stress program in RTEMS

[Chris Johns]

On 23/10/2013 5:18 pm, Pierre Ficheux wrote:
> Hi,
>
> I'm currently writing a new article about RTEMS. I'm looking for an example of stress task such as "stress" or "hackbench" on Linux.
>
> What's the best way to generate stress for RTEMS ? using floating floating point operation?
>

With an RTOS you should consider how deterministic the performance is. 
For example create an application and have an input signal trigger an 
interrupt and turn an output on in the interrupt handler then dispatch a 
task. In the task turn off the output. Record the period the output is 
high. Next create 100 lower priority tasks and have them wake at 
different intervals and print messages. You should see no difference in 
the output signal's period. You could repeat with 200 tasks. This would 
highlight the importance of the algorithms used.

My point being stress and loading have a different meaning with an RTOS. 
Another idea would be the maximum interrupt load. I am sure others will 
have more ideas.

I hope this helps.

Chris