| 摘要 |
PROBLEM TO BE SOLVED: To provide a multiprocessor system, for locally and continuously reducing power consumption by reducing bias in processing load, and dispersing external stress, and thereby to continuously secure reliability in system operation for a long period of time. SOLUTION: A state detecting circuit 7 detects a time slot wherein each of a plurality of processors 1_1 to 1_n uses input and output bus 3_1. A usage rate counter 8 counts a usage rate of the input and output bus in processor units within a given period indicated by a reference timing pulse TP, based on a signal indicating a used hour in processor unit detected by the state detecting circuit 7. A processor control circuit compares the usage rates of processors 1_1 to 1_n counted by the usage rate counter 8. The processing is changed from the processor with high usage rate to the processor with low usage rate. COPYRIGHT: (C)2006,JPO&NCIPI
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