Method and devices for controlling operations of a central processing unit

摘要

Provided is a method in a control circuitry controlling the operations of a central processing unit, CPU. The CPU is associated with a nominal clock frequency. The CPU is further coupled to an I/O range and configured to deliver input to an application. According to the method, the control circuitry controls (110, 150) the CPU to poll the I/O range for input to the application. The control circuitry also monitors (120, 160) whether or not each poll results in input to the application and adjusts (140) a clock frequency at which the CPU operates to a clock frequency lower than the nominal clock frequency if a pre-defined number of polls resulting in no input is detected (130). A control circuitry and a central computer server of an automated exchange system are also provided.

主权项

1. A method for controlling operations of a Central Processing Unit, CPU, associated with a nominal clock frequency, the CPU being coupled to an input/output, I/O, range and configured to deliver input to an application, the method comprising controlling the CPU to poll the I/O range for input to the application, wherein the polling is repeated until a poll results in input to the application, the method characterized by:
monitoring whether or not each poll results in input to the application; and adjusting a clock frequency at which the CPU operates, to a predetermined first clock frequency lower than the nominal clock frequency, if a pre-defined number of polls resulting in no input is detected.