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(Created page with "{{DISPLAYTITLE:Online (Page Replacements)}} == Description == When page fault occurs during the program execution, operating systems use page replacement algorithms to select a victim page from primary memory and makes room for the required page. == Related Problems == Related: Offline == Parameters == No parameters found. == Table of Algorithms == {| class="wikitable sortable" style="text-align:center;" width="100%" ! Name !! Year !! Time !! Space !! Ap...") |
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== Time Complexity | == Time Complexity Graph == | ||
[[File:Page Replacements - Online - Time.png|1000px]] | [[File:Page Replacements - Online - Time.png|1000px]] | ||
== Space Complexity | == Space Complexity Graph == | ||
[[File:Page Replacements - Online - Space.png|1000px]] | [[File:Page Replacements - Online - Space.png|1000px]] | ||
== Pareto | == Pareto Frontier Improvements Graph == | ||
[[File:Page Replacements - Online - Pareto Frontier.png|1000px]] | [[File:Page Replacements - Online - Pareto Frontier.png|1000px]] | ||
Revision as of 14:05, 15 February 2023
Description
When page fault occurs during the program execution, operating systems use page replacement algorithms to select a victim page from primary memory and makes room for the required page.
Related Problems
Related: Offline
Parameters
No parameters found.
Table of Algorithms
| Name | Year | Time | Space | Approximation Factor | Model | Reference |
|---|---|---|---|---|---|---|
| Not recently used | 1940 | $O(nk)$? | $O(k)$ | Exact | Deterministic | |
| First-in, first-out | 1940 | $O(nk)$? | $O(k)$ | Exact | Deterministic | |
| Second-chance | 1940 | $O(nk)$? | $O(k)$ | Exact | Deterministic | |
| Clock | 1940 | $O(nk)$? | $O(k)$ | Exact | Deterministic | |
| Least recently used | 1940 | $O(nk)$? | $O(k)$ | Exact | Deterministic | |
| Random | 1940 | $O(n)$ | $O(k)$? | Exact | Randomized | |
| Not frequently used (NFU) | 1940 | $O(nk)$? | $O(k)$ | Exact | Deterministic | |
| Aging | 1940 | $O(nk)$? | $O(k)$ | Exact | Deterministic | |
| Longest distance first (LDF) page replacement algorithm | 2017 | $O(nk)$? | $O(k)$ | Exact | Deterministic | Time |
Time Complexity Graph
Space Complexity Graph
Pareto Frontier Improvements Graph
