OVNPM 1.5.2 - Performance Agent for NonStop Server Monitoring Guide

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2 OVNPM Monitoring Configuration
2-1 OVNPM Collect and Database Parameters
Installation process defines default values for collect and database parameters. This topic provides information
for configuring these parameters after installation. This information is optional and is provided for advanced
users. In this topic, configuration means OVNPM monitoring configuration. Most of these tasks can be performed
using the VCONF utility.
For details, refer Appendix B: VCONF Utility.
2-1-1 Collection Parameters
The DCPRM edit file in the OVNPM configuration subvolume defines the collection parameters. The default values
for these parameters are set during installation. After you gain experience with the product, you can edit this file
and modify some collection parameters. Some of the important parameters are:
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 seconds collect interval.
TopFilesFlag
The value 1 is the default value. In this mode, OVNPM verifies the most frequently accessed files
TopFilesInterval
The interval used to measure physical I/O made on diskfiles. This interval is expressed in minutes and
can take the values 1, 2, 4, 8, 16 or 32 minutes.
The default value is 2 minute.
CollectInterval defines the time in second to make collect. After each CollectInterval the system wakes up the
Basic Collector. They complete/initiate their measurements and send the collect data to the Collect Manager.
According to experiences 30 second collect interval is the best cpu-cost ratio.
By default, the TopFileFlag is on. This is a Navigator option and shows the busiest file in term of number IO. The
TopFile feature has a high CPU cost. If you do not want to monitor the file activity, turn off this feature.
For details on the various DCPRM parameters refer to Appendix D: DCPRM file.
2-1-1-1 SV_DCPRM_SET command
Memory requirement for Sockets, TCP/IP, and XP Disc array monitoring can be difficult to evaluate. For that
reason, the macro SV_DCPRM_SET can be used to set the following DCPRM parameters.
• cmMemSz
• bcMemSz
• ttpMaxNb
• ttpSckMaxNb
SV_DCPRM_SET macro sets the minimum requirements for current system activity and configuration. The
changes made through SV_DCPRM_SET require OVNPM to be stopped and re-started.
NOTE:
The
SV_DCPRM_SET
macro will be executed while installing or upgrading OVNPM.
Operator should use that macro when system is updated. For example:
• A XP disc array is attached and configured for use or it is removed from the system.
• A TCP/IP transport provider is added.
NOTE:
For optimum TCP/IP monitoring, SV_DCPRM_SET should be used during system peak activity.