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Re: [OVS] Loopingcall and high load on nova comp

 

Hi! This means that this loopingcall will be running in a hard loop
(no delay between runs) because it is taking longer than the interval
it has requested to be called at.

Either we need to change the interval (if that's ok, no idea with
Quantum), or we need to make the work being done in a loop faster.

Hope that helps,
Michael

On Fri, May 17, 2013 at 8:41 PM, Heiko Krämer <info@xxxxxxxxxxxxxxx> wrote:
> Hi guys,
>
> i seen on each nova compute node a ressource overhead caused by quantum
> ovs agent.
>
> This means if only runs the agent on the compute node (+ nova-compute)
> i'll have sometimes a load by 2. The agent will have a many cpu hours
> and if i take a look into the log file i see manytimes this one:
>
> 2013-05-17 12:35:46  WARNING [quantum.openstack.common.loopingcall] task
> run outlasted interval by 0.195565 sec
> 2013-05-17 12:35:50  WARNING [quantum.openstack.common.loopingcall] task
> run outlasted interval by 0.24272 sec
> 2013-05-17 12:35:54  WARNING [quantum.openstack.common.loopingcall] task
> run outlasted interval by 0.254162 sec
> 2013-05-17 12:35:58  WARNING [quantum.openstack.common.loopingcall] task
> run outlasted interval by 0.131815 sec
> 2013-05-17 12:36:02  WARNING [quantum.openstack.common.loopingcall] task
> run outlasted interval by 0.213518 sec
> 2013-05-17 12:36:07  WARNING [quantum.openstack.common.loopingcall] task
> run outlasted interval by 0.212293 sec
> 2013-05-17 12:36:11  WARNING [quantum.openstack.common.loopingcall] task
> run outlasted interval by 0.223576 sec
>
> I've searched to this warning but without success.
>
> Anyone have an idea or the same problem ?
>
>
> Greetings
> Heiko
>
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