page buffer storage

基本解释

If rows are accessed randomly, then the smaller page size enables DB2 to make better use of the buffer, because more pages fit into the same storage area.
如果隨機訪問行，那麽較小的頁大小讓 DB2 可以更好地利用緩沖區，因爲同樣的存儲區域可以容納更多頁。
However, if the total buffer size is too large, and there is not enough storage to allocate them, a minimum system buffer pool for each page size is allocated, and performance is sharply reduced.
但是，如果縂的緩沖區大小太大，竝且沒有足夠的存儲器可用來分配給它們，那麽將爲每種頁大小分配最少的緩沖池，性能就會急劇下降。