IOQUEUE
.-DASD-. >>-IOQUEUE--+------+------------------------------------------->< '-type-'
Requests reporting on I/O queuing. If you specify IOQUEUE, a Monitor
I session must be measuring any I/O queuing activity. Parameter type can be any one of the following:
- A device class:
- DASD
- Direct access storage devices
- TAPE
- Magnetic tape devices
- COMM
- Communication equipment
- CHRDR
- Character reader devices
- UNITR
- Unit record devices
- GRAPH
- Graphic devices
- One or more logical control unit (LCU) numbers:
({aaaa }) {NUMBER} ({aaaa,bbbb:zzzz}) {N } ({aaaa,bbbb,... })
NUMBER requests specific logical control unit numbers, where aaaa, bbbb, and zzzz each represent hexadecimal device numbers. Leading zeroes can be omitted. You can specify any combination of a single number, a list of numbers, or a range of numbers, as long as your entry does not exceed 32 characters, including commas and colons. When you specify a range of numbers, use a colon as a separator to indicate that the report is to consist of all numbers from bbbb up to and including zzzz.
Note: When your system is running as a guest under VM, RMF™ cannot gather data for it. In
this case, the IOQUEUE report is not available.
Example for a display session or background session:
- To request an I/O Queuing Activity report for LCUs representing
all magnetic tape devices, specify:
IOQUEUE TAPE or IOQUEUE(TAPE)
- To request an I/O Queuing Activity report for LCU numbers D, E,
F, 4E, and 55, specify:
IOQUEUE N(D:F,4E,55) or IOQUEUE(N(D:F,4E,55))