check_iostat_bsd

Provides extended disk information as performance data. Tested with FreeBSD iostat.

Usage: check_iostat_bsd -n samples_count -d device -t|r|s|i|o|a
device: run iostat -x and find your device name in the first column, example: -d aacd0

-n samples count (default=3, first is not taken into account)
-r read operations per second
-s write operations per second
-t IO transactions per second (read + write)
-i kilobytes read per second
-o kilobytes write per second
-a average duration of transactions, in milliseconds

t, r, s, i, o, a parameters can be used in any combinations, e.g.:
check_iostat_bsd -n 5 -d aacd0 -t -r -s -i -o -a