细心安排，周密筹划，然后等待某一天万无一失的去收获果实？这倒也是一种爱呢。
In this case, AIX scans both classes of pages and evicts the least recently used pages.
The decision to free up a buffer pool slot is based on the least recently used (LRU) principle.
Think of a false access order as the default, where you must pass in a true to have the list in access order; that is, the head of the map is the least recently used map entry.
