METHOD FOR OPTIMIZING SYSTEM PERFORMANCE BY PROCESSIN TASK AT REAL TIME USING STACK CHANGE ON RTOS

摘要

PURPOSE: A method for optimizing system performance using stack change on the RTOS(Real Time Operating System) is provided to largely improve the system performance by optimizing a system as a stack pointer is reallocated/moved to an embedded SRAM by measuring/analyzing task execution time/frequency of a stack of an external RAM. CONSTITUTION: A task management program stored in a microcomputer continuously detects a stack point changing time of the task. In case of the stack changing time, a sub routine is executed by searching the task of the largest occupation time during program execution. If the task of the largest occupation time is searched, the stack of the task is moved to a reserved area of the embedded SRAM. A task scheduler processes the task by searching the currently executed task under a memory map of the changed stack.