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CommonJ − Tuning

Depending on your applications needs you may want to change the configuarion parameters of a work manager's thread pool. When you define the JNDI Resource (WorkManagerFactory) you can pass configuration values: This example (for Tomcat) defines a WorkManager named MyWorkManager that uses between 5 and 15 concurrent threads: 

<Context ...>
	...
	<Resource name="wm/MyWorkManager" 
		auth="Container"
		type="commonj.work.WorkManager"
		factory="de.myfoo.commonj.work.FooWorkManagerFactory" 
		minThreads="5" />
		maxThreads="15" />
	...
</Context>

The valid attirbutes for the FooWorkManagerFactory are as follows:

AttributeDescription
minThreads The mininum number of threads in the thread pool. Default: 2
maxThreads The maximum number of threads in the thread pool. Default: 10
queueLenght The number of work items that can be queued - 0 means no queuing. Default: 10
maxDaemons The maximum number of daemon threads to allow for this work manager. Default: 10