Cost (%CPU)
Cost (%CPU) http://www.itpub.net/thread-1040049-1-2.htmlCost (%CPU)200(10)说明预估成本200,其中io cost 180 ,cpu cost 20 ~ 就是这么简单~http://warehouse.itpub.net/post/777/504169[@more@]
注册时间:2008-11-27