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Foglight for Java EE Technologies 5.9.13 - Administration and Configuration Guide

Advanced settings

Use the Advanced tab of the Configuration Category Editor for the Nexus recording settings to configure several additional collection settings.

Collector Discovery Interval

The interval at which periodic metric collectors discover changes to the application server structure such as new applications, in seconds.

The default is: CollectorDiscoveryInterval = 300;

Time Slice Size

The unit size in seconds. Only used with the max samples per time slice setting in the periodic metric collector configuration files.

The default is: TimeSliceSize = 300;

Max Separation Value Size

The maximum size of request parameters that are read for separating requests.

The default is: MaxSeparationValueSize = 32;

Max Trace Value Size

The maximum value size for collected single trace parameter details. For more information, see Setting maximum display of characters for single trace parameters values.

Trace Parameter Exclusions

The exclusion list for request parameters that are considered sensitive and therefore should be ignored when collecting request traces.

This list may contain strings or regular expressions. The default values include regular expressions for name, address, password, and other common sensitive parameters.

Incomplete Request Timeout

The incomplete request timeout, in seconds.

The default is: IncompleteRequestTimeout = 120;

Live Object Count Limit

The number of live objects that agents can track. For more information, see Setting memory usage for object tracking.

Live Object Lifespan Limit

The maximum amount of time an agent tracks live objects. For more information, see Setting memory usage for object tracking.

Setting maximum display of characters for single trace parameters values

Sets the maximum value size for collected single trace parameters details. Some parameters may contain a lot of information, and in some cases, not all the information may be useful to view. You can reduce the amount of information displayed in the value field.

CAUTION: The higher the MaxTraceValueSize value, the more information saved to the database, and the higher the impact on performance overhead.

The default setting is: MaxTraceValueSize = 128.

To collect single trace parameter details, enable the Collect All Parameters option in the Application Servers Monitor > Requests view > Action column > Collect Traces dialog box.

For more information, see the Monitoring Requests section in the Foglight for Application Servers User Guide.

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Setting memory usage for object tracking

Sets the maximum amount of time an agent tracks live objects. Changing this value to a higher value allows more time to track and therefore, provides a better opportunity to identify true leaks in your environment.

CAUTION: The higher the LiveObjectLifespanLimit value, the more memory used and the higher the impact on performance overhead.

The default setting is:

In addition to the LiveObjectLifespanLimit, you can also limit the number of live objects that agents can track. Increasing this value allows the agent to track more live objects concurrently, but uses more memory in the application server process. Decreasing this value makes it more likely that the agent will expire the live object before it is collected, but uses less memory.

The default setting is:

Configuring APM URL transformation

Foglight for Java EE Technologies and Foglight for Microsoft .NET can transform Java or .NET transaction URLs for use with the Foglight APM Transactions dashboard. The APM URL Transformation options control the following:

Prerequisites:

1
On the navigation panel, under Dashboards, click Application Servers > Administration.
3
On the Nexuses view, click the Recording Settings tab.
4
TIP: If you are uncertain about how to configure these rules, click Example of default URL transformation to open a default example.
7
Adjust the number of transactions created from transformed requests for each collection by typing a value in the Maximum number of transactions created from transformed requests per collection box.
8
Click Save.
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