Measure Reference Manual

This counter is valid and displayed by MEASCOM in ZMS style when the CPU subsystem version
(ZMSCPU.HDR.SUBSYSTEM-VERSION), supplied by NonStop OS, is three or greater; otherwise
the counter contains a zero value and is not displayed by MEASCOM.
Counter type: Snapshot.
MM-PAGE-SCANS
(ZMS Style only) Number of memory page scans initiated by the memory manager to perform
memory clean-up that was not caused by memory demand. The memory manager periodically
scans memory for removable pages in the background. This activity does not indicate a performance
problem. See also PAGE-SCANS (page 169).
Counter type: Incrementing.
NATIVE-BUSY-TIME
(ZMS Style only) Amount of time the processor was busy executing native code.
See Usage Notes for H-Series and J-Series CPU Entities (page 177).
Counter type: Busy.
PAGE-REQUESTS
Number of times the memory manager was invoked to obtain a page frame. (In the PEEK utility,
this value is called CLOCK:CALLS.)
Counter type: Incrementing.
PAGE-SCANS
Number of page frames the memory manager examined to obtain a replaceable page. (The PEEK
utility provides a SCANS/CALLS value that shows the average number of frames examined to find
a replaceable page.)
Counter type: Incrementing.
PROCESS-OVHD
Time spent by the operating system initializing and terminating processes. The PROCESS-OVHD
value is a subset of the overall CPU-BUSY-TIME for the CPU entity. The PROCESS-OVHD value is
not included in the CPU-BUSY-TIME count for the PROCESS entity. This counter measures the cost
incurred by the operating system in creating (process control data structures setup, memory
initialization, fixup, and so on) and terminating (memory and data structure cleanup) a process
and does not include the time spent by the process doing its own work.
Counter type: Busy.
PROCESSH-SAMPLES
(ZMS Style only) This counter is valid only for H-series, J-series, and later RVUs. It reports the raw
count of the number of PROCESSH samples in the processor if a PROCESSH measurement is active.
If no PROCESSH measurement is active, this counter is not displayed, and its value in the record
is zero. For details on how to increase the sampling rate of PROCESSH samples, see the Usage
Notes for H-Series and J-Series PROCESSH Entities (page 321).
For NSMA systems in Measure J01 and later PVUs, PROCESSH-SAMPLES reports the aggregate
value of all the number of samples on all the IPUs and hence is typically equal to n*sampling
frequency on that CPU.
Counter type: Sampling.
CPU 169