Scheduler, multi-core processor system, and scheduling method

A control method of a multi-core processor system that includes a plurality of cores configured to execute a plurality of tasks, respectively, and a plurality of caches configured to store data accessed by the cores when the cores execute the tasks, respectively, wherein a first core of the cores executes a process comprising:

• determining if a priority of a task assigned to any one of the cores is greater than or equal to a given value;
• and
• storing, when the priority of the task is determined to be greater than or equal to the given value, the data into a cache corresponding to the core to which the task is assigned before the core executes the task, and
• assigning, among tasks each of which has a priority greater than or equal to the given value, tasks that access identical data to an identical core of the cores.