Re: What's Real-Time? (was Re: Widespread C++ Competency Gap?)

[rjc@oghma.synapse.net (Robert J Carter)]

In article <PRZEMEK.94Dec31120819@rrdjazz.nist.gov>,
Przemek Klosowski <przemek@rrdjazz.nist.gov> wrote:


>The article claims that for large systems the average resource
>requirements are vastly different from worst-case requirements, and so
>large 'hard' systems in the traditional sense are simply too
>wasteful. An example is the telephone system. It is not 'hard real
>time': the cost would be just too big. Instead, they figured out how
>to manage available resources to have acceptably low failure rates.

That's fine as far as it goes, but having done some work myself with 
reactor systems (I saw your sig), what is an acceptably low failure rate
for the emergency shutdown system of a reactor?
-- 
Robert J Carter                                         Oghma Systems
Ottawa, Ontario, Canada                          FAX: +1 613 231.4732
rjc@oghma.synapse.net                          rjc@oghma.ocunix.on.ca