Re: [rtl] about rt-task period

[Michael Barabanov <baraban@fsmlabs.com>]

Could you post the full working code for this?

qiao (at80401@yahoo.com) wrote:
> hello
> 
>    when testing if the periodis too short,I find the code below do not work
> correctly
> -----------------------------------
> int overrun = 0;
> do{
> 	pthread_wait_np();
> 	if(overrun) {
> 	   conpr("overrun!\n");
> 	   break; 
> 	}
> 	overrun++;
> 	/* calculation code */
> 
> 	overrun--;
> 
>   }while(1);
> ------------------------------------
> for example, the calculation elapse 17 us, I set period=20us,
> the min,max value(actual period minus 20us)  is about 2.6 , 
> 9us /*see examples/measurement/rt_process.c*/,but if  set period=10us, 
> the min,max is about 23,30us , greater than perid! "overrun" doesn't 
> work, why?
> 
> thanks.
> 
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