Multicore processor system, computer product, and control method

Abstract

A multicore processor system includes a processor configured to detect any among a switching process and an assignment process of applications in a multicore processor; acquire upon detecting any among the switching process and the assignment process, a priority level concerning execution of each application assigned to each core of the multicore processor and number of accesses of a shared resource shared by the multicore processor; determine an access ratio of an application whose priority level is highest to each of application remaining after excluding the application whose priority level is highest, among the assigned applications, by comparing the number of accesses by each remaining application and the number of accesses by the application whose priority level is highest; notify an arbiter circuit of the determined access ratios; and arbitrate using the arbiter circuit, the access of the shared resource by the multicore processor, based on the access ratios.