WAS v8.5 > Reference > SetsPerformance Monitoring Infrastructure settings page
Use this page to specify settings for performance monitoring, including enabling performance monitoring, selecting the Performance Monitoring Infrastructure (PMI) module and setting monitoring levels.
To view this dmgr console page, click Servers > Server Types > WebSphere application servers > server_name > Performance Monitoring Infrastructure (PMI).
Enable PMI
Whether the application server attempts to enable PMI. If an application server is started when the PMI is disabled, we have to restart the server in order to enable it.
Use sequential counter updates
Whether access to PMI counters (for example, updates to the counters) is sequential. There is some performance overhead associated with enabling sequential update. The default setting is false.
Persist my changes
Whether changes to the runtime are also persisted for use on subsequent server startups, and not just the current server runtime. The default setting is false.
Selecting the Persist my changes option ensures the counter settings are retained after you restart the server.
- Do not select this option until after we have made all of the changes that need to be persisted. After you select this option, click Apply and Save.
- This option does not remain selected. If we use the dmgr console to make additional changes to the counter settings, and you want these changes retained when we restart the server, you must reselect this option.
gotcha
Currently monitored statistic set
Specifies a pre-defined set of Performance Monitoring Infrastructure (PMI) statistics for all components in the server.
As part of fine-grained control feature, WebSphere Application Server provides new statistic sets, which are pre-defined, fixed server-side sets based on the PMI statistic usage scenarios. This enhancement allows a set of statistics to be enabled via a single action or call. The following statistic sets are defined:
- None
- All statistics are disabled.
- Basic
- Provides basic monitoring for application server resources and applications. This includes J2EE components, HTTP session information, CPU usage information, and the top 36 statistics. This is the default setting.
- Extended
- Provides extended monitoring, including the basic level of monitoring plus workload monitor, performance advisor, and Tivoli resource models. Extended provides key statistics from frequently used WAS components.
- All
- Enables all statistics.
- Custom
- Provides fine-grained control with the ability to enable and disable individual statistics.
Related
Monitoring overall system health
Enable PMI
Related information:
Custom monitoring level