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Artwork for The Backend Engineering Show with Hussein Nasser
The Backend Engineering Show with Hussein Nasser · Dec 15, 2025 · 46 min

Page Tables

Page tables provide the mapping between virtual memory and physical memory for each process. This means it needs to be as efficient and as fast as possible. I explore the inner workings of page tables in this episode. 0:00 Intro 2:00 Virtual Memory ⁃ ⁃ 8:00 MMU 10:00 Page Tables ⁃ ⁃ ⁃ ⁃ ⁃ ⁃ ⁃ 11:30 Single Table Byte Addressability ⁃ ⁃ ⁃ ⁃ ⁃ ⁃ ⁃ ⁃ 16:00 Single Table Page addressability ⁃ ⁃ ⁃ ⁃ ⁃ 19:00 Multi-level Paging (Radix tree) ⁃ ⁃ 31:00 Huge Tables ⁃ ⁃ 33:00 TLB ⁃ ⁃ Summary

0:00-46:39
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Page tables provide the mapping between virtual memory and physical memory for each process. This means it needs to be as efficient and as fast as possible. I explore the inner workings of page tables in this episode.


  • 0:00 Intro
  • 2:00 Virtual Memory

⁃ ⁃ 8:00 MMU

  • 10:00 Page Tables

⁃ ⁃ ⁃ ⁃ ⁃ ⁃ ⁃ 11:30 Single Table Byte Addressability  

⁃ ⁃ ⁃ ⁃ ⁃ ⁃ ⁃ ⁃ 16:00 Single Table Page addressability 

⁃ ⁃ ⁃ ⁃ ⁃ 19:00 Multi-level Paging (Radix tree)

⁃ ⁃ 31:00 Huge Tables

⁃ ⁃ 33:00 TLB

⁃ ⁃ Summary


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