RE: Futur toolkits ...

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Fagan, Tim (tim.fagan++at++dsto.defence.gov.au)
Thu, 18 Dec 1997 11:38:03 +1030

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> ----------
> From: remi++at++remi
> Sent: Thursday, 18 December 1997 5:42
> To: gce++at++syseca.fr
> Cc: info-performer++at++sgi.com
> Subject: Re: Futur toolkits ...
>

> I'd like someone to explain how is it possible to write a RealTime
> application without a RealTime operating system ?
>
It isn't its now called 'Near Real Time' or 'Soft Real Time' (in
difference to Hard Real Time) and means most of the time the process
will be performed in a timely manner but no hard garentees

> As far as I know, but I am not a specialist on that, Windows 9x/NT
> does
> not provide any equivalent of locking a CPU or having non degradable
> realtime process priorities that prevent the system to take time over
> the
> application.
There are now third party extensions to NT that will provide greater
real-time-ness, but I don't know enough about their performance to offer
advice.

> Is it that the meaning of RealTime changes when we deal with PC ? Are
> final customers happy with uncontrolable frame drops ? Or is there
> other
> ways to ensure RealTime with NT ?
I believe that there is a real time version of linux that is
very good.

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