<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Hello,<br>
<br>
when it occurs again, get the backtrace with gdb using the PIDs from
all kamailio processes eating lot of CPU.<br>
<br>
Btw, what version are you using (kamailio -V)?<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<div class="moz-cite-prefix">On 6/25/12 9:43 AM, Konstantin M.
wrote:<br>
</div>
<blockquote
cite="mid:CAEYtTzcTZvcbw-A-WapVekSL=j9DB9E6rjLUc+GvCJjBQ9C5rg@mail.gmail.com"
type="cite">> do you have heavy traffic on that instance? How
many children have you configured?<br>
<br>
Yes, but only a voip. There are over 10k calls per day.<br>
fork=yes<br>
children=4<br>
<br>
This configuration is working during 1.5 months without any issues
till now...<br>
<br>
<br>
> What you can do is to attach with gdb to a process using lot
of CPU and do the backtrace:<br>
><br>
> gdb /path/to/kamailio __pid__<br>
> <br>
> Replace __pid__ with the PID of process eating the CPU. Then
run bt<br>
> <br>
> It may be a deadlock/infinite loop somewhere. I saw three
processes in top, others were down with no much cpu usage. <br>
> Is the SIP routing going fine anyhow when CPU usage is high?
<br>
<br>
It hard to say 'yes', when looking to call graphs (rrd) I saw that
the calls throughput was slow down...<br>
Looking to logs/PCAP's/etc I'm seeing that some of calls were
processed though (perhaps some of working forks).<br>
But there were > 75-80% of failed calls with 478 Request
Terminated.<br>
Also by analyzing a PCAP flows I saw that more than 70% of calls
were de-jittered, de-sync'ed in RTP timestamps, etc...<br>
<br>
> How do you solve it, by restart or it just appears from time
to time and solves itself periodically?<br>
<br>
I did not restarted kamailio during 20 days, following a charts
this problem was re-appeared during 2 days.<br>
<br>
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...<br>
<br>
><br>
><br>
><br>
>Cheers,<br>
>Daniel<br>
<br>
<br>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:sr-users@lists.sip-router.org">sr-users@lists.sip-router.org</a>
<a class="moz-txt-link-freetext" href="http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users">http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users</a>
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla - <a class="moz-txt-link-freetext" href="http://www.asipto.com">http://www.asipto.com</a>
<a class="moz-txt-link-freetext" href="http://twitter.com/#!/miconda">http://twitter.com/#!/miconda</a> - <a class="moz-txt-link-freetext" href="http://www.linkedin.com/in/miconda">http://www.linkedin.com/in/miconda</a>
Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 - <a class="moz-txt-link-freetext" href="http://asipto.com/u/katu">http://asipto.com/u/katu</a>
Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 - <a class="moz-txt-link-freetext" href="http://asipto.com/u/kpw">http://asipto.com/u/kpw</a></pre>
</body>
</html>