Pool Analysis workspace

This workspace helps you detect resource constraints and potential performance congestion.

This workspace displays information about the usage of several types of pools associated with each application server, including web container pools, ORB pools, J2C connection pools, and database connection pools.

Important:
  • This workspace reports zeros for resource data on the first invocation if PMI data collection is configured for on-demand sampling (that is, if your site set configuration value Resource Data Collection Method to On Demand) or if you have not yet run applications that generate PMI resource data. To report resource data in this workspace after installing and configuring the data collector, use the WebSphere® administrative console to set the appropriate PMI instrumentation level.
  • Because of high processor usage, the monitoring agent provides on-demand sampling by default. To activate PMI monitoring, you must first select this workspace and then select it again later. Each time you select the workspace, it displays the data collected during the interval between selections.
The predefined workspace contains the following items:
  • Web Container Pool Usage - History graph, which shows the configured maximum number of web container pooled threads and the average active threads in the web container pool

    This view displays data provided by the Thread Pools attributes.

  • ORB Pool Usage - History graph, which shows the configured maximum number of ORB pooled threads and the average active threads in the ORB pool

    This view displays data provided by the Thread Pools attributes.

  • Web Container Pool % at Max - History bar chart, which shows the maximum usage percentage for the web container pooled threads over time

    This view displays data provided by the Thread Pools attributes.

  • ORB Pool % at Max - History bar chart, which shows the maximum usage percentage for the ORB pooled threads over time

    This view displays data provided by the Thread Pools attributes.

  • Percent CPU Used - History graph, which shows the percentage of the CPU used over time

    This view displays data provided by the Application Server attributes.

  • DB Connection % at Max - Current Interval bar chart, which shows the maximum usage percentage for a database connection pool over time

    This view displays data provided by the DB Connection Pools attributes.

  • J2C Connection % at Max - Current Interval bar chart, which shows the maximum usage percentage for a J2C connection pool over time

    This view displays data provided by the J2C Connection Pools attributes.

Accessing the Pool Analysis workspace

To access this workspace, complete the following steps:

  1. Within the Navigator, expand Windows Systems, Linux® Systems, z/OS® Systems, or UNIX Systems, as appropriate for the node you are monitoring.
  2. Within the node list, expand the entry that corresponds to the node that you want to select.
  3. Within that node list of monitored applications, expand the list of WebSphere agents.
  4. Within the list of available agents, expand the WebSphere Application Server of your choice.
  5. Within that server list of available WebSphere Application Server server workspaces, click the Pool Analysis entry.