1
What Does an Idle CPU Do?
In the last post I said the fundamental axiom of OS behavior is that at any given time, exactly one and only one task is active on a CPU. But if there’s absolutely nothing to do, then what? It turns
Gustavo Duarte
- Popular posts
- 7
- Total points
- 1,313
- HN comments
- 244
- Rank
- #1,509 personal
Visit duartes.org → On Hacker News Apr 2008 – Oct 2014
Systems & Performance 4Software Engineering 3Life, Learning & Writing 1Programming Languages 1History & Retro Computing 1Career & Management 1
2
How a computer boots up
The previous post described [motherboards and the memory map] memory-map in Intel computers to set the scene for the initial phases of boot. Booting is an involved, hacky, multi-stage affair - fun st
3
How The Kernel Manages Your Memory
After examining the virtual address layout of a process, we turn to the kernel and its mechanisms for managing user memory. Here is gonzo again: Linux processes are implemented in the kernel as insta
4
Anatomy of a Program in Memory
Memory management is the heart of operating systems; it is crucial for both programming and system administration. In the next few posts I'll cover memory with an eye towards practical aspects, but wi