Memory Allocation – Mechanism
	• MM system maintains data about free and allocated memory alternatives – Bit maps  - 1 bit per “allocation unit” – Linked Lists  - free list updated and coalesced when not allocated to a process • At swap-in or process create – Find free memory that is large enough to hold the process – Allocate part (or all) of memory to process and mark remainder as free • Compaction – Moving things around so that holes can be consolidated – Expensive in OS time