4.2. General Diagnostics

Locate the appropriate Twiddle script for your environment (twiddle.sh, twiddle.bat or twiddle.jar) in the <JBOSS_HOME>/bin/ directory.

Run the following command:

<TWIDDLE> -u admin -p password get "jboss.web:name=ajp-127.0.0.1-8009,type=ThreadPool"

Use the script appropriate to your operating system and environment .

Twiddle may need to be modified for each specific environment, but the above will work in a default JBoss instance where no ports have been changed and JBoss is starting on the localhost.

Navigate to http://localhost:8080/jmx-console.

Find the jboss.web section.

Click on name=ajp-localhost/127.0.0.1-8009,type=ThreadPool (or whichever AJP ThreadPool matches your environment)

Investigate the currentThreadsBusy attribute. If this attribute is reaching the maxThreads there will be a problem as JBoss Web is reaching the defined ThreadPool capacity.