[ovirt-users] ovirt-Guest-agent CPU usage

[Tadas]

I've used 
http://resources.ovirt.org/pub/ovirt-3.6/iso/oVirt-toolsSetup/3.6-3/oVirt-toolsSetup_3.6-3.fc23.iso
But also, i've compiled ovirt guest agent from sources from github and had 
the same result.

-----Original Message----- 
From: Vinzenz Feenstra
Sent: Thursday, August 11, 2016 3:39 PM
To: tadas at ring.lt
Cc: users at ovirt.org
Subject: Re: [ovirt-users] ovirt-Guest-agent CPU usage


> On Aug 11, 2016, at 2:20 PM, Tadas <tadas at ring.lt> wrote:
>
> Sorry, managed to send corrupted message.
>
> I do not think there's problems with virtio console drivers. I've
> installed ovirt guest tools iso from http://resources.ovirt.org/pub.
>  Also I can read data from ovirt agent on hypervisor side by using
> socat:
> "socat pathtosocketfile  -"
> This gives me all information about VM from ovirtagent. But as soon as
> i close reading socket, ovirt agent loops in itself and uses whole
> single core. If i socat again - load drops and I can see information
> from agent again. So problem is that you allways need to have socket
> open for read or write on hypervisor side. If not - ovirt agent will
> consume one cpu thread. And this happens only in Windows VM.

Can you please give me the exact version of the ISO you’re using?
I need to determine if you have the fixed one or if there’s another bug, the 
latest version should have this fixed already.


> On Thu, 2016-08-11 at 15:13 +0300, Tadas wrote:
>> "socat pathtosocketfile  -"
>> This gives me all information about VM from ovirtagent. But as soon
>> as
>> i close reading socket, ovirt agent loops in itself and uses whole
>> single core. If i socat again - load drops and I can see information
>> from agent again. So problem is that you allways need to have socket
>> open for read or write on hypervisor side. If not - ovirt agent will
>> consume one cpu thread. And this happens only in Windows VM.
>>
>>
>> On Thu, 2016-08-11 at 14:01 +0200, Vinzenz Feenstra wrote:
>>>
>>>>
>>>>
>>>> On Aug 11, 2016, at 12:21 PM, Tadas <tadas at ring.lt> wrote:
>>>>
>>>> It seems, that if socket is not opened at hypervisor side, ovirt
>>>> agent
>>>> starts to loop with loads of "VirtIoCHannel::200::root::Written"
>>>> messages per second.
>>>
>>> You probably don’t have the virtio drivers for the channel
>>> communication installed
>>>
>>> please install the VirtIO Console  drivers on that machine and
>>> restart the agent service
>>>
>>>>
>>>>
>>>> If hypervisor opens ovirt socket, then cpu usage drops to normal
>>>> state.
>>>> Is this intentional? This does not happen on Linux guest.
>>>> On Thu, 2016-08-11 at 13:05 +0300, Tadas wrote:
>>>>>
>>>>>
>>>>> Hello groups,
>>>>>
>>>>> we are having problem with ovirt-guest agent on Windows os.
>>>>> When
>>>>> started, agent fully utilizes one core (if machine has single
>>>>> core,
>>>>> then you will see 100% CPU usage, if there are two cores, then
>>>>> you
>>>>> will
>>>>> get 50% usage etc). Usage does not drop and persists for a
>>>>> whole
>>>>> time
>>>>> ovirt agent is running. This happens on windows 7 32 and 64
>>>>> versions
>>>>> and also on windows 10. Have anybody had the same issue?
>>>>> Thank you.
>>>>> _______________________________________________
>>>>> Users mailing list
>>>>> Users at ovirt.org
>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>> _______________________________________________
>>>> Users mailing list
>>>> Users at ovirt.org
>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>
>> _______________________________________________
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