Method and system for dynamically changing page allocator

A system for dynamically changing a page allocator of the present invention determines the condition of the system and the page allocator for releasing or allocating the page corresponding to a memory address in response to a page allocation or release request, and includes a coordinator for determining whether to divide the page allocator into children page allocators by setting the page allocator as a parent page allocator or to combine the divided children page allocators to the parent page allocator according to the determination result.