| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce power consumption while securing performance for processing a request, when a node device configuring a redundant system operates as an operation system, and to obtain high power-saving effects, when the node device operates as a stand-by system. <P>SOLUTION: When a self-node device 1 operates as an operation system, a power control means 3 compares a first descent threshold Th1, between first and second descent thresholds Th1 and Th2(Th1<Th2), with the load of the self-node device 1 detected by a load detection means 2, to determine whether to make the frequency of a clock which is to be supplied to a CPU in the self-node device 1 smaller than that in normal state. In contrast, when the self-node device operates as a stand-by status, the power control means compares the second threshold Th2 with the detection result of the load detection means 2, to determine whether to make the frequency of the clock smaller than that in the normal state. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
