[ECOS] Question

Andrew Lunn andrew.lunn@ascom.ch
Tue Feb 5 02:58:00 GMT 2002


On Tue, Feb 05, 2002 at 01:11:59PM +0100, Francesco Regazzoni wrote:
> Dear anyone,
> 
> We are two students. We read the user manual but we need some more
> detailed information about eCos, in particular, we would like to know
> how eCos manages dead-lines and how exactly work priority and event
> management, since we couldn't find them in the eCos manuals.

eCos is a soft real time system, not a hard real time system with a
deadline schedular. The default scheduler is a multi level queue with
round robin within a queue. So the scheduler will run a runnable
thread from the highest priority queue. If there are multiple runnable
threads in that queue, it round robins between them on each tick.

        Andrew



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