[asterisk-users] kernel: dahdi: Detected time shift.

[Mark Deneen]

On Wed, Nov 24, 2010 at 11:43 AM, Jonas Kellens
<jonas.kellens at telenet.be> wrote:
> Hello list,
>
> I'm experiencing a lot of server freezes lately. The server just... freezes.
>
> I notice in the log files (/var/log/asterisk/messages & /var/log/messages)
> that logging stops at the time the server hangs. Logging continues when the
> server has been restarted (which is the only solution).
>
> So it is not a proces that hangs, it's the entire server (CentOS5.5 +
> Asterisk + MySQL).
>
> I really have no idea what can be causing these sudden freezes. Memory stays
> mostly at 250MB of 512 MB total, CPU is 97% to 100% idle...
>
> /var/log/asterisk/debug tells me nothing, no lines that indicate something
> strange before the freeze (debug level 9).
>
> I have no core.pid file in /tmp, when I look after rebooting the server.
>
> The only thing I have is a high level of mentionning of "kernel: dahdi:
> Detected time shift." in /var/log/messages.
>
>
> What is causing this kernel message ? Could this be the cause of the server
> freeze ?
>
> Thank you for every feedback you can give me.

Jonas,

Do you have a monitor attached to the server?  If the kernel is
crashing, you might be able to catch the stack trace there.

-M