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<p class="MsoNormal"><span style="font-size:11.0pt">Bogdan,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I do still have the corefiles, but isn’t that useless to you without my exact system (binaries, modules,etc)? Either way, I’m happy to send it.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">Ben Newlin </span>
<span style="font-size:11.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">Bogdan-Andrei Iancu <bogdan@opensips.org><br>
<b>Date: </b>Tuesday, November 13, 2018 at 3:29 PM<br>
<b>To: </b>Ben Newlin <Ben.Newlin@genesys.com>, OpenSIPS users mailling list <users@lists.opensips.org><br>
<b>Subject: </b>Re: [OpenSIPS-Users] CPU 100% with TCP<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><tt><span style="font-size:10.0pt">Ben,</span></tt><span style="font-size:10.0pt;font-family:"Courier New",serif"><br>
<br>
<tt>The dump you send is actually the backtrace from all the procs. What is the Holly Grail is the corefile to be inspected via gdb (off list, of course).</tt><br>
<br>
<tt>Thanks and regards, </tt><br>
<br>
</span><o:p></o:p></p>
<pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
<pre> <a href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a><o:p></o:p></pre>
<pre>OpenSIPS Bootcamp 2018<o:p></o:p></pre>
<pre> <a href="http://opensips.org/training/OpenSIPS_Bootcamp_2018/">http://opensips.org/training/OpenSIPS_Bootcamp_2018/</a><o:p></o:p></pre>
<div>
<p class="MsoNormal">On 11/13/2018 07:36 PM, Ben Newlin wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="font-size:11.0pt">Bogdan,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Can you clarify if you’re saying you need more information beyond the dumps I’ve just provided to you off-list?</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">Ben Newlin </span>
<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">Bogdan-Andrei Iancu
<a href="mailto:bogdan@opensips.org"><bogdan@opensips.org></a><br>
<b>Date: </b>Tuesday, November 13, 2018 at 11:11 AM<br>
<b>To: </b>Ben Newlin <a href="mailto:Ben.Newlin@genesys.com"><Ben.Newlin@genesys.com></a>, OpenSIPS users mailling list
<a href="mailto:users@lists.opensips.org"><users@lists.opensips.org></a><br>
<b>Subject: </b>Re: [OpenSIPS-Users] CPU 100% with TCP</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
</div>
<p class="MsoNormal"><tt><span style="font-size:10.0pt">Hi Ben,</span></tt><span style="font-size:10.0pt;font-family:"Courier New",serif"><br>
<br>
<tt>Sorry for not being able to answer you before sending the new set of BTs. Indeed, getting the corefile of only one process will do it as the locks (and debug info) are in the shared memory. So, the deadlock happens again, do the "opensipsctl trap" and get
the corefile of one process (ideally an UDP worker - get its pid via "opensipsctl fifo ps").</tt><br>
<tt>Keep the core as we will have to dig into it together :).</tt><br>
<br>
<tt>Many thanks,</tt><br>
<br>
<br>
<br>
</span><o:p></o:p></p>
<pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
<pre> <o:p></o:p></pre>
<pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
<pre> <a href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a><o:p></o:p></pre>
<pre>OpenSIPS Bootcamp 2018<o:p></o:p></pre>
<pre> <a href="http://opensips.org/training/OpenSIPS_Bootcamp_2018/">http://opensips.org/training/OpenSIPS_Bootcamp_2018/</a><o:p></o:p></pre>
<div>
<p class="MsoNormal">On 11/06/2018 10:14 PM, Ben Newlin wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="font-size:11.0pt">Bogdan,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I am trying to obtain this information for you but I am having trouble getting the core files. Is it really necessary to kill every opensips process? This generates almost 40 core files and each is quite large
(~1GB). I simply don’t have that disk space currently. I can make a change to get more but it is slowing the process. Would it be sufficient to get just one core file?</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Also, runtime inspection with gdb is possible in this case if you can provide me with the commands you would want to see. I would need very specific commands as I am not very familiar with gdb.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">Ben Newlin </span>
<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">Bogdan-Andrei Iancu
<a href="mailto:bogdan@opensips.org"><bogdan@opensips.org></a><br>
<b>Date: </b>Thursday, November 1, 2018 at 1:29 PM<br>
<b>To: </b>Ben Newlin <a href="mailto:Ben.Newlin@genesys.com"><Ben.Newlin@genesys.com></a>, OpenSIPS users mailling list
<a href="mailto:users@lists.opensips.org"><users@lists.opensips.org></a><br>
<b>Subject: </b>Re: [OpenSIPS-Users] CPU 100% with TCP</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
</div>
<p class="MsoNormal"><tt><span style="font-size:10.0pt">Hi Ben,</span></tt><span style="font-size:10.0pt;font-family:"Courier New",serif"><br>
<br>
<tt>First be sure you have the DBG_LOCK option compiled in. Do the "opensips -V" and see the output flags.</tt><br>
<br>
<tt>Next step will be to force an SIGSEGV to opensips (killall -11 opensips) when the deadlock occurs - I need a core file to inspect (assuming that runtime inspection with gdb is not possible).</tt><br>
<br>
<tt>Regards,</tt><br>
<br>
<br>
<br>
</span><o:p></o:p></p>
<pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
<pre> <o:p></o:p></pre>
<pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
<pre> <a href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a><o:p></o:p></pre>
<pre>OpenSIPS Bootcamp 2018<o:p></o:p></pre>
<pre> <a href="http://opensips.org/training/OpenSIPS_Bootcamp_2018/">http://opensips.org/training/OpenSIPS_Bootcamp_2018/</a><o:p></o:p></pre>
<div>
<p class="MsoNormal">On 10/31/2018 09:07 PM, Ben Newlin wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="font-size:11.0pt">Bogdan,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">For the first test I have done as you suggested and disabled only async operation for HEP, so it is still using TCP. I will send you the trap info directly as it is too large. I also compiled with the DBG_LOCK
option, but am unsure whether that extra information will be available in the trap output or do you need something else?</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I am now going to switch HEP to use UDP to mirror our production environment and try to reproduce again. Wish me luck!
</span><span style="font-size:11.0pt;font-family:"Apple Color Emoji"">☺</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">Ben Newlin </span>
<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">Bogdan-Andrei Iancu
<a href="mailto:bogdan@opensips.org"><bogdan@opensips.org></a><br>
<b>Date: </b>Monday, October 29, 2018 at 2:19 PM<br>
<b>To: </b>Ben Newlin <a href="mailto:Ben.Newlin@genesys.com"><Ben.Newlin@genesys.com></a>, OpenSIPS users mailling list
<a href="mailto:users@lists.opensips.org"><users@lists.opensips.org></a><br>
<b>Subject: </b>Re: [OpenSIPS-Users] CPU 100% with TCP</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
</div>
<p class="MsoNormal">Hi Ben,<br>
<br>
I checked the error trace and it should not leave any dangling lock (due mishandled error). Before disabling HEP, try to disable the async support for HEP.<br>
<br>
If you claim that the same 100% CPU happens with HEP + UDP, send me a trap for that too, as in the previous case, the deadlock was exclusively HEP + TCP related.
<br>
<br>
Anyhow, as the original trap showed a deadlock, next step will be to recompile with the DBG_LOCK option - this enables extra code to debug/troubleshoot locking related issues - are you able to do it?<br>
<br>
Regards,<br>
<br>
<br>
<br>
<br>
<o:p></o:p></p>
<pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
<pre> <o:p></o:p></pre>
<pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
<pre> <a href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a><o:p></o:p></pre>
<pre>OpenSIPS Bootcamp 2018<o:p></o:p></pre>
<pre> <a href="http://opensips.org/training/OpenSIPS_Bootcamp_2018/">http://opensips.org/training/OpenSIPS_Bootcamp_2018/</a><o:p></o:p></pre>
<div>
<p class="MsoNormal">On 10/26/2018 04:14 PM, Ben Newlin wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="font-size:11.0pt">Bogdan,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Actually, yes we do. Looking back I can see these errors just before the issue occurs:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New",serif">Oct 24 19:00:36 [5700] ERROR:proto_hep:send_hep_message: Cannot send hep message!</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New",serif">Oct 24 19:00:36 [5700] ERROR:proto_hep:msg_send: send() to 10.32.163.211:9061 for proto hep_tcp/9 failed</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New",serif">Oct 24 19:00:36 [5700] ERROR:proto_hep:hep_tcp_send: failed to send</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New",serif">Oct 24 19:00:36 [5700] ERROR:proto_hep:async_tsend_stream: Failed first TCP async send : (32) Broken pipe</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I will try disabling HEP and see if we can reproduce.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Just for information, I have been reproducing the issue in our testing environment which uses TCP for HEP, however the issue is occurring in our production environment as well which is still using UDP for
HEP.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">Ben Newlin </span>
<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">Bogdan-Andrei Iancu
<a href="mailto:bogdan@opensips.org"><bogdan@opensips.org></a><br>
<b>Date: </b>Friday, October 26, 2018 at 3:06 AM<br>
<b>To: </b>Ben Newlin <a href="mailto:Ben.Newlin@genesys.com"><Ben.Newlin@genesys.com></a>, OpenSIPS users mailling list
<a href="mailto:users@lists.opensips.org"><users@lists.opensips.org></a><br>
<b>Subject: </b>Re: [OpenSIPS-Users] CPU 100% with TCP</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
</div>
<p class="MsoNormal"><tt><span style="font-size:10.0pt">Hi Ben,</span></tt><span style="font-size:10.0pt;font-family:"Courier New",serif"><br>
<br>
<tt>Thank you for the info.</tt><br>
<br>
<tt>It looks like the processes get stuck into a HEP related internal lock - do you see any HEP related errors in your logs, prior to the dead-lock ?</tt><br>
<br>
<tt>Also, as PoC, could you disabled HEP tracing to see if the problem goes away ?</tt><br>
<br>
<tt>Thanks,</tt><br>
<br>
<br>
<br>
<br>
<br>
<br>
</span><o:p></o:p></p>
<pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
<pre> <o:p></o:p></pre>
<pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
<pre> <a href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a><o:p></o:p></pre>
<pre>OpenSIPS Bootcamp 2018<o:p></o:p></pre>
<pre> <a href="http://opensips.org/training/OpenSIPS_Bootcamp_2018/">http://opensips.org/training/OpenSIPS_Bootcamp_2018/</a><o:p></o:p></pre>
<div>
<p class="MsoNormal">On 10/24/2018 10:18 PM, Ben Newlin wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="font-size:11.0pt">Bogdan,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I have run the command but the output was too large for pastebin so I have sent it to you directly.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">Ben Newlin </span>
<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">Bogdan-Andrei Iancu
<a href="mailto:bogdan@opensips.org"><bogdan@opensips.org></a><br>
<b>Date: </b>Wednesday, October 24, 2018 at 5:17 AM<br>
<b>To: </b>OpenSIPS users mailling list <a href="mailto:users@lists.opensips.org">
<users@lists.opensips.org></a>, Ben Newlin <a href="mailto:Ben.Newlin@genesys.com">
<Ben.Newlin@genesys.com></a><br>
<b>Subject: </b>Re: [OpenSIPS-Users] CPU 100% with TCP</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
</div>
<p class="MsoNormal"><tt><span style="font-size:10.0pt">Hi Ben,</span></tt><span style="font-size:10.0pt;font-family:"Courier New",serif"><br>
<br>
<tt>Could you run "opensipsctl trap" ?</tt><br>
<br>
<tt>Regards,</tt><br>
<br>
<br>
<br>
<br>
<br>
<br>
</span><o:p></o:p></p>
<pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
<pre> <o:p></o:p></pre>
<pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
<pre> <a href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a><o:p></o:p></pre>
<pre>OpenSIPS Bootcamp 2018<o:p></o:p></pre>
<pre> <a href="http://opensips.org/training/OpenSIPS_Bootcamp_2018/">http://opensips.org/training/OpenSIPS_Bootcamp_2018/</a><o:p></o:p></pre>
<div>
<p class="MsoNormal">On 10/24/2018 12:56 AM, Ben Newlin wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span style="font-size:11.0pt">Hi,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">We have implemented TCP recently and are performing TCP<->UDP translation on one of our proxy types. This proxy only exists for that purpose; there are no DB queries, REST calls, or anything like that. It
is designed to be very fast and high throughput.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Recently we have found that when the remote endpoint of a TCP connection is lost, i.e. the server goes down, while under moderate load OpenSIPS quickly reaches 100% CPU and becomes unresponsive. When this
occurs, the “top” command shows that between 30-90% CPU is in System (kernel) space, and each OpenSIPS TCP process shows many times the normal CPU. We are running OpenSIPS 2.4.2 on Amazon Linux.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I obtained as much information as I could using ps, strace, and gdb here:
<a href="https://pastebin.com/JP3DnCqs">
https://pastebin.com/JP3DnCqs</a>. We can reproduce the failure consistently by removing a server during call traffic.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">A few things I noticed:</span><o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo3"><span style="font-size:11.0pt">The number of running threads reported by OpenSIPS doesn’t align with our configuration, copied here:</span>
<o:p></o:p></li></ul>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">####### Global Parameters #########</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">children=32</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">#// Allow 503 to pass back to Control</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">disable_503_translation=yes</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">#// Even though we are not receiving HEP,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">#// this listener is required by OpenSIPS</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">#// in order to use the proto_hep module. :/</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">listen=hep_tcp:10.32.40.245:9061 use_children 1</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">#// Configure the listeners</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">listen=udp:10.32.40.245:5060 as XXX.XXX.XXX.XXX</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">listen=tcp:10.32.40.245:5060 as XXX.XXX.XXX.XXX</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">#// Transaction Module</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">loadmodule "tm.so"</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">modparam("tm", "restart_fr_on_each_reply", 0)</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">modparam("tm", "timer_partitions", 8)</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">modparam("tm", "onreply_avp_mode", 1)</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Courier New",serif">modparam("tm", "wt_timer", 10)</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoListParagraph"><span style="font-size:11.0pt">According to the documentation if “tcp_children” is not set then the value of “children” will be used [1], but we have set “children” to 32 and only have the default 8 TCP processes. Also we appear
to only have 1 timer process, although we have set the number of timer partitions to 8.</span><o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo3"><span style="font-size:11.0pt">The server that is terminated was using TCP connections exclusively, but all of the CPU seems to be in the UDP threads. The one I looked at appeared
to be handling a CANCEL to one of the calls that was active and was attempting to send it out via TCP. I’m not sure why it would be trying to relay the CANCEL as no 100 Trying had been received from the server. I have noticed that in 2.x OpenSIPS will now
send CANCELs for transactions even when 100 Trying was not received. Is that intentional? RFC 3261 states that no CANCEL should be sent unless a provisional response has been received.</span>
<o:p></o:p></li></ul>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Any assistance with this would be appreciated.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">[1] - <a href="http://www.opensips.org/Documentation/Script-CoreParameters-2-4#toc66">
http://www.opensips.org/Documentation/Script-CoreParameters-2-4#toc66</a></span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">Ben Newlin </span>
<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
</span><o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Users mailing list<o:p></o:p></pre>
<pre><a href="mailto:Users@lists.opensips.org">Users@lists.opensips.org</a><o:p></o:p></pre>
<pre><a href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a><o:p></o:p></pre>
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