[ale] Linux job

[Christopher Fowler]

Maybe the book "Structured Computer Organization" could be of use here.
Or "Operating Systems: Design and Implementation" or "Operating System
Concepts".  All three are in my personal library

On Wed, 2006-03-29 at 13:47 -0500, Jeff Hubbs wrote:
> Rev. Johnny Healey wrote:
> 
> > I thought UNIX and Windows were considered time-sharing.  They allow 
> > multiple users/services to use the system at the same time, but don't 
> > offer the same performance guarantees that a RTOS provides.
> 
> You're close.  "Time sharing" is a legacy term that refers to the idea 
> of multiple users running processes on the same computer at the same 
> time with no real sense of the other users' presence.  This was an 
> important conceptual leap from one computer per team of people all 
> working on the same task.  The term has fallen into disuse but is closer 
> in concept to "cooperative multitasking" in which the processes must 
> relinquish control without the use of a master scheduling mechanism.
> 
> UNIX, WinNT and derivatives, VMS, and Linux are all "pre-emptive 
> multitasking;" the operating system handles the scheduling.  Novell 
> Netware, old MacOS, and old Windows were CM OSses.  See 
> http://en.wikipedia.org/wiki/Computer_multitasking.
> 
> Jeff
> 
> 
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