Page Replacement – FIFO (First In, First Out)
	• Easy to implement • When page in, place page id on end of list • Evict page at head of list • Page to be evicted has been in memory the longest time, but … • Maybe it is being used, very active even • We just don’t know • A weird phenomenon:– Belady’s Anomaly (§4.5.1) • fault rate may increase when there is more physical memory! • FIFO is rarely used in practice