OVNPM 1.5.2 - Performance Agent for NonStop Server Monitoring Guide

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Appendix D
DCPRM File
OVNPM supplies a file named DCPRM that contains parameters to customize and tune OVNPM to match your
needs.
Display
Agent
ShowAllInterval
When set to 0 (default value), the Display Agent shows only the intervals that are saved
to the database. (See Insight retention period).
Data Collection
Parameter
Description
CollectInterval
SystemInsight and SystemReport collections use this parameter. It represents the
collection metrics interval.
The value of this parameter must be 15 or 30 (seconds).
The default value is 30.
We strongly recommend 30 second collect interval.
IoCollectInterval SystemInsight collection for the domain DISKFILE uses this parameter. It represents the
collection interval in minutes.
The value of this parameter must be 1, 2, 4, 8, 16 or 32 (minutes). By increasing or
decreasing this parameter, you have respectively, less or more accuracy, but you also
have less or more overhead.
The default value is 2.
NOTE: This Parameter is no longer used in H-series or G-series running at least Measure
G08.
ReportAccuracy
SystemReport collection uses this parameter. It represents the minimum value threshold
for the metric %CpuDist under which no data is returned.
The minimum value is 1, the maximum value is 100. By increasing or decreasing this
parameter, you will have respectively less or more detail for SystemReport.
The default value is 3
Example: Assume ReportAccuracy value is set to 3. If the current Cpu-Busy.% metric
value is 50% for a specific CPU, SystemReport reports metrics on processes for this CPU
that use approximately more than 3% of Cpu-Busy.%. In this case, it is 1.5%.
When this parameter is increased, SystemReport returns fewer processes which reduces
the collection and then the size of the SystemReport database.
ForceIoCollect
The value 0 is the default value. In this mode, the Basic Collector waits a maximum of 3
seconds. After this delay, if the Measure collection is not finished, it bypasses the diskfile
collection.
The value 1 indicates that the Basic Collectors should force collection. In this mode, the
Basic Collector waits up to 2 minutes before canceling the diskfile collection
ReduceCollectFlag
The value 1 is the default value. In this mode, a Basic Collector enters in
ReduceCollection mode when insufficient resources are allocated to fulfill the collection
in time.
The Basic Collector enters in ReduceCollection mode in the following cases:
• When the BasicCollector is awoken too late by the system.
• The collection takes too long to be fulfilled.
The value 0 indicates that the Basic Collectors should force collection even if the Basic
Collector it is not wake-up in time by the system or even if the Basic Collector take more
time to collect data than the collection interval itself.
MeasExtSz The extent sizes of
measurement files.
The primary and secondary extents have the same size.
The measurement files are located in LOG subvolume.
The default value is 128.
Previous name of this parameter was MeasExt. Even if that name is still supported, it
should not be used any more.