[Asterisk-Dev] Re: ztdummy accuracy improvements on kernel 2.6

[Jerris, Michael MI]

> On May 16, 2005 08:59 am, Tony Mountifield wrote:
> > I think what is happening is that the zaptel processing invoked by 
> > ztdummy is not happening quite often enough due to missed jiffies. 
> > Consequently I suspect the incoming IAX channels are not being 
> > serviced often enough, and are building up a backlog.
> 
> If ztdummy's hitting it 1024 times a second instead of 1000 
> wouldn't that indicate that it was servicing it too often?
> 
> -A.

>From the original email:

which is to set the rtc irq to 1024Hz (it must be a power of 2), and
then skip 3 out of every 128 irqs (evenly spaced) to give 1000 zaptel
interrupts each second.