On Mon, 16 Mar 2009, guoliang liu wrote:

> I am a newbie on RTlinux. If I have two task, one is periodic task  which
> has lower priority and the other one is aperiodic task which has higher
> priority, and the aperiodic task need more process time than periodic task,
> would the periodic task was blocked by aperiodic task?
> If periodic task was blocked, so it is not periodic anymore because it can
> not get period time from cpu.
>
> Any help is appreciate.
>
Welcome to the wonderful world of realtime operating systems... Yes, your
analysis is right (at least, when your operating system is using a
fixed-priority FIFO scheduler for both mentioned tasks). (And hence, your
design is wrong :-))
But these are not Orocos problems, so you might be better off on the
mailinglist of your RTOS.

Herman

Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm

Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm