IBM Tivoli Composite Application Manager for Application Diagnostics, Version 7.1.0.1

Thread Pools attributes

The Thread Pools attribute group provides information about the data source, as well as connection statistics, for database connection pools in a WAS. Use it to monitor pools activity and to spot potential throttling.

The attributes within this group are used to build the Pool Analysis and Thread Pools workspaces.

For information about WebSphere PMI metrics, see WebSphere PMI Attribute Mapping.

Application ID

Indicates J2EE application ID.

Average Active Threads

The average number of concurrently active threads during the sampling interval. Format is decimal (formatted to 3 decimal places). This value is an average of several values collected over an interval. The interval can be either between this time and the previous time you activated this workspace, or fixed (normally 60 seconds), depending on the configuration of the monitoring agent.

Average Free Threads

The average number of free threads in the pool. Format is decimal (formatted to 3 decimal places). This value is an average of several values collected over an interval. The interval can be either between this time and the previous time you activated this workspace, or fixed (normally 60 seconds), depending on the configuration of the monitoring agent.

Average Pool Size

The average number of threads in the pool. Format is decimal (formatted to 3 decimal places). This value is an average of several values collected over an interval. The interval can be either between this time and the previous time you activated this workspace, or fixed (normally 60 seconds), depending on the configuration of the monitoring agent.

This value may exceed Maximum Pool Size in certain configurations where the pool is enabled to grow beyond the specified maximum size.

Instrumentation Level

The instrumentation level for the thread pools. For WebSphere 6 or higher, the valid values are None, Basic, Extended, All, Custom. Blank if no instrumentation level is set.

Interval (sec)

The length (in seconds) of the sampling interval. Format is positive integer.

Maximum Pool Size

The configured maximum number of threads allowed in the pool. Format is positive integer.

Node Name

The name of the system on which the server is running. Alphanumeric string.

Origin Node

The name of the server subnode. Alphanumeric string.

Percent of Time Pool at Max

The average percentage of time that all threads were in use during the sampling interval. Format is decimal (formatted to 3 decimal places). This value is an average of several values collected over an interval. The interval can be either between this time and the previous time you activated this workspace, or fixed (normally 60 seconds), depending on the configuration of the monitoring agent.

Percent Used Bad

The bad percent of pool usage by application. Format is positive integer.

Percent Used Fair

The fair percent of pool usage by application. Format is positive integer.

Percent Used Good

The good percent of pool usage by application. Format is positive integer.

Sample Date and Time

The date and time the Tivoli Enterprise Management Agent collected the data. The valid format is a 12-character timestamp. For the STR and SCAN functions, the format is MM/DD/YY HH:MM:SS; the following table shows the values contained in this character string:


Format of the 12-character timestamp

Character String Meaning
MM Month
DD Day
YY Year
HH Hour
MM Minute
SS Second

Example: 09/13/06 18:32:03 indicates the data was collected on September 13, 2006, at 18:32:03.

This attribute was designed for logging and reporting data-collection times rather than for creating situations. To specify a time and date for comparison and testing, use attributes from the Universal Time or Local Time groups.

Server Name

The name of the WebSphere application server. Alphanumeric string.

Set Instrumentation Level

Type

Indicates the WebSphere resource category, which is used by the agent to modify the Instrumentation Level for transaction data collection.

Summary of Thread Pools

Whether this row is a summary row of statistical totals collected for all thread pools. The valid values are No and Yes.

Thread Creation Rate

(per sec)

The rate (per second) at which threads were created during the sampling interval. Format is decimal (formatted to 3 decimal places).

Thread Destruction Rate

(per sec)

The rate (per second) at which threads were destroyed during the sampling interval. Format is decimal (formatted to 3 decimal places).

Thread Pool Name

The name of the thread pool. Alphanumeric string.

Threads Created

The number of threads created during the sampling interval. Format is positive integer.

Threads Destroyed

The number of threads destroyed during the sampling interval. Format is positive integer.

Additional information:


Parent topic:

Attributes for ITCAM Agent for WebSphere Applications