On Wed, Oct 5, 2016 at 10:24 AM, Simone Tiraboschi <stirabos@redhat.com> wrote:

On Wed, Oct 5, 2016 at 9:17 AM, gregor <gregor_forum@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.

Simone, reusing the connection is good idea anyway, but what you describe is 

a bug in the client library. The library does *not* need to load and parse the

schema at all for sending requests to vdsm.

The schema is only needed if you want to verify request parameters,

or provide online help, these are not needed in a client library.

Please file an infra bug about it.

Nir

 

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@redhat.com

> <mailto:rgolan@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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