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

[Simone Tiraboschi]

On Wed, Apr 26, 2017 at 12:52 PM, Nir Soffer <nsoffer at redhat.com> wrote:

> On Wed, Apr 26, 2017 at 11:36 AM Gianluca Cecchi <
> gianluca.cecchi at gmail.com> wrote:
>
>> On Tue, Apr 25, 2017 at 11:28 PM, Nir Soffer <nsoffer at redhat.com> wrote:
>>
>>>
>>>
>>> Hi Gianluca,
>>>
>>> You can run this on the host:
>>>
>>> $ python -c "import yaml; print 'CLoader:', hasattr(yaml, 'CLoader')"
>>> CLoader: True
>>>
>>> If you get "CLoader: False", you have some packaging issue, CLoader
>>> is available on all supported platforms.
>>>
>>> Nir
>>>
>>>
>>>> Thanks,
>>>> Gianluca
>>>>
>>>>
>>
>> It seems ok.
>>
>> [root at ovirt01 ovirt-hosted-engine-ha]#  python -c "import yaml; print
>> 'CLoader:', hasattr(yaml, 'CLoader')"
>> CLoader: True
>> [root at ovirt01 ovirt-hosted-engine-ha]#
>>
>> Anyway see here a sample of the spikes that it cntinues to have.. from
>> 15% to 55% many times
>> https://drive.google.com/file/d/0BwoPbcrMv8mvMy1xVUE3YzI2YVE/
>> view?usp=sharing
>>
>
> There are two issues in this video:
> - Memory leak, ovirt-ha-agent is using 1g of memory. It is very unlikely
> that it needs so much memory.
> - Unusual cpu usage - but not the kind of usage related to yaml parsing.
>
> I would open two bugs for this. We have seen the first issue few month
> ago, and
> we did nothing about it so the memory leak was not fixed.
>
> To understand the unusual cpu usage, we need to integrate yappi into
> ovirt-ha-agent,
> and do some profiling to understand where cpu time is spent.
>
> Simone, can you do something based on these patches?
> https://gerrit.ovirt.org/#/q/topic:generic-profiler
>
> I hope to get these patches merged soon.
>
>
Absolutely at this point.


> Nir
>
>
>>
>>
>> The host is an Intel NUC6i5 with 32Gb of ram. There are the engine, an
>> F25 guest and a C7 desktop VMs running, without doing almost anything.
>>
>> Gianluca
>>
>>
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