[SR-Users] Over 100% of CPU usage on kamailio

[Daniel-Constantin Mierla]

Hello,

when it occurs again, get the backtrace with gdb using the PIDs from all 
kamailio processes eating lot of CPU.

Btw, what version are you using (kamailio -V)?

Cheers,
Daniel

On 6/25/12 9:43 AM, Konstantin M. wrote:
> > do you have heavy traffic on that instance? How many children have 
> you configured?
>
> Yes, but only a voip. There are over 10k calls per day.
> fork=yes
> children=4
>
> This configuration is working during 1.5 months without any issues 
> till now...
>
>
> > What you can do is to attach with gdb to a process using lot of CPU 
> and do the backtrace:
> >
> > gdb /path/to/kamailio __pid__
> >
> > Replace __pid__ with the PID of process eating the CPU. Then run bt
> >
> > It may be a deadlock/infinite loop somewhere. I saw three processes 
> in top, others were down with no much cpu usage.
> > Is the SIP routing going fine anyhow when CPU usage is high?
>
> It hard to say 'yes', when looking to call graphs (rrd) I saw that the 
> calls throughput was slow down...
> Looking to logs/PCAP's/etc I'm seeing that some of calls were 
> processed though (perhaps some of working forks).
> But there were > 75-80% of failed calls with 478 Request Terminated.
> Also by analyzing a PCAP flows I saw that more than 70% of calls were 
> de-jittered, de-sync'ed in RTP timestamps, etc...
>
> > How do you solve it, by restart or it just appears from time to time 
> and solves itself periodically?
>
> I did not restarted kamailio during 20 days, following a charts this 
> problem was re-appeared during 2 days.
>
> After restart of kamailio -- I can't see any issues for now, there is 
> 0.00 on CPU by all of kamailio instance/forks/etc...
>
> >
> >
> >
> >Cheers,
> >Daniel
>
>
>
>
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-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 - http://asipto.com/u/katu
Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 - http://asipto.com/u/kpw

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