Re: Ask yourself these before you choosing a 32bit OS...

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Article #1451

#1451

From: scott goehring
Date: Tue, 22 Aug 1995 10:02

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In article <41astd$53u@steel.interlog.com>,
Dave Glue <daveacg@interlog.com> wrote:

>>So, what I'm trying to say is that any OS that runs two of more apps
>>at the "same time" is basically multitasking.  However, underneath
>>the method may not be as efficient as, say... NT!
>
>True.  Pre-emptive is more efficient and smoother, which is why it was
>added into 95.

preemptive multitasking is _less_ efficient than nonpreemptive
multitasking, because of preemption overhead.  many supercomputers run
either a nonpreemptive OS or a an OS with limited preemption (the only
time a job can be preempted is when a job with higher priority than
the running job enters the run queue), because this maximizes CPU
utilization.

however, maximizing CPU utilization is not generally the goal of most
systems; balancing CPU utilization with user responsiveness is a more
common goal.

preemptive multitasking was developed largely to support "time sharing
systems".  read up on the history of computing.

i guess this all goes to prove that "those who do not learn from
history are doomed to repeat it."  all of this nonsense has been done
before, just on different computers by different companies.

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Path: arc1-ca.pugleaf.net!usenet.ucs.indiana.edu!sgoehrin
From: sgoehrin@copper.ucs.indiana.edu (scott goehring)
Newsgroups: comp.sys.powerpc,comp.os.linux.advocacy,comp.sys.mac.advocacy,comp.os.os2.advocacy,comp.sys.amiga.advocacy,comp.sys.intel,alt.2600,comp.os.ms-windows.advocacy
Subject: Re: Ask yourself these before you choosing a 32bit OS...
Date: 22 Aug 1995 10:02:05 GMT
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References: <3vh2hc$9dd@falcon.ccs.uwo.ca> <418hv3$451@steel.interlog.com> <41a874$ah8@ns2.ny.ubs.com> <41astd$53u@steel.interlog.com>
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