| 摘要 |
A computer system is provided with an event counter, a CPU, a memory, an external device, a hub M31 and a hub I33. The computer system is further provided with a clock change module 50. System software 60 and applications 70a to 70m operate, and the clock change module 50 specifies a clock with which the applications 70 are executed. Based on stall cycles read from the event counter 21, the clock change module 50 specifies the clock that maximizes performance or power consumption characteristic while satisfying execution constraint 90.
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