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

[Simone Tiraboschi]

On Wed, Apr 26, 2017 at 6:14 PM, Gianluca Cecchi <gianluca.cecchi at gmail.com>
wrote:

> On Wed, Apr 26, 2017 at 4:54 PM, Simone Tiraboschi <stirabos at redhat.com>
> wrote:
>
>>
>>
>> On Wed, Apr 26, 2017 at 4:52 PM, Gianluca Cecchi <
>> gianluca.cecchi at gmail.com> wrote:
>>
>>> On Wed, Apr 26, 2017 at 4:28 PM, Simone Tiraboschi <stirabos at redhat.com>
>>> wrote:
>>>
>>>>
>>>>
>>>>
>>>> On 4.1.1, the 96% of the cpu time of ovirt-ha-agent is still spent in
>>>> connect() in /usr/lib/python2.7/site-packages/vdsm/jsonrpcvdscli.py
>>>> and the 95.98% is in Schema.__init__ in /usr/lib/python2.7/site-pac
>>>> kages/vdsm/api/vdsmapi.py
>>>>
>>>> So it's still the parsing of the api yaml schema.
>>>> On master we already merged a patch to reuse an existing connection if
>>>> available and this should mitigate/resolve the issue:
>>>> https://gerrit.ovirt.org/73757/
>>>>
>>>> It's still not that clear why we are facing this kind of performance
>>>> regression.
>>>>
>>>>
>>> Does this mean that I could try to patch the
>>>   ovirt_hosted_engine_ha/lib/util.py file also in my 4.1.1 install and
>>> verify if it solves...?
>>>
>>
>> Unfortunately it's not enough by itself since it also requires
>> https://gerrit.ovirt.org/#/c/58029/
>>
>>
>>> Or do I have to wait an official patched rpm?
>>>
>>> Gianluca
>>>
>>
>>
> And what if I change all the 3 files involved in the 2 gerrit entries:
> ovirt_hosted_engine_ha/lib/util.py
> lib/yajsonrpc/stomp.py
> lib/yajsonrpc/stompreactor.py
>
> ?
>
>
Yes, it should work although we never officially back-ported and tested it
for 4.1.z.
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