ÜBER DIESE EPISODE
Page faults occurs when the process tries to access a memory that isn’t backed by a physical page kernel raises a fault which loads a page. It happens on first access, stack expansion, COW, swap and much more. However it comes with a cost.
In this episode of the backend engineering show I dissect the need and the cost page faults in the kernel.
- 0:00 Intro
- 4:00 Virtual memory
- Abstraction of physical memory
- Memory sharing
- Allow more processes to run , unused go to disk
- Numa, kernel can place memory near the cpu
- 12:00 VMA areas
- Text/code
- Data
- BSS
- Heap
- Stack
- 19:50 Kernel mode
- 25:30 What is a Page fault?
- 30:30 First access page fault
- 33:00 Stack Expansion page fault
- 34:30 CoW page fault
- 38:00 Swap page fault
- 39:39 File backed page fault
- 40:29 Permission page fault
- 45:30 Summary
Englisch
Vereinigte Staaten
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WEITERE EPISODEN IN DIESEM PODCAST
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
⁃ ⁃ ⁃ ⁃ …
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Rechtliche Hinweise: Der auf dieser Seite eingebettete Podcast und das Bildmaterial stammen von Hussein Nasser, das Eigentum seines Eigentümers ist und nicht mit Listen Notes, Inc. verbunden ist oder von diesen unterstützt wird.
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