[Asterisk-Users] how to debug frame slips?

[Michael Welter]

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.
> 
> 
> With wcfxo/s stopped I'm only seeing 100 interrupts..?  I don't know enough
> about Linux internals - should it be 10 times this?

I don't know either.  I'm sitting next to someone else's Linux machine 
here at the client location.  A 'vmstat 1' shows 1000 interrupts/sec. 
'cat /proc/interrupts' shows no rtc interrupts but millions of timer 
interrupts.  My Linux system shows the same.

What does your 'cat /proc/interrupts' show?  What does it show after 
removing the Digium modules?

> 
> 
>>Also, which libtiff are you using.  I'm using 3.7.1 and appears to work
>>ok with Fedora 3.  Steve Underwood says 3.6.1 has problems.
> 
> 
> I have 3.5.7 - which Steve has stated works fine.  Yum never updated me to
> 3.7.1 - but I'll give that a shot.

Don't do that--it's not the problem.
> 
> Thanks - Joe
> 
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users at lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-users
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users
> 
> 


-- 
Michael Welter
Introspect Telephony Corp.
Denver, Colorado US
+1.303.674.2575
mike at introspect.com
www.introspect.com