1. An allocator Select 2. An allocator Select] 3. An allocator Select 4. An allocator Select 5. An allocator Select) move allocated blocks to the end of the heap to maximize throughput. pad a heap block to meet memory alignment requirements. handle heap requests in an arbitrary order by reordering them to improve heap memory utilization use the uninitialized data segment to satisfy heap requests if needed. create larger free blocks by coalescing adjacent free blocks when needed