smp support

Chris Johns chrisj at rtems.org
Fri Dec 29 06:21:31 UTC 2017


On 29/12/17 12:16 pm, bin.wang at qkmtech.com wrote:
> thanks a lot . 
> 
> i have another question , if i use the smp, can i use the interrupt of  rtems?
> which i want to interrupt period of hard real time of 125us. 
> 

Yes you can.

> i do not know the difference of the bare-metal interrupt and the rtems interrupt
> . is  the rtems interrupt have  performance loss of the hard real-time?

The interrupt overhead will have the same overhead each time and its
deterministic behaviour will depend on the other interrupts in your system and
their priority. The performance will depend on what you need to do in the interrupt.

> 
> what the schedule method of smp use? is it can affect the interrupt performance?
> 

That depends on your application.

Chris



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