[users at bb.net] buildbot CPU usage

[Pierre Tardy]

You can try to hit the button in the morning with a two hours gather
period, and hope that you see the spike during that period..


Le jeu. 25 août 2016 à 12:17, Francesco Di Mizio <francescodimizio at gmail.com>
a écrit :

> Thanks a lot! Pierre I will def will give it a shot. I am not sure I'll be
> able to smash that 'start recording' button as the UI isusuallystuck when
> the CPU spikes. Updates to come!
>
> On Thu, Aug 25, 2016 at 10:45 AM, Pierre Tardy <tardyp at gmail.com> wrote:
>
>> Hi Francesco,
>>
>> I spent some time in order to implement a profiler plugin for buildbot
>>
>> You can give it a look, and send your profile.json file if you need more
>> analysis from me.
>> https://github.com/tardyp/buildbot_profiler
>>
>> Regards,
>> Pierre
>>
>>
>> Le mer. 24 août 2016 à 22:43, Francesco Di Mizio <
>> francescodimizio at gmail.com> a écrit :
>>
>>> I've tried and it's not an easy task because of my Win into Vagrant into
>>> Docker setup.
>>> I'll try again soon when I get a Linux  box!
>>>
>>> On Fri, Aug 19, 2016 at 5:54 PM, Vasily <just.one.man at yandex.ru> wrote:
>>>
>>>> Umm, no. VTune has Python support starting 2017 Beta, and, well, it was
>>>> my team (at Intel) work actually :-)
>>>>
>>>> P.S. I'm from Intel, too.
>>>>
>>>> Thanks,
>>>> Vasily
>>>> 19 авг. 2016 г. 18:17 пользователь "Francesco Di Mizio" <
>>>> francescodimizio at gmail.com> написал:
>>>>
>>>> I had thought you were making fun of Intel somehow ;)
>>>>>
>>>>> On Aug 19, 2016 5:07 PM, "Pierre Tardy" <tardyp at gmail.com> wrote:
>>>>>
>>>>> ahah
>>>>>
>>>>> I though this was a taunt on me being employed by Intel.
>>>>> I actually had mitigated experience with vtune few years ago, and
>>>>> didn't know they had python support until then.
>>>>> Being an opensource guy, I usually neglegate to look at proprietary
>>>>> stuff.
>>>>>
>>>>> Pierre
>>>>>
>>>>> Le ven. 19 août 2016 à 12:18, Vasily <just.one.man at yandex.ru> a
>>>>> écrit :
>>>>>
>>>>>> I'm again suggesting to look into Python profiling capabilities of
>>>>>> Intel® VTune™ Amplifier. It could run statistical profiling for a long time
>>>>>> and display CPU usage over time, so the developer can look at specific time
>>>>>> range where CPU usage was too high and see which functions were executed.
>>>>>>
>>>>>> Thanks,
>>>>>> Vasily
>>>>>> 19 авг. 2016 г. 11:57 пользователь "Pierre Tardy" <tardyp at gmail.com>
>>>>>> написал:
>>>>>>
>>>>>> Hi Francesco,
>>>>>>>
>>>>>>> Your described setup looks sane to me.
>>>>>>>
>>>>>>> The problems we are trying to catch are cpu spikes, as far as I
>>>>>>> understand, which does not happen for very long, but are very annoying for
>>>>>>> users, as it is blocking the reactor.
>>>>>>>
>>>>>>> This problem is not easy to see in the profile you sent, as this
>>>>>>> profile is over long time, so we see the average of each method during the
>>>>>>> day and not the spikes.
>>>>>>>
>>>>>>> What would really be needed is a on-demand profiler which would
>>>>>>> detect cpu spikes and only log the stack traces during those times.
>>>>>>>
>>>>>>> Here is a nice blog pst explaining why statistic profiling is cool
>>>>>>> and easy to implement in python.
>>>>>>> https://nylas.com/blog/performance
>>>>>>>
>>>>>>> For 0.9.1 I want to concentrate on scalability, and write a
>>>>>>> debugging ui plugin based on those ideas (and probably code)
>>>>>>>
>>>>>>> That would be great if your team can help on that matter.
>>>>>>>
>>>>>>> Regards,
>>>>>>> Pierre
>>>>>>>
>>>>>>
>>>>>
>>>
>
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