OT? Upper limits of FSB

[Paul Koning]

> On Jan 9, 2019, at 2:54 PM, dwight via cctalk <cctalk at classiccmp.org> wrote:
> 
> ...
> Of course in an embedded processor you can run in kernel mode and busy wait
> if you want.

Yes, and that has a number of advantages.  You get well defined latencies and everything that the program does gets done within bounded time (if you do the simple thing of putting work limits on all your work loops).  Knowing that your real time system can't ever block a task is a very good property.  By contrast, with interrupts, never mind priority schedulers, it's much harder to ensure this.

I've built network switches whose data paths were coded this way, and they are both simple and reliable.

	paul