Linux is not reliable enough because ...

[Alexander Henry]

On Sun, 16 May 2004 20:34:56 -0500, Jerry Davis <jfdecd@wi.rr.com> wrote:

> The last time I worked with Real Time was in the 80's with RSX--11S and M
> also RT-11 earlier than that.
>
> These are the only real-time opsys's that I worked with. I remember being
> project lead on a RSX-11S project where I wrote an MS-1553B interface.
> On a PDP-11/23+ after about 3 years, I got it to maintain 2500 
> interrupts per
> second. I can't imagine what Today's processors would do. Is the Linux 
> kernel
> with today's processors really THAT bad? But again, the PDP-11 was 
> designed
> with interrupts in mind. I don't know how latent the Intel processors 
> are.
>
> Jerry
>

Depending on how you look at it, the particular system I worked on either 
had zero interrupts, or it had the same number of 'interrupts' as the 
number of global variables in the code, and absolutely all of them raised 
an interrupt every 100ms.  :)  The entire set of programs on the processor 
executed every 100ms, and the ALL had to finish in under 100ms.  There was 
no scheduler; one processor, one job.


-- 

--Alexander