| 摘要 |
<p>PROBLEM TO BE SOLVED: To appropriately control the operating frequency of a processor. SOLUTION: A timing detecting part 22 detects task switching timing, the performance start/end timing of interrupt processing and timing when a predetermined time Tmon elapses. A load quantity detecting part 20 performs processing for detecting the load quantity of the processor by accumulating the count value (tick value) of a tick counter when the timing detecting part 22 detects the task switching timing and the performance start/end timing of the interrupt processing. A frequency switching controlling part 21 performs processing for automatically switching operation frequencies in accordance with the use situation of the processor when the timing detecting part 22 detects that the predetermined time Tmon has elapsed by a performance monitor timer 30.</p> |
