Re: [Xen-users] Missed interrupt. Increasing latency to 5 ms in orderto compensate.

["C. Mylonas (Mr VoIP)" <chris@xxxxxxxxxxxxx>]

Dear Jamie,

I would not be putting telephony onto virtual infrastructure in a production environment period.
If you are looking after this system, and are able to put it back onto a physical server, it's not worth the stress of it, especially when using the switching network through telephony interface cards.

As soon as your system chokes, you'll have XX amount of users hurling abuse at the phones or yourself, and management will look badly on the whole virtualisation thing you're trying to achieve with Xen.

Chris

On Wed, Jun 11, 2008 at 12:32 PM, [STD]Ein <ein@xxxxxxxxxxxxxx> wrote:

Is it possible the cpu(s) are being taxed?  If they are under heavy load (from another domain most likely) it may cause the domain to not respond to interrupts in a timely manner.  If this is the case, you might try changing the scheduling weights of your domains (search the list).

 

---

From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Jamie J. Begin
Sent: June 10, 2008 1:12 PM
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Missed interrupt. Increasing latency to 5 ms in orderto compensate.

 

I am using pciback to pass a Digium PCIX analog telephony card to an Asterisk domU.  Seemingly at random times, the card wigs out with the following appended to my /var/log/messages:

 

Jun 10 12:17:19 asterisk01 kernel: wctdm24xxp0: Missed interrupt. Increasing latency to 4 ms in order to compensate.

Jun 10 14:01:01 asterisk01 kernel: wctdm24xxp0: Missed interrupt. Increasing latency to 5 ms in order to compensate.

 

This is becoming a major problem because it will drop any active calls and refuse to accept new calls until I stop Asterisk, remove and then re-add the kernel module, and finally restart Asterisk.  I don't know whether the drivers, Xen, the motherboard/BIOS, or Asterisk is to blame.  However, this did not occur until after I virtualized the server.  Does anyone have any suggestions?  This is killing me here…

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users

-- 
Kind Regards,
Chris Mylonas
Engineer
_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users