In article questions of modeling of priority management by formation of information streams in information systems with the centralized source of data with use of the mechanism of sockets are considered. This question is staticized in connection with necessity of optimum control of information processes in the automated control systems. Management is based on change of priorities of forming processes, depending on ranks of clients. On the basis of an experimental material the analytical dependences establishing the relations of parameters and criteria of management are received.

Keywords: a process priority, a delay of information service, an information stream