MULTI-CORE PROCESSOR SYSTEM, ARBITRATION CIRCUIT CONTROL METHOD, AND ARBITRATION CIRCUIT CONTROL PROGRAM

摘要

CPUs (S#1 - L#2) use an acquisition unit (304) to acquire an actual access speed value of each CPU to shared memory (203). Then, the CPUs (S#1 - L#2) use a response performance calculation unit (305) to calculate the CPU response performance of each CPU from the actual access speed value and a theoretical access speed value for the CPU. A CPU (L#3) uses an access ratio calculation unit (310) to calculate a shared memory (203) accessibility ratio for the plurality of CPUs so that the accessibility ratio of particular CPUs is higher than the accessibility ratio of CPUs having a higher response performance than the particular CPUs. The CPU (L#3) uses a notification unit (311) to notify an arbitration circuit (204) of the calculated accessibility ratio.