DISTIM
In each sampling interval, the disabled time sampler queues a TQE containing:
- TQEVAL—time that the interrupt should take place
- TQEXIT—address of the exit
If an interrupted CPU runs disabled, the interrupt is stacked in the hardware until the running process enables itself. The exit performs a STCK to get the time that the routine actually did take control. The exit then calculates and records the difference as disabled time delay. If the delay falls inside specified limits, the ASID of the last address space in control is recorded as well.
Monitoring modes | One DISTIM statement can be specified for each monitoring mode, continuous (CPM) or intermittent (IPM). | |
Sampler and record types | The DISTIM statement controls the DITS sampler, which produces a CMF type 240-24 record. | |
Analyzer statements and reports | none | |
Other BMC Software products | The DISTIM control statement is used by the BMC AMI Ops Monitor for CMF Extractor only. | |
Parameters
The parameters for the DISTIM control statement are:
SPINOFF= | specifies the SYSOUT class to be dynamically allocated for printing the Disabled Delay Report Any valid SYSOUT class can be specified. The default is A. The SPINOFF=NO parameter eliminates the Disabled Delay Report. |
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COPIES= | specifies the number of copies of the Disabled Delay Report to be printed Up to 99 copies can be specified. The default is 1. This parameter is meaningful only if the SPINOFF parameter is defined with a valid SYSOUT class. |
SAMPLE= | specifies the number of milliseconds between data gathering cycles; the default is 157 You should avoid specifying a sampling interval that is a divisor of an interval that is used by a different control statement. Because 1000, 1500, and 5000 are default sampling intervals for various control statements, you should avoid specifying a sampling interval that contains 0 as its final digit. |
LODELAY= | specifies the lower limit of the range of delay time for which ASID counts are desired LODELAY must be below HIDELAY for the ASID count to be maintained. The default is 0. |
HIDELAY= | specifies the upper limit of the range of delay times for which ASID counts are desired; the default is 0 |
SHIFT= | specifies the lower value of delay which is to appear on the graphical output It is the amount by which the graph is shifted to make the relevant portions fit on the page. The default is 0. The maximum is 380. |
Example
The CMF Extractor produces one copy of a spin-off report in SYSOUT class R for each recording interval, sampling every 293 milliseconds. The report indicates which address spaces were last dispatched for any delay in the range of 30 to 60 microseconds.