1. A method for scheduling tasks in an electronic device, the method comprising: assigning, by a scheduler, a task to one of first processing units functionally connected to the electronic device; measuring, by a load measurement module, a task load of the task by using a scaling factor based on a Dhrystone million instructions per second (DMIPS) value; and controlling, by the scheduler, migration of the task to one of second processing units based on the task load of the task, wherein the measuring of the task load of the task comprises: identifying, by the load measurement module, a type and a current frequency of a core to which the task is assigned, and obtaining, by the load measurement module, a DMIPS-based scaling factor based on the type of the core and the current frequency of the core, and wherein the obtaining of the DMIPS-based scaling factor comprises: obtaining, by the load measurement module, a current DMIPS value corresponding to the type of the core and the current frequency of the core by referring to a DMIPS database, and obtaining, by the load measurement module, the DMIPS-based scaling factor by dividing the current DMIPS value by a maximum DMIPS value stored in the DMIPS database.