The Disk I/O attributes refer to disk input/output characteristics, including transfer rates, block read rates, and block write rates.
Note: These attributes are only available for systems with a 2.4 (or higher) kernel.
Blk Rds per sec Indicates the amount of data read from the drive expressed in a number of blocks per second. A block is of indeterminate size. Valid entry is an integer.
Blk wrtn per sec Indicates the amount of data written to the drive expressed in a number of blocks per second. A block is of indeterminate size. Valid entry is an integer.
Blks read The total number of blocks read. Valid entry is an integer.
Blks wrtn The total number of blocks written. Valid entry is an integer.
Dev Major Major number of the device. Valid entry is an integer.
Dev Minor Distinctive minor number for device. Valid entry is an integer.
Dev Name Name of the device as appears under the /dev directory.
System Name Name of the host system. Valid entry is an alphanumeric text string, with a maximum length of 64 characters.
Timestamp The date and time the agent collects information as set on the monitored system. The timestamp format for SCAN and STR functions is CYYMMDDHHMMSSmmm (as in 1020315064501000 for 03/15/02 06:45:01) where:
C = Century (0 for 20th, 1 for 21st)
Y = Year
M = Month
D = Day
H = Hour
M = Minute
S = Second
m = millisecond
Transfers per sec Indicates the number of transfers per second that were issued to the device. A transfer is an I/O request to the device. Multiple logical requests can be combined into a single I/O request to the device. A transfer is of indeterminate size. Valid entry is an integer.