The Performance Manager execution server can be run as both a Windows system service and as a Windows process.
By default, Performance Manager launches an execution server as Windows system service. Do not change this default setting without good reason. For the work with Silk Test the execution server has to run in process mode.
While a Windows process is launched with the credentials of the currently logged in user, a system service is launched with the local system account, by default the Windows system account. A system service remains active even after the user logs off; thus the Performance Manager execution server is available until the computer is turned off completely.
To execute and monitor Silk Test Classic, Citrix, and SAP scripts you must launch the Performance Manager execution server as a Windows process, with valid user credentials.