| 摘要 |
The object of the present invention is to balance power saving and useability in a computer system. According to a first aspect of the present invention, when predetermined activities of a device in a computer system, each of which occurs within a predetermined period t1 after the previous predetermined activity, succeed for a predetermined period t2 or longer, a substantial frequency of a central processing unit is raised. According to a second aspect of the present invention, a substantial frequency of the CPU is raised after a disk drive has been accessed, and if a predetermined activity performed by a device other than the disk drive occurs within a predetermined period t4 following the raise of the frequency, the substantial frequency of the CPU is lowered when a predetermined period t3, following the predetermined activity, has passed.
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