Multi-core processor system, electrical power control method, and computer product for migrating process from one core to another

Abstract

A multi-core processor system includes a core configured to detect that among cores different from a specific core executing a specific process, a given software different from specific software having a function equivalent to the specific process, is under execution; extract, from a database storing required computing capacities for the plural software and upon detecting that a given software is under execution, requirement values indicating the required computing capacity of the specific software and of the given software; judge for each the cores, whether a sum of the required computing capacities of the specific software and the software is at most a computing capacity value of the core; assign the specific software to a core for which the sum of the required computing capacities is judged to be at most the computing capacity value of the core; and suspend the specific core, upon assigning the specific software to the core.

What is claimed is: 
     
         1 . A multi-core processor system comprising:
 a first core;   a second core that has processing capacity different from that of the first core; and   a storage unit that stores therein a first task and a second task each of which is processed by the first core or the second core, wherein the first core is configured to:   execute the first task;   cause the second core to execute the second task; and   cause the first core to execute the second task that is being executed by the second core and suspend the second core, when surplus processing capacity of the first core that is executing the first task is greater than or equal to processing capacity required for the first core to execute the second task.   
     
     
         2 . A control method for a multi-core processor system that includes:
 a first core;   a second core that has processing capacity different from that of the first core; and   a storage unit that stores therein a first task and a second task each of which is processed by the first core or the second core, wherein control method causes the multi-core processor system to:   execute the first task by the first core;   execute the second task by the second core; and   execute by the first core, the second task that is being executed by the second core and suspend the second core, when surplus processing capacity of the first core that is executing the first task is greater than or equal to processing capacity required for the first core to execute the second task.