[Asterisk-Users] how to debug frame slips?

[Peter Svensson]

On Tue, 28 Dec 2004, Michael Welter wrote:

> Joe Presto wrote:
> > 
> >>Check 'vmstat 1'.  With a "quiet" system you should see mostly 100% idle 
> >>time.  How many interrupts are you seeing per one second interval?  It 
> >>should be +/- 1000 for the system timer and +/- 1000 for each Digium card.>
> > 
> > * confirmed.. about 1100 interrupts per sec
> > 
> Shouldn't you be seeing 1000 interrupts/s from the rtc?  And then 
> another 1000/s from the TDM card?  Do 'modprobe -r wcfxo' and wcfxs 
> (turn-off the TDM card) and check the interrupt count.

Older kernels used a 100 Hz system timer. RedHat switched during 2.4, the 
stock kernel switched later I think.

Peter