[asterisk-users] Zaptel timer on Intel Dual Core servers

[Tzafrir Cohen]

On Sat, Feb 02, 2008 at 09:46:42AM +0100, Johansson Olle E wrote:
> Friends,
> 
> I'm having severe problems with zaptel timers on Intel Dual Core  
> systems with SMP code enabled. Ztdummy, zaptel connected to Digium TDM  
> or PRI cards - all ends up with large timer probems - zttest going  
> down to 50% accuracy on some systems, even to -1 on ztdummy systems  
> and voice quality is no more.  A restart is the only way to get back  
> to a working system.

A restart of asterisk? Not touhcing the kernel modules? 

What CPU is it, exactly? /proc/cpuinfo would help.

What version of Zaptel? Asterisk? Kernel? distribution?

What happens if you don't run those meetme-s?

> 
> We're only running a few meetme's with a total of 10 participants, so  
> the load is not excessive. Only SIP calls, nothing else (it's me,  
> right :-) ) ? If I hit the system with SIPP targeting an extension  
> only doing playback, which doesn't even use zttimer, the timer slides  
> away.

When exactly does a playback to a SIP channel use timing from zaptel? I
know that bad zaptel timer is known to mess sound playback anywhere. I
just don't fuly understand why.

-- 
               Tzafrir Cohen
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