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Re: [Xen-users] 199% CPU in DomU


no we also have nagios (v1.3) running in one DomU but this one is runnig
without any problem since months (with 60 servers to check). On saturday
morning (23.09.06) we changed Dom0 to unstable and it's running without
problems until today (25.09.06). I'll tell you about our experiences in
a few days. But the unstable version seems to be very stable :-)

Thanks for answering!


Thomas Schneider schrieb:
> Hi,
> I have a similar problem with one of our DomUs. Just to narrow
> chances, is there nagios running on the 199% CPU-DomU?
> In my particular case, we narrowed down the processes to create that
> situation to the nagios-daemon. While this is running, the DomU
> happens to freeze - there is no connection possible neither ssh nor
> console.
> I'm hoping, anybody got a solution or some hints, what we can do.
> Thanks in advance,
> Tom
> --On 15. September 2006 16:21:21 +0200 Felix Jaussi
> <fj@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
>> Hi!
>> We have a silly Problem, we are using xen on 6 machines. Everything
>> works beautiful, but one DomU sometimes takes 199 percent of CPU an
>> hangs (says xm top). Only an xm destroy and recreate can "reaktivate" it
>> again. Normally it takes only around 25-40 percent. Sometimes it happens
>> 1 time per week but sometimes every day. There is no more load at
>> hangtime than normal and xen writes nothing to the logfiles (DomU/Dom0).
>> We already changed the Dom0 System (we have an identical machine) and
>> the Kernel is the same as on the other Systems and was built without USB
>> Support.
>> Have anybody an idea where I have to search for a solution of this
>> Problem? Or anybody who already solved it? :-)
>> Thanks for Help!
>> Felix
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Turtle Entertainment GmbH
Felix Jaussi,
Senior Systems Administrator
Technical Head of Events
Siegburger Str. 189
50679 Koeln
fon. +49 221 880449-312
fax. +49 221 880449-399

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