A distributed processing system includes a client that makes a request for execution of a service requested by a user, a processing element, a control unit connected with the client and the processing element. The control unit has control functions for controlling the distributed processing system, and the client has at least one control function that is same as one of the control functions of the control unit. With respect to at least one control function that both the control unit and the client have, at least one of the control function of the control unit and the control function of the client is selected to execute a control.