Below is a list of versions that are available for the threaddump plugin. To find other plugins, please review this listing of most recent releases of all plugins.

Plugins extend and enhance the functionality of Openfire. To install plugins, copy the .jar file into the plugins directory of your Openfire installation.

Threaddump Plugin Readme

Overview

This plugin serves two primary purposes:

• Allow a thread dump of the Openfire JVM to be copy/pasted from the admin console.
• Enable automatic generation of thread dumps when certain conditions are met.

Installation

Copy threaddump.jar into the plugins directory of your Openfire installation.The plugin will then be automatically deployed. To upgrade to a new version,copy the new threaddump.jar file over the existing file.

Configuration

Once loaded, the plugin will add a page to the Openfire Admin Console, under Server > Server Manager > Thread Dumps. This page can be used to configure the plugin.

Alternatively, the plugin can be configured by using properties, as defined below:

Property	Description
threaddump.task.enable	Enables a task that periodically determines if a thread dump must be created.
threaddump.task.delay	The delay for starting the evaluation task that is observed after applying configuration changes or restarting the plugin.
threaddump.task.interval	The frequency at which to check what evaluators are ready to be executed.
threaddump.task.backoff	After a thread dump is generated, wait this period before allowing a new one to be generated.
threaddump.task.evaluators	A comma-separated list of class names of all evaluators to be used.

The following evaluator classes are available:

• org.igniterealtime.openfire.plugin.threaddump.evaluator.CoreThreadPoolsEvaluator

  An evaluator that periodically checks the activity in the thread pools that power most network-related activity.

  threaddump.evaluator.threadpools.interval	The frequency (in milliseconds) of core network thread pool evaluation.
  threaddump.evaluator.threadpools.busy-percentage-max	The percentage of threads in a pool that can be running at the same time that is considered 'busy'.
  threaddump.evaluator.threadpools.successive-hits	How many successive evaluations must have detected excessive thread pool usage, for a thread dump to be created.

• org.igniterealtime.openfire.plugin.threaddump.evaluator.DatabaseConnectionPoolEvaluator

  An evaluator that periodically checks the amount of active database connections in the pool that manages the total amount of available connections. This evaluator is only available when using the standard database connection provider. It does not support the embedded database.

  threaddump.evaluator.dbpool.interval	The frequency (in milliseconds) of database connection pool evaluation.
  threaddump.evaluator.dbpool.busy-percentage-max	The percentage of connections in the pool that can be running at the same time that is considered 'busy'.
  threaddump.evaluator.dbpool.successive-hits	How many successive evaluations must have detected excessive connection pool usage, for a thread dump to be created.

• org.igniterealtime.openfire.plugin.threaddump.evaluator.DeadlockEvaluator

  An evaluator that periodically checks if a thread deadlock has occurred.

  threaddump.evaluator.deadlock.interval

  The frequence of deadlock detection evaluator.

• org.igniterealtime.openfire.plugin.threaddump.evaluator.TaskEngineEvaluator

  An evaluator that periodically checks the thread pool that is used by Openfire's internal Task Engine.

  threaddump.evaluator.taskengine.interval	The frequency (in milliseconds) of task engine thread pool evaluation.
  threaddump.evaluator.taskengine.successive-hits	How many successive evaluations must have detected excessive thread pool usage, for a thread dump to be created.
  threaddump.evaluator.taskengine.max-threads	The minimum amount of active threads in the pool to trigger a thread dump.
  threaddump.evaluator.taskengine.max-poolsize	The minimum size of the thread pool (including active and inactive threads) to trigger a thread dump.

Attribution

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