A computer system to schedule a garbage collection process within a computing environment comprises a memory unit and a hardware computer processor. The memory unit includes a load-monitored region configured to undergo a garbage collection process. The hardware computer processor is configured to perform operations comprising invoking a handler to obtain processing control in response to a request from an application to load a pointer that points to an object located within the load-monitored region, and determining by the handler a priority of the application, and performing a garbage selection process according to one mode among a plurality of different modes based on the priority.