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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hello Albert,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">4.4.7 is over three years old. Before you invest more time in this issue, I would suggest that you update to a maintained version (e.g. 5.4.x or 5.5.x).
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">There have been many extensions to the code base and also bug fixes to since this time.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">The numbers from the memory debugging below basically list the allocated memory from these functions. They should normally not grow endless.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">There are also ways to output information to the log file, described e.g. here:
<a href="http://www.kamailio.org/wiki/tutorials/troubleshooting/memory">http://www.kamailio.org/wiki/tutorials/troubleshooting/memory</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Henning<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">-- <o:p>
</o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Henning Westerholt –
</span><span style="mso-fareast-language:EN-US"><a href="https://skalatan.de/blog/"><span lang="EN-GB" style="color:#0563C1">https://skalatan.de/blog/</span></a></span><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Kamailio services –
</span><span style="mso-fareast-language:EN-US"><a href="https://gilawa.com/"><span lang="EN-GB" style="color:#0563C1">https://gilawa.com</span></a></span><span style="mso-fareast-language:EN-US">
<span lang="EN-GB"><o:p></o:p></span></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><b>From:</b> Albert Petit <albertpetit@gmail.com>
<br>
<b>Sent:</b> Monday, September 13, 2021 10:34 PM<br>
<b>To:</b> Henning Westerholt <hw@skalatan.de><br>
<b>Cc:</b> Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>; SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing List <sr-users@lists.sip-router.org><br>
<b>Subject:</b> Re: [SR-Users] Question about suspected memory leak presence module<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt">hi<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt">using kamailio 4.4.7 on that environment<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt">i will try to run some test locally simulating reception of a lot presence subscription and observe <span style="font-family:"Arial",sans-serif">mem_copy_subs_noc(), </span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-family:"Arial",sans-serif">Just to understand, </span>both mem_copy_subs_noc are not expected to increase, is that right? What do they exactly mean?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-family:"Arial",sans-serif">Thanks</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt">On Sat, 11 Sep 2021, 22:22 Henning Westerholt, <<a href="mailto:hw@skalatan.de" target="_blank">hw@skalatan.de</a>> wrote:<o:p></o:p></p>
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Hello,<o:p></o:p></p>
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<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="EN-GB">the output below indicates the memory allocated in the individual functions. So it seems that the mem_copy_subs_noc() function allocates a lot of memory. It is increasing over time? The final output looks like a wrapping error, the counter
goes negative.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="EN-GB">Which version of Kamailio do you use on the</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="EN-GB">server?</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="EN-GB">Cheers,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="EN-GB">Henning</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="EN-GB"> </span><o:p></o:p></p>
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<span lang="EN-GB">-- </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="EN-GB">Henning Westerholt – </span><a href="https://skalatan.de/blog/" target="_blank"><span lang="EN-GB" style="color:#0563C1">https://skalatan.de/blog/</span></a><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="EN-GB">Kamailio services – </span><a href="https://gilawa.com/" target="_blank"><span lang="EN-GB" style="color:#0563C1">https://gilawa.com</span></a>
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:35.4pt">
<span lang="EN-GB"> </span><o:p></o:p></p>
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<b>From:</b> sr-users <<a href="mailto:sr-users-bounces@lists.kamailio.org" target="_blank">sr-users-bounces@lists.kamailio.org</a>>
<b>On Behalf Of </b>Albert Petit<br>
<b>Sent:</b> Thursday, September 9, 2021 11:42 PM<br>
<b>To:</b> SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing List <<a href="mailto:sr-users@lists.sip-router.org" target="_blank">sr-users@lists.sip-router.org</a>><br>
<b>Subject:</b> [SR-Users] Question about suspected memory leak presence module<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
Hi,<o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
I am suspecitng presence module might be having a memory leak on a production server used by an end user (not have access to it).<o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
The output of command kamcmd mod.stats presence shm is<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
Module: presence<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
{<o:p></o:p></p>
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mem_copy_subs(148): 25720<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
mem_copy_subs_noc(214): 1672201904<o:p></o:p></p>
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mem_copy_subs_noc(251): 678406560<o:p></o:p></p>
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add_event(181): 88<o:p></o:p></p>
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shm_copy_event(57): 40<o:p></o:p></p>
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shm_copy_event(50): 312<o:p></o:p></p>
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add_event(156): 40<o:p></o:p></p>
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add_event(149): 456<o:p></o:p></p>
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new_shtable(66): 5767168<o:p></o:p></p>
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new_shtable(53): 262144<o:p></o:p></p>
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init_evlist(289): 16<o:p></o:p></p>
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Total: -1938302848<o:p></o:p></p>
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}<o:p></o:p></p>
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<o:p></o:p></p>
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I am not sure what mem_copy_subs_noc is meaning. And final output is negative, SHM is incfreasing all the time but not sure of the root cause<o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
is this a reasonable hint that a memory leak is related to presence?<o:p></o:p></p>
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