When the agent is in Constructor Mode, transaction activity is tracked from thread to thread by instrumenting the constructors of Runnable objects, and their run methods, such that the agent can link the creation point of the object with their actual execution. Since in many cases the work executed by Runnable objects does not relate to the Business Transaction context within which they were created, the agent provides for exclude rules to limit which threads are tracked. The agent configuration maintains a default set which you can fine-tune when necessary.