Collection Services data files: QAPMLIOP
This database file includes twinaxial IOP data file entries and lists the fields in the twinaxial IOP data file.
| Field Name | Description | Attribute |
|---|---|---|
| INTNUM | Interval number: The nth sample database interval based on the start time specified in the Create Performance Data (CRTPFRDTA) command. | PD (5,0) |
| DTETIM | Interval date (yymmdd) and time (hhmmss): The date and time of the sample interval. | C (12) |
| INTSEC | Elapsed interval seconds: The number of seconds since the last sample interval. | PD (7,0) |
| IOPRN | IOP resource name. | C(10) |
| LIIOP | Reserved | C (1) |
| LITYPE | IOP type. | C (4) |
| LIRIDC | Resource ID of controller: Field cannot be displayed. | C (8) |
| LITPKT | Total packets transferred. | PD (11,0) |
| LIKBYO | Total KB transmitted from the IOP to the system across the bus. | PD (11,0) |
| LIKBYI | Total KB transmitted to the IOP from the system across the bus. | PD (11,0) |
| LIOPSR | OPSTART bus unit message received from another bus unit using normal flow. | PD (11,0) |
| LIOPSS | OPSTART bus unit message received from another bus unit using reverse flow method 2. | PD (11,0) |
| LISGLR | Signal bus unit message received from another bus unit. | PD (11,0) |
| LIOPST | OPSTARTS sent to another bus unit using reverse flow method 2. | PD (11,0) |
| LISGLS | Signals sent to another bus unit. | PD (11,0) |
| LIRSTQ | Restart queues bus unit message sent to another bus unit. | PD (11,0) |
| LIRQDO | DMA requests sent for output of data: The number of requests the IOP sends to the system for data to be sent from the IOP to the system across the bus. | PD (11,0) |
| LIRQDI | DMA requests sent for input of data: The number of requests the IOP sends to the system for data to be sent to the IOP from the system across the bus. | PD (11,0) |
| LIBNAR | Occurrences of BNA received. | PD (11,0) |
| LIIOQC | Wait-on-I/O queue count: The number of I/O requests on the wait-on-I/O queue at sample time. The wait-on-I/O queue holds I/O requests that are being processed or waiting to be processed. | PD (11,0) |
| LISQC | Suspend queue count: The number of elements on the suspend queue at sample time. | PD (11,0) |
| LIAQC | Active queue count: The number of elements on the active queue at sample time. The active queue holds I/O requests that were sent from the host system and were not yet sent to the wait-on-I/O queue. | PD (11,0) |
| LITWIU | Twinaxial use count: The number of times when the wait-on-I/O queue was sampled and the count was not zero (I/O in progress). If this value is divided by the sample count, the result (times 100) is the percentage of time when I/O is occurring. | PD (5,0) |
| LISMPL | Sample count: The number of times during the snapshot interval that the various IOP queues were sampled. | PD (5,0) |
| LIIDLC | Idle counts (see notes): The number of times the workstation IOP ran an idle loop. This is done when the IOP has no work to perform. This count is used with the idle loop time. | PD (11,0) |
| LIIDLT | Idle loop time (times 0.01 microsecond) (see notes): The time (in hundredths of microseconds) to run the idle loop once. | PD (11,0) |
Notes: The
idle loop count and time are used to calculate the communications
IOP utilization as follows:
- Convert the product of the idle loop count times the idle loop
time from hundredths of microseconds to seconds. Subtract this from
the interval time, and divide the results by the interval time. For
example:
IOP utilization = (INTSEC - (CIIDLC * CIIDLT)/10**8) / INTSEC
- The performance monitor reports I/O processor (IOP) statistics different beginning with Version 3 Release 7. Therefore, performance statistics for IOPs introduced in Version 3 Release 7 or later releases are reported in the QAPMMIOP file. Performance statistics are reported in the QAPMMIOP file even if the IOP supports only one of the three IOP functions (communications, disk, or local workstation). Performance statistics for IOPs that were introduced before Version 3 Release 7 will continue to be reported in the appropriate IOP file (QAPMCIOP, QAPMDIOP, QAPMLIOP, and QAPMMIOP).