Computer Organisation and Architecture - Vol 3 | 14. Page Faults by Abraham | Learn Smarter
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14. Page Faults

This chapter examines the intricacies of page faults and the functioning of memory hierarchies in computer architecture. It explores the mechanisms behind page fault handling, including the processes involved in mapping virtual addresses to physical memory. Additionally, it discusses the roles of translation lookaside buffers (TLBs) and cache systems in enhancing memory access speeds while managing physical and virtual memory interactions.

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Sections

  • 14.1

    Page Faults

    This section delves into the mechanism and handling of page faults in computer memory management, detailing how the operating system resolves them.

    Learning Practice

  • 14.1.1

    Understanding Page Faults

    This section explains the concept of page faults in virtual memory systems and the operations that occur when a page fault occurs.

    Learning Practice

  • 14.1.2

    Operating System's Response To Page Faults

    This section discusses the process and implications of page faults in operating systems, including how they are handled and what occurs during these situations.

    Learning Practice

  • 14.1.3

    Updating Page Table After Page Faults

    This section explains the process of handling page faults in virtual memory systems, including how the operating system updates the page table and manages memory.

    Learning Practice

  • 14.1.4

    Restarting Instructions After Page Fault

    This section explores the process that occurs when a page fault happens, including how the operating system handles it by retrieving the necessary data from secondary memory.

    Learning Practice

  • 14.2

    Architecture Example: Intrinsity Fastmath

    This section explores page faults and the interaction between virtual and physical memory in the Intrinsity FastMATH architecture.

    Learning Practice

  • 14.2.1

    Tlb Characteristics

    This section discusses the characteristics and functionalities of translation lookaside buffers (TLBs), including page faults and memory management.

    Learning Practice

  • 14.2.2

    Cache Access And Structure

    This section explores the mechanisms behind page faults and the caching process in virtual memory systems.

    Learning Practice

  • 14.2.3

    Handling Tlb Misses

    This section discusses the handling of TLB misses in the context of virtual memory and page faults.

    Learning Practice

  • 14.2.4

    Cycles For Tlb Misses

    This section explores the handling of TLB misses in the context of page faults and memory access cycles, emphasizing the processes within the operating system.

    Learning Practice

  • 14.3

    Memory Hierarchy

    This section discusses the concept of memory hierarchy in computer architecture, focusing on page faults, their handling, and the operations of the Translation Lookaside Buffer (TLB).

    Learning Practice

  • 14.3.1

    Types Of Hits And Misses

    The section discusses the occurrence of page faults and the types of hits and misses in a memory hierarchy.

    Learning Practice

  • 14.3.2

    Combinations Of Events

    This section elaborates on page faults, distinguishing between valid and invalid references, and describes how the operating system responds during such faults.

    Learning Practice

  • 14.3.3

    Possible And Impossible Cases

    This section explores page faults, defining valid and invalid references, and the system's response when the required data isn't in memory.

    Learning Practice

  • 14.4

    Instruction Timing With Page Faults

    This section discusses the concept of page faults, their handling by the operating system, and the timing impact they have on instruction processing.

    Learning Practice

  • 14.4.1

    Effective Instruction Time Calculation

    This section discusses the mechanism of page faults in memory management and how to calculate effective instruction time.

    Learning Practice

References

31 part b.pdf

Class Notes

Memorization

What we have learnt

  • Page faults occur when the ...
  • TLBs play a crucial role in...
  • The architecture incorporat...

Final Test

Revision Tests