<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: courier new,courier,monaco,monospace,sans-serif; font-size: 12pt; color: #000000'>Hello Bogdan,<div>After we doing more testing with auto scaling we observed issue with TCP, where opensips try scale down the processes it tear down them and break TCP connections with end points and that cause blocked connection state where opensips stops process TCP connections.</div><div><br></div><div>volga629 <br><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Slava Bendersky" <volga629@networklab.ca><br><b>To: </b>"Bogdan-Andrei Iancu" <bogdan@opensips.org><br><b>Cc: </b>"OpenSIPS users mailling list" <users@lists.opensips.org><br><b>Sent: </b>Wednesday, March 13, 2019 12:21:14 AM<br><b>Subject: </b>Re: [OpenSIPS-Users] auto scaling<br><br><style>p { margin: 0; }</style><div style="font-family: courier new,courier,monaco,monospace,sans-serif; font-size: 12pt; color: #000000">I will do pull today.<div><br></div><div>volga629<br><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Bogdan-Andrei Iancu" <bogdan@opensips.org><br><b>To: </b>"Slava Bendersky" <volga629@networklab.ca><br><b>Cc: </b>"OpenSIPS users mailling list" <users@lists.opensips.org><br><b>Sent: </b>Tuesday, March 12, 2019 4:52:06 AM<br><b>Subject: </b>Re: [OpenSIPS-Users] auto scaling<br><br>
<tt>Slava,<br>
<br>
Have you pulled my change on the improved log (just update from
master) ? and post here the new output you get for the error.<br>
<br>
Thanks,<br>
</tt>
<pre class="moz-signature">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="https://www.opensips-solutions.com" target="_blank">https://www.opensips-solutions.com</a>
OpenSIPS Summit 2019
<a class="moz-txt-link-freetext" href="https://www.opensips.org/events/Summit-2019Amsterdam/" target="_blank">https://www.opensips.org/events/Summit-2019Amsterdam/</a>
</pre>
<div class="moz-cite-prefix">On 03/12/2019 05:51 AM, Slava Bendersky
wrote:<br>
</div>
<blockquote cite="mid:423067196.274.1552362703793.JavaMail.bendersky@nlws01.networklab.lan">
<style>p { margin: 0; }</style>
<div style="font-family: courier
new,courier,monaco,monospace,sans-serif; font-size: 12pt; color:
#000000">Hello Bogdan,
<div>My question how to calculate correctly </div>
<div><br>
</div>
<div><b>tcp_workers</b></div>
<div><b>udp_workers</b></div>
<div><b><br>
</b></div>
<div>to properly assign with in auto scaling profile. Which
parameters need use as base ?</div>
<div><br>
</div>
<div>As example if vm 4GB memory up what will be max number for
scale up processes and what should be value for tcp and udp
workers.</div>
<div>It message is appear in log on first attempt to fork in
scale up.</div>
<div><br>
</div>
<div>volga629 </div>
<div> </div>
<div>
<hr id="zwchr">
<div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From:
</b>"Bogdan-Andrei Iancu" <a class="moz-txt-link-rfc2396E" href="mailto:bogdan@opensips.org" target="_blank"><bogdan@opensips.org></a><br>
<b>To: </b>"OpenSIPS users mailling list"
<a class="moz-txt-link-rfc2396E" href="mailto:users@lists.opensips.org" target="_blank"><users@lists.opensips.org></a>, "Slava Bendersky"
<a class="moz-txt-link-rfc2396E" href="mailto:volga629@networklab.ca" target="_blank"><volga629@networklab.ca></a><br>
<b>Sent: </b>Monday, March 11, 2019 4:44:57 AM<br>
<b>Subject: </b>Re: [OpenSIPS-Users] auto scaling<br>
<br>
<tt>Hi Slava,<br>
<br>
Based on the OpenSIPS logs, did you get that error on the
first forking attempt or sometime later after some number
of new tcp processes forking ? More or less, my question
is : what was the process creation/termination history
before getting that bug log ?<br>
<br>
Also I just pushed a small commit to improve the date
provided by the bug log.<br>
<br>
In regards to the "not clear how to calculate"...could you
be specific ?<br>
<br>
Best regards,<br>
</tt>
<pre class="moz-signature">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="https://www.opensips-solutions.com" target="_blank">https://www.opensips-solutions.com</a>
OpenSIPS Summit 2019
<a class="moz-txt-link-freetext" href="https://www.opensips.org/events/Summit-2019Amsterdam/" target="_blank">https://www.opensips.org/events/Summit-2019Amsterdam/</a>
</pre>
<div class="moz-cite-prefix">On 03/10/2019 05:12 PM, Slava
Bendersky wrote:<br>
</div>
<blockquote cite="mid:1387008888.101.1552230768174.JavaMail.bendersky@nlws01.networklab.lan">
<style>p { margin: 0; }</style>
<div style="font-family: courier
new,courier,monaco,monospace,sans-serif; font-size:
12pt; color: #000000"><font face="courier new, courier,
monaco, monospace, sans-serif"><span style="font-size:
12pt;">Hello Everyone,</span></font>
<div style="color: rgb(0, 0, 0); font-family:
"courier new", courier, monaco, monospace,
sans-serif; font-size: 12pt;">Trying test auto scaling
feature with following config</div>
<div style="color: rgb(0, 0, 0); font-family:
"courier new", courier, monaco, monospace,
sans-serif; font-size: 12pt;"><br>
</div>
<div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif">auto_scaling_profile =
PRF_SIP</font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif"> scale up to 24 on 70%
for 4 cycles within 5</font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif"> scale down to 4 on 20%
for 8 cycles</font></div>
</div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif"><br>
</font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif">On box 4096 Mb memory and 4
virtual CPU</font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif"><br>
</font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif">Getting in log </font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif"><br>
</font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif">CRITICAL:core:fork_dynamic_tcp_process:
#012>>> trying to fork one more TCP worker
but no free slots in the TCP table#012#012It seems
you have hit a programming bug.#012Please help us
make OpenSIPS better by reporting it at <a class="moz-txt-link-freetext" href="https://github.com/OpenSIPS/opensips/issues" target="_blank">https://github.com/OpenSIPS/opensips/issues</a></font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif"><br>
</font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif"><br>
</font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif"><b>Not clear how to calculate
workers for tcp or udp</b></font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif"><br>
</font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif"><b>tcp_workers=10</b>
use_auto_scaling_profile PRF_SIP </font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif"><b>listen=udp:lan_ip:5060</b>
use_auto_scaling_profile PRF_SIP</font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif"><br>
</font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif"><br>
</font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif">
<div>[root@vprx00 ~]# opensips -V</div>
<div>version: opensips 3.0.0-dev (x86_64/linux)</div>
<div>flags: STATS: On, SHM_EXTRA_STATS,
DISABLE_NAGLE, USE_MCAST, SHM_MMAP, PKG_MALLOC,
QM_MALLOC, DBG_MALLOC, FAST_LOCK-ADAPTIVE_WAIT</div>
<div>ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE
262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE
65535</div>
<div>poll method support: poll, epoll, sigio_rt,
select.</div>
<div>main.c compiled on 10:06:47 Mar 7 2019 with
gcc 8</div>
<div><br>
</div>
<div><br>
</div>
</font></div>
<div><font face="courier new, courier, monaco,
monospace, sans-serif">volga629</font></div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
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</pre>
</blockquote>
<br>
</div>
</div>
</div>
</blockquote>
<br>
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