Method and apparatus for determining and using program paging ch

Details Method and apparatus for determining and using program paging ch Method and apparatus for determining and using program paging ch

1990-08-31

1993-09-21

Chun, Debra A.

Boots, shoes, and leggings

364DIG1, 364264, 3642641, 3642644, 364280, 3642805, G06F 1134

Patent

active

052476871

ABSTRACT:
Paging data is used to manage address space working set size, system multiprogramming level, and job mix, to improve system productive CPU utilization. System paging characteristics are monitored to determine when to perform management functions. When needed, address space paging data is collected for monitored address spaces, and target working set sizes set for managed address spaces. If necessary, address spaces are "forced" to exhibit characteristic paging patterns. Reallocation of working set pages among active address spaces, and swap in-swap out actions, are assessed, and impacts on productive CPU utilization is estimated.

REFERENCES:
patent: 4047243 (1977-09-01), Dijkstra
patent: 4989134 (1991-01-01), Shaw
Tetzlaff et al, "A Page Swapping Prototype for VM/HPO" pp. 215-230; IBM Systems Journal 26 (1987) #2.
Opderbeck et al., "Performing of the Page Fault Frequency Replacement Algorithm in MP Environment" pp. 235-241 Information Processing 74-Aug. 1974.

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