1. A method of managing memory in a computer system utilizing a page manager including an ager, the page manager being of a type having page tables and page table entries therein for mapping and locating each page of a process, the method comprising the steps of: recording in bit vectors, each of which contain a plurality of bits, a history of accesses made to each page of the process from a plurality of aging cycles, said each page also being mapped and located as a page table enty in a page table by the page manager; and placing representations of a predetermined number of said bit vectors, said predetermined number of said bit vectors being obtained from a least recently used end of an idle list, in a listing arranged into columns corresponding to said plurality of bits from a lowest number of accesses to a highest number of accesses, wherein the ager can access said listing and page out a page of the process having a lowest number of said accesses.