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I/O interlockI/O Interlock – Pages must sometimes be locked into memoryConsider I/O. Pages that are used for copying a file from adevice must be locked from being selected for eviction by a<strong>page</strong> replacement algorithm.
Reason Why Frames Used For I/O Must BeIn Memory
Page 5 and 6:
Virtual-address Space
Page 7 and 8:
Demand PagingBring a page into memo
Page 9 and 10: Valid-Invalid BitWith each page tab
Page 11 and 12: Page Fault If there is a reference
Page 13 and 14: Performance of Demand Paging Page F
Page 15 and 16: Copy-on-WriteCopy-on-Write (COW) al
Page 17 and 18: After Process 1 Modifies Page C
Page 19 and 20: Page ReplacementPrevent over-alloca
Page 21 and 22: Basic Page Replacement1. Find the l
Page 23 and 24: Page Replacement Algorithms Want lo
Page 25 and 26: First-In-First-Out (FIFO) Algorithm
Page 27 and 28: FIFO Illustrating Belady’s Anomal
Page 29 and 30: Optimal Page Replacement
Page 31 and 32: LRU Page Replacement
Page 33 and 34: LRU Approximation AlgorithmsReferen
Page 35 and 36: Enhanced Second-Chance Additional m
Page 37 and 38: Allocation of FramesEach process ne
Page 39 and 40: Priority Allocation Use a proportio
Page 41 and 42: ThrashingIf a process does not have
Page 43 and 44: Demand Paging and Thrashing Why doe
Page 45 and 46: Working-Set Model working-set wind
Page 47 and 48: Page-Fault Frequency SchemeEstablis
Page 49 and 50: Memory-Mapped FilesMemory-mapped fi
Page 51 and 52: Memory Mapped Files
Page 53 and 54: Buddy System Allocator
Page 55 and 56: Slab Allocation
Page 57 and 58: Page Size Page size selection must
Page 59: Program StructureProgram structure
Page 63 and 64: Windows XPUses demand paging with c
Page 65 and 66: SolarisMaintains a list of free pag
Page 67 and 68: Solaris 2 Page Scanner
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