heap_set_increment 3499 gc.c           	heap_set_increment(objspace, 1);
heap_set_increment 5433 gc.c           		heap_set_increment(objspace, heap_extend_pages(objspace, sweep_slots, total_slots));
heap_set_increment 5461 gc.c           	    heap_set_increment(objspace, heap_extend_pages(objspace, sweep_slot, total_slot));
heap_set_increment 6167 gc.c           	    heap_set_increment(objspace, 1);