[SR-Users] High load average

[Daniel-Constantin Mierla]

Hello,

the async task workers are in recvfom(), which should not increase any load.

Do you have any chance to test on another os/version? Maybe on centos 7
and see if it is the same case?

Cheers,
Daniel

On 25.05.20 17:56, Володимир Іванець wrote:
> Hello again,
>
> I attached a new file.
>
> The interesting part is that Kamailio does not load the CPU at all.
> /Top/ shows it at the bottom. Only the "load average" value gets
> increased.
>
> Thank you!
>
> пн, 25 трав. 2020 о 16:34 Daniel-Constantin Mierla <miconda at gmail.com
> <mailto:miconda at gmail.com>> пише:
>
>     Hello,
>
>     can you install the package with kamailio debugging symbols? Then
>     take again the kamctl trap with two async workers, it should
>     contain more details about what pieces of code run.
>
>     The package should be named like kamailio-dbg...
>
>     Besides that, can you also do a 'top' and see what kamailio
>     processes (their PIDs) eat a lot of cpu?
>
>     Cheers,
>     Daniel
>
>     On 25.05.20 11:05, Володимир Іванець wrote:
>>     Hello,
>>
>>     Attached are two files. One for 2 Async Task Workers and one for
>>     8 Workers. The second one was stuck and did not complete.
>>
>>     I should point out that the virtual machine has 2 CPU cores. Load
>>     average value was stable with 2 workers and was slowly increasing
>>     after adding more workers. * workers caused it to increase very fast.
>>
>>     Thank you!
>>
>>     пт, 22 трав. 2020 о 22:00 Daniel-Constantin Mierla
>>     <miconda at gmail.com <mailto:miconda at gmail.com>> пише:
>>
>>         Hello,
>>
>>         if you can, it would be interesting to get the backtrace and
>>         see what was causing the load.
>>
>>         Iirc, the Async Task Worker should wait on read on an
>>         internal socket, so it should be no CPU used when nothing is
>>         transmitted to this type of workers.
>>
>>         Cheers,
>>         Daniel
>>
>>         On 22.05.20 19:20, Володимир Іванець wrote:
>>>         Hello Daniel,
>>>
>>>         Thank you for your response.
>>>
>>>         I run /kamctl trap/ command but the procedure got stuck.
>>>         Last line in the generated file contained "---start 12767
>>>         -----".  12767 was an Async Task Worker. Since I don't need
>>>         them I just removed related configuration. It must be left
>>>         after the testing. This solved the problem.
>>>
>>>         Please let me know if you are still interested in what was
>>>         going on and if I should restore the configuration and
>>>         run /kamctl trap/ again.
>>>
>>>         Thank you very much!
>>>
>>>         пт, 22 трав. 2020 о 19:10 Daniel-Constantin Mierla
>>>         <miconda at gmail.com <mailto:miconda at gmail.com>> пише:
>>>
>>>             Hello,
>>>
>>>             install gdb and, when the load is high, run:
>>>
>>>             kamctl trap
>>>
>>>             It write a file with what kamailio was doing at that
>>>             moment. Send it over here on mailing list or make it
>>>             available for download somewhere. We can look at it and
>>>             guide further about what can be done.
>>>
>>>             Cheers,
>>>             Daniel
>>>
>>>             On 22.05.20 16:53, Володимир Іванець wrote:
>>>>             Hello everyone!
>>>>
>>>>             I'm running Kamailio version 5.3.3 on a CentOS 6. I
>>>>             started noticing that "load average" value
>>>>             increases rapidly with the start of Kamailio:
>>>>
>>>>                 # uptime
>>>>                 17:47:52 up 4 days, 17:47,  3 users,  load average:
>>>>                 7.02, 7.01, 6.02
>>>>
>>>>             It will start to decrease immediately after Kamailio is
>>>>             stopped.
>>>>
>>>>             Does anyone know what could cause this and how to
>>>>             troubleshoot it?
>>>>
>>>>             Thank you!
>>>>
>>>>             _______________________________________________
>>>>             Kamailio (SER) - Users Mailing List
>>>>             sr-users at lists.kamailio.org <mailto:sr-users at lists.kamailio.org>
>>>>             https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>
>>>             -- 
>>>             Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
>>>             www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
>>>             Funding: https://www.paypal.me/dcmierla
>>>
>>         -- 
>>         Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
>>         www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
>>         Funding: https://www.paypal.me/dcmierla
>>
>     -- 
>     Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
>     www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
>     Funding: https://www.paypal.me/dcmierla
>
-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Funding: https://www.paypal.me/dcmierla

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