[asterisk-users] Playback / Background / Read choppy, but musiconhold fine, even with ztdummy

[Benjamin Jacob]

> 
> OK, I think you need to home in on the differences
> between the server(s)
> that work fine and the one that doesn't.

As I said in my other mail, the faulty one is a 
.. mono processor machine, with SMP turned on
.. running CentOS 5
.. with kernel : 2.6.18-53.1.13.el5
There are other kernels too(2.6.18-8, etc.), will be
trying those kernels too.

The local working machine is :
.. dual processor, with SMP ofcourse
.. running Fedora Core 7, if I remember it correctly.
.. kernel definitely > 2.6.13

Have looked at all parameters, be it the kernel timer
frequency(1000 HZ), enhanced timer support, etc.
Everything seems to be set right. (Then again, I hope
I am looking at the correct places, i.e. .config files
and using make menuconfig).

> Try "watch -dn 1 cat /proc/interrupts" and check
> that the RTC interrupts
> are going up by 1024 per second. This is with
> ztdummy running.
This I gotta try. What if it isn't? And worse, what if
it is and I am still getting the choppy playbacks!! 


> 
> What else is going on on this server? Does it have
> any virtual machines
> on it? Does it have X Windows running? What does
> "top" show?

Unfortunately a lot of other processes are running too
on the server, one of them being httpd and other
sundry needed by the client (this inspite of
suggesting him to otherwise).

This is an Asterisk install not done by me, I just
added the zaptel installation and ztdummy module. Was
brazenly confident of things working in a jiffy(does
this count as a pun?), when I stepped in.

cheerz :-(

- Ben.






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