Understanding Virtual Memory (ualberta.ca)

Though there are many innovations in LoseThos, being simpler than Linux is one of the main selling points.

The original spec for LoseThos was "no virtual memory" in the hopes of speed.

ring-0-only was also for speed and simplicity.

Original specs:

http://web.archive.org/web/20040606212724/http://www.simstru...

Worth also looking here: http://www.cs.gmu.edu/cne/pjd/PUBS/Workingsets.html

Had the great pleasure of being one of his students years ago during my undergrad. Hands down the best professor I've ever had.

http://en.wikipedia.org/wiki/Peter_J._Denning

Here are some other great resources on understanding how the OS (in this case linux) manages the memory, and how the hardware works.

http://tldp.org/LDP/tlk/mm/memory.html

http://lwn.net/Articles/250967/

I've found the set of short articles on memory here to be excellent:

http://duartes.org/gustavo/blog/post/page-cache-the-affair-b...

I love seeing links like this on HN: you can actually learn something, not just read some opinionated article :)

Makes me wonder how fast OS level garbage collection could be, without the need to have a virtual memory layer in between...