99 0 28 0 0 0 0 100 1024+0 records in 1024+0 records out 1073741824 bytes transferred in 73.818193 secs (14545761 bytes/sec)