公开(公告)号：US20060129780A1

公开(公告)日：2006-06-15

申请号：US11011243

申请日：2004-12-14

申请人： Andrew Dunshea ,  Jos Aecapadi ,  Catherine Nunez

发明人： Andrew Dunshea ,  Jos Aecapadi ,  Catherine Nunez

IPC分类号： G06F12/00

CPC分类号： G06F12/1009 ,  Y10S707/99953 ,  Y10S707/99957

摘要： A method, system, and program for managing memory page requests in a multi-processor data processing system determines a threshold value of available memory, and dynamically adjusts an allocation time to fulfill a page request if the available memory is below a threshold value. The allocation time to fulfill the page request is based upon a percentage of available memory pages once a page stealer commences a scan for pages. An allocation wait time is inversely proportionally adjusted depending upon the percentage of available memory. The allocation wait time has a duration that increases in time as the percentage of available memory decreases and decreases in time as the percentage of available memory increases. More specifically, an average time per page to allocate a page including a scan time for the scan in computing the average time is determined. Then a tunable value is applied to the average time to determine a wait time. In a preferred embodiment, user defined values are received that would control the allocation wait time before fulfilling a page request.