The DevTest Agent is installed in a Java application and can be used to capture transaction path and details.
Virtual Services and Baseline test can be created from the captured transactions.
These processes will effect the application but by how much...
What is the DevTest agent's overhead?
How will using the DevTest agent impact my application?
How will I know if my system is overloaded?
All supported DevTest versions.
Because every application and environment is different, it is impossible to predict how the agent will impact a given application.
However if you understand how the agent and broker process data, then it is easier to adjust for the additional load.
Note: Below assumes a default agent without any extension installed.