[SR-Users] Log levels severely impacts performance

[Daniel-Constantin Mierla]

Hello,

excessive logging is known to impact the performances. If you have many
log messages printed from config, try to reduce them.

Performance could be also a matter of how many child processes you
created, via the children global parameter.

Cheers,
Daniel

On 14.09.22 04:18, Amit wrote:
>
> Hello,
>
>  
>
> We’ve been running Kamailio 5.5.0 for a while now and recently ran
> into an issue where the application buffer would get full and Kamailio
> has a lot of difficulty keeping up with REG requests. This severely
> impacted Kamailio’s ability to perform and resulted in many REG timeouts.
>
>  
>
> Running ‘watch netstat -ulpn’ revealed the buffer issue.
>
>  
>
> We usually run the production system at log level INFO (2) and had not
> ran into any issues in the past.
>
>  
>
> When the buffer issue occurred and after some testing, we discovered
> that changing the log level to NOTICE (1) was sufficient to bring the
> system back into operational status.
>
>  
>
> For example, at log level INFO (2) we seem to achieve ~150-200 REG/s
> while at log level NOTICE (1) we reach ~500-700 REG/s.
>
>  
>
> I did find this article in the wiki and tried using the “-“ in front
> of the log path but this didn’t seem to help.
>
> http://www.kamailio.org/wiki/tutorials/3.2.x/syslog
>
>  
>
> Even writing the logs directly to our external log server and
> preventing them from being written to the local disk doesn’t seem to
> alleviate the issue when the log level is set to INFO (2).
>
>  
>
> Does anyone have any experience with this or have any suggestions? We
> are finding it difficult to scale as a result of this issue.
>
>  
>
> Thank you in advance.
>
> Amit
>
>  
>
>
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-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
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