Re: Ada as a real time language

[Steve O'Neill <oneils@gbr.msd.ray.com>]

Mikael Lundqvist wrote:
> 
> I have heard that the Ada Run Time doesn't handle load
> that well. If you have to many tasks or to much input/output
> the Runtime gives in so to speak. 

Well, I certainly can't speak for all implementations but I would
consider this to be
1) a sweeping generalization 
2) hearsay
3) urban legend

In any case I'd prefer that you not repeat this kind of potential
mis-information.
Unless, of course, you have specific knowledge where this is true.  

> In that regard you should be better of with a RTOS. 

Maybe, maybe not.

> I have not any experience myself with large Ada programs. 

Then I have to wonder about the value of this information.

> Anybody out there who could comment?

Yes.  I *do* have experience with numerous Ada programs both large and
small.  Some of these used RTOS' while others did not.  I can say that
neither the Ada language nor the Ada run-time have ever been an obstacle
to producing real-time systems.  As others have said the primary reason
that we would use an RTOS was for the other services that they provide -
not for performance reasons.

This is not to say that you should blindly ignore potential performance
issues - you must keep these in mind as you design your system.

Steve O'Neill