req:p9 - implementation details

[Daniel Lang dpl@dcs.ed.ac.uk]

Hi there,

doing a major essay comparing operation systems I need some
detailed information about plan9, if available.
Unfortunatetly the papers published in www didn't answer
my questions and I cannot afford to buy the programmer's 
manual, so I hope someone in here can help me.

- What are the kernels policies for memory management ?
  (segmentation , paging, under which conditions are 
   pages swapped out , ect)
  .. for cpu scheduling ? (priority queues ? RR ? whatever)
  Are there differences btw cpu-server, fileserver, terminal
  kernels concerning the things above ?

- How are processes implemented ? (What kind of data-structures are
  used ? process tables, signal handling, registers, system calls,
  stack, etc ) What about the threads  (I think there's some information
  about that in the papers...)
  
..so far. 
Maybe some more question will arise.  

Thanks in advance, 
 Daniel Lang

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