Re: How to talk to DAQ Hardware?

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On Mon, 27 Aug 2007, Carsten Emde wrote:

> I don't know what exactly "soft real-time" is, and I don't think there is an
> exact definition of it. The term "hard real-time", however, is well defined.
> It is the same as "real-time". It means that a system never ever exceeds a
> previously defined maximum latency.

As long as your non-realtime tasks are allowed to take locks, that also 
prevent real-time tasks from preempting them, and as long as you haven't 
proved that all those locks in all your non-realtime sources can never 
under any circumstances last longer than your pre-defined limit, it is not 
a hard-realtime OS.

This doesn't mean I don't like rt-opreempt:-) One just has to understand 
clearly its features and limitations.

Thanks
Guennadi
---------------------------------
Guennadi Liakhovetski, Ph.D.
DSA Daten- und Systemtechnik GmbH
Pascalstr. 28
D-52076 Aachen
Germany
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