jitter under RTAI?

[Paolo Mantegazza]

walt wrote:
> I am presently running Comedi for digital I/O (combined read/write) WITHOUT 
> RTAI, & I notice a jitter of about 10 usec. I am interested in whether this 
> jitter can be significantly decreased by installing RTAI. I have been trying 
> to scan this mail list to see what I might expect, but my understanding of 
> what I see here is that not much better timing than 10 usec is likely under 
> RTAI. Have I understood this capability correctly? 
> 
> [The digital I/O hardware I am using is capable of much faster I/O.] 

What is your definition of jitter? Is it specific to your case? How are 
you measuring such a jitter using standard Linux?

Paolo.