M.M. Zolotarev, M.A. Lifanov, V.E. Farber, M.V. Eisymont

In the conditions of the difficult radar-tracking situation caused by need of detection and attending of a large number of radar-tracking objects, one of the major tasks, along with radar-tracking information processing, the task of control of radar working and input information flow is. In a number of works the input flow information regulating system on CPU idle time in radar computer is considered. For implementation of such regulating system it is necessary to have the current information about CPU idle time. Specific implementation of the method, which evaluates CPU idle time, depends on hardware architecture and program interfaces of the computer (an operating system, system libraries). In this work valuation methods of CPU idle time (including their implementation and characteristics) in radar-tracking information processing systems under control of Linux OS are analyzed. It is shown that in real systems taking into account the requirement of portability often shown to software products, for an evaluation of CPU idle time it is more preferable to use a computing method. Thus the system-dependent valuation method of CPU idle time can be used for checking and calibration of a computing method.