Unit OS5: Windows Memory Management

More documents

Recommendations

Info

4Key FeaturesFully reentrant and provides synchronization toPage frame number (PFN) databaseSection objects and working setsPage file creationLazy evaluationSharing – usage of prototype PTEs (page table entries)Extensive usage of copy-on-write...whenever possibleShares memoryCopy-on-writeMapped files
5Main ComponentsSystem services for allocating, deallocating, and managing virtualmemoryAn access fault trap handler for resolving hardware-detected memorymanagement exceptions and making virtual pages resident on behalf of aprocessSix system threadsWorking set manager (priority 16) – drives overall memory managementpolicies, such as working set trimming, aging, and modified page writingProcess/stack swapper (priority 23) -- performs both process and kernelthread stack inswapping and outswappingModified page writer (priority 17) – writes dirty pages on the modified listback to the appropriate paging filesMapped page writer (priority 17) – writes dirty pages from mapped filesto diskDereference segment thread (priority 18) is responsible for cache andpage file growth and shrinkageZero page thread (priority 0) – zeros out pages on the free list
Page 1 and 2: Windows Memory Management (I)Memory
Page 3: 3IntroductionMain Tasks:Translating
Page 7 and 8: 7Large PagesArchitecture Small Page
Page 9 and 10: 9Large PagesDisadvantage of large p
Page 11 and 12: 11Reserving & Committing MemoryOpti
Page 13 and 14: 13Shared MemoryLike most modern OS
Page 15 and 16: 15Viewing DLLs & Memory MappedFiles
Page 17 and 18: 17Controlling DEPBCD nx values:OptI
Page 19 and 20: 19DEP on 32-bit WindowsHardware DEP
Page 21 and 22: 21Copy-On-Write PagesUsed for shari
Page 23 and 24: 23How Copy-On-Write WorksAfterOrig.
Page 25 and 26: 25Virtual Address Space (V.A.S.)Pro
Page 27 and 28: 27Windows User ProcessAddress Space
Page 29 and 30: 29Large Address Space AwareImagesIm
Page 31 and 32: 31Address Windowing Extensions32-bi
Page 33 and 34: 33Working Set ManagementDefault wor
Page 35 and 36: 35Look-Aside ListsAnother fast memo
Page 37 and 38: Heap Manager StructureTwo layers:Co
Page 39 and 40: Physical Memory Limits32-Bit 64-Bit
Page 41 and 42: 41Cache SupportSystem wide cache me
Page 43 and 44: 43Windows API MemoryManagement Arch
Page 45 and 46: 45Source Code ReferencesWindows Res
Page 47: ContentView DLLs using “listdll.e

Unit OS5: Windows Memory Management

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?