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

[Jonas Kellens]

Hello.

Thank you for the feedback.

To reply to all the information :

@ Shaun Ruffell : What do you mean by Wall time ?
This server is indeed also time server (ntpd is running)

@ Mark Deneen : No, no monitor attached. This is a Xen VPS. I do have a 
VPS interface, but this is also frozen when the server hangs...

@ William Stillwell : I run Asterisk 1.6.2.10 with Dahdi 2.4.0 (as 
timing source). Time on my server seems very consistent. When doing 
/usr/sbin/ntpdate (once a month) there is a very very small offset.


Kind regards,
Jonas.



On 11/24/2010 06:22 PM, William Stillwell (Lists) wrote:
>
> I know there was a patch for dahdi to fix server lockups on time 
> shift. (not sure what version, but if you changed the time, the server 
> would just go crash.)
>
> Do you have the latest version ?
>
> Check your ntpd settings to make sure your time isn't bouncing all 
> over the place.
>
> William Stillwell
>
> *From:* asterisk-users-bounces at lists.digium.com 
> [mailto:asterisk-users-bounces at lists.digium.com] *On Behalf Of *Jonas 
> Kellens
> *Sent:* Wednesday, November 24, 2010 11:44 AM
> *To:* Asterisk Users Mailing List - Non-Commercial Discussion
> *Subject:* [asterisk-users] kernel: dahdi: Detected time shift.
>
> 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.
>
>
> Kind regards,
> Jonas.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20101125/2e6c87b6/attachment-0001.htm