[ovirt-users] ovirt-ha-agent cpu usage

[Simone Tiraboschi]

On Wed, Oct 5, 2016 at 9:17 AM, gregor <gregor_forum at catrix.at> wrote:

> Hi,
>
> did you found a solution or cause for this high CPU usage?
> I have installed the self hosted engine on another server and there is
> no VM running but ovirt-ha-agent uses heavily the CPU.
>

Yes, it's due to the fact that ovirt-ha-agent periodically reconnects over
json rpc and this is CPU intensive since the client has to parse the yaml
API specification each time it connects.
The issue is tracked here:
https://bugzilla.redhat.com/show_bug.cgi?id=1349829 - ovirt-ha-agent should
reuse json-rpc connections
but it depends on:
https://bugzilla.redhat.com/show_bug.cgi?id=1376843 - [RFE] Implement a
keep-alive with reconnect if needed logic for the python jsonrpc client


>
> cheers
> gregor
>
> On 08/08/16 15:09, Gianluca Cecchi wrote:
> > On Mon, Aug 8, 2016 at 1:03 PM, Roy Golan <rgolan at redhat.com
> > <mailto:rgolan at redhat.com>> wrote:
> >
> >     Does the spikes correlates with info messages on extracting the ovf?
> >
> >
> >
> >
> >
> >
> > yes, it seems so and it happens every 14-15 seconds....
> >
> > These are the lines I see scrolling in agent.log when I notice cpu
> > spikes in ovirt-ha-agent...
> >
> > MainThread::INFO::2016-08-08
> > 15:03:07,815::storage_server::212::ovirt_hosted_engine_ha.
> lib.storage_server.StorageServer::(connect_storage_server)
> > Connecting storage server
> > MainThread::INFO::2016-08-08
> > 15:03:08,144::storage_server::220::ovirt_hosted_engine_ha.
> lib.storage_server.StorageServer::(connect_storage_server)
> > Refreshing the storage domain
> > MainThread::INFO::2016-08-08
> > 15:03:08,705::hosted_engine::685::ovirt_hosted_engine_ha.
> agent.hosted_engine.HostedEngine::(_initialize_storage_images)
> > Preparing images
> > MainThread::INFO::2016-08-08
> > 15:03:08,705::image::126::ovirt_hosted_engine_ha.lib.
> image.Image::(prepare_images)
> > Preparing images
> > MainThread::INFO::2016-08-08
> > 15:03:09,653::hosted_engine::688::ovirt_hosted_engine_ha.
> agent.hosted_engine.HostedEngine::(_initialize_storage_images)
> > Reloading vm.conf from the shared storage domain
> > MainThread::INFO::2016-08-08
> > 15:03:09,653::config::205::ovirt_hosted_engine_ha.agent.
> hosted_engine.HostedEngine.config::(refresh_local_conf_file)
> > Trying to get a fresher copy of vm configuration from the OVF_STORE
> > MainThread::INFO::2016-08-08
> > 15:03:09,843::ovf_store::100::ovirt_hosted_engine_ha.lib.
> ovf.ovf_store.OVFStore::(scan)
> > Found OVF_STORE: imgUUID:223d26c2-1668-493c-a322-8054923d135f,
> > volUUID:108a362c-f5a9-440e-8817-1ed8a129afe8
> > MainThread::INFO::2016-08-08
> > 15:03:10,309::ovf_store::100::ovirt_hosted_engine_ha.lib.
> ovf.ovf_store.OVFStore::(scan)
> > Found OVF_STORE: imgUUID:12ca2fc6-01f7-41ab-ab22-e75c822ac9b6,
> > volUUID:1a18851e-6858-401c-be6e-af14415034b5
> > MainThread::INFO::2016-08-08
> > 15:03:10,652::ovf_store::109::ovirt_hosted_engine_ha.lib.
> ovf.ovf_store.OVFStore::(getEngineVMOVF)
> > Extracting Engine VM OVF from the OVF_STORE
> > MainThread::INFO::2016-08-08
> > 15:03:10,974::ovf_store::116::ovirt_hosted_engine_ha.lib.
> ovf.ovf_store.OVFStore::(getEngineVMOVF)
> > OVF_STORE volume path:
> > /rhev/data-center/mnt/ovirt01.lutwyn.org:_SHE__DOMAIN/
> 31a9e9fd-8dcb-4475-aac4-09f897ee1b45/images/12ca2fc6-
> 01f7-41ab-ab22-e75c822ac9b6/1a18851e-6858-401c-be6e-af14415034b5
> > MainThread::INFO::2016-08-08
> > 15:03:11,494::config::225::ovirt_hosted_engine_ha.agent.
> hosted_engine.HostedEngine.config::(refresh_local_conf_file)
> > Found an OVF for HE VM, trying to convert
> > MainThread::INFO::2016-08-08
> > 15:03:11,497::config::230::ovirt_hosted_engine_ha.agent.
> hosted_engine.HostedEngine.config::(refresh_local_conf_file)
> > Got vm.conf from OVF_STORE
> > MainThread::INFO::2016-08-08
> > 15:03:11,675::hosted_engine::462::ovirt_hosted_engine_ha.
> agent.hosted_engine.HostedEngine::(start_monitoring)
> > Current state EngineUp (score: 3400)
> >
> >
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