SLIDE 1
1/12 18.04.2007
2/12 Maria Klemm 18.04.2007
The Nucleus of a Multiprogramming System Per Brinch Hansen 1970 - - PowerPoint PPT Presentation
The Nucleus of a Multiprogramming System Per Brinch Hansen 1970 - - PowerPoint PPT Presentation
The Nucleus of a Multiprogramming System Per Brinch Hansen 1970 18.04.2007 1/12 today's topics problem goal contributions short introduction details discussion 18.04.2007 Maria Klemm 2/12 contributions implementation (maybe the
SLIDE 2
SLIDE 3
3/12 18.04.2007
contributions
- implementation (maybe the first) of an idea
- fundamentals for further research (1970!)
SLIDE 4
4/12 18.04.2007
pictures
RC 4000 Per Brinch Hansen
SLIDE 5
5/12 18.04.2007
Multiprogramming System Monitor system nucleus
x is part (however in detail) of y
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6/12 18.04.2007
defined terms (1970!)
program document process
- internal
- external
peripheral device
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7/12 18.04.2007
multiprogramming system
independent, parallel, cooperating processes relationships among: resources (store + peripherals) data (programs + documents) processes (internal + external)
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8/12 18.04.2007
new features
- extensibility
- operation modes
- communication interface
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9/12 18.04.2007
process control + ressource allocation
Figure 1 no limit for number of tree-levels limited number of processes
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10/12 18.04.2007
process communication
send message wait message send answer wait answer
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11/12 18.04.2007
- operator communication
- program scheduling
- ressource allocation
- strategies
- program loading
- swapping
system nucleus
inside / outside
(2 strategies 4 procedures)
SLIDE 12
12/12 Maria Klemm 18.04.2007
end of talk / start of discussion
- influence on operating systems research ?
- yes, but how?
- basic paper for so called micro-kernels ?
- comparable with current approaches?