Re: [Xenomai] IRQ Handler latency

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

Le 29/03/2014 00:41, Newell Jensen a écrit :
> Hello,
> 
> I have successfully created an RTDM driver that uses the EPIT timer on the
> i.mx6dl-sabresd board.  The reason I created this driver is I wanted to see
> what the hard interrupt latency is using Xenomai.
> 
> AFAIK, I am using the RTDM skin in the proper way.  However, I wanted to
> run my code by the experts (you guys), to see if there is any improvements
> that I can make.
> 
> Here is a link to my code:  http://pastebin.com/TFWLq9mq
> 
> My questions are:
> 
> 1. Is there anything that I am not doing in my code that I should be to
> reduce interrupt latency?

Also, there is probably not much to gain by using this EPIT compared to
using Xenomai timer system. Xenomai timers are just that: executed on a
counter interruption, except that Xenomai timers have an anticipation
system which will help improving the perceived latency.


-- 
Gilles.