Thread Pools workspace

This workspace reports information about the various thread pools that support the applications running in your Java™ virtual machine (JVM).

This workspace displays data provided by the Thread Pools attributes.

Notes:
  • This workspace reports blanks 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 overhead, 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:
  • Highest Average Pool Sizes bar chart, which shows the largest thread pools in the JVM
  • Average Thread Pool Usage bar chart, which shows the average active and free threads for each thread pool
  • Thread Pools report, which shows information about the usage statistics for thread pools that belong to a WebSphere Application Server, such as average and maximum pool sizes and creation and destruction rates

Accessing the Thread Pools 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 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 workspaces, click the Thread Pools entry.

Accessing the Managing Server Visualization Engine from the Thread Pools workspace

In The Tivoli Enterprise Portal access the Thread Pools workspace. You can use the Diagnostic Server Activity Display link to access the Managing Server Visualization Engine.
  1. In the Thread Pools window, right-click the choose link icon Choose link icon then click Diagnostic JVM Thread Display.
  2. If this is your first time to access the Managing Server Visualization Engine during a session, you see a Welcome to the Application Monitor page.
  3. Depending on the user setup configuration in your environment you may or may not have to type your Managing Server Visualization Engine User Name and Password. If you do, you only need to log in using your User Name and Password once per session.
  4. Click OK to display the Diagnostic JVM Thread Display page in the Managing Server Visualization engine. You can use link to diagnose application problems, for example, slow transactions or high response times.
  5. The results relate directly to the context from where you launched the link in the Tivoli Enterprise Portal. For more information about using the Diagnostic JVM Thread Display page and additional features, refer to the Composite Application Manager help within the Managing Server Visualization Engine Interface.
  6. To return to the previous workspace in the Tivoli Enterprise Portal interface at any time choose from the following options:
    • From the Tivoli Enterprise Portal desktop client, click the back arrow on your web browser.
    • From the Tivoli Enterprise Portal browser client, click the browser back arrow.