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Re: [rtl] RT Ethernet
- Add flight simulator host to sub-system links to the list....
Phil Wilshire wrote:
>
> On Fri, 10 Sep 1999, Tomasz Motylewski wrote:
> [...]
> > I know this is no longer hard real time, but I also have a feeling
> that
> > people writing about RT ethernet do not really need it (I may be
> wrong, but
> > please show me a real life situation when 1 ms deadline on the net
> has to be
> > met at more than 99.9999 % of cases).
>
> Distriubuted control systems.
> IF the technology is available we'll use it.
> ( like next month .. running a rolling mill by Feb2000 if it works
> well enough)
>
> A HARD 1mS deadline opens up some really good options
>
> shared memory for example.
>
> We will run control say every 5mS and sync any memory changes inbetween
> runs.
>
> Current fiber optic shared memory solutiuons are approx $5,000 per node.
> 100mHz ethernet approx $50 per node not to mention the fiber costs.
>
> I am really excited by this capability.
>
> Phil Wilshire
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