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List: sr-dev
Subject: Re: [sr-dev] Fwd: [SR-Users] SIGUSR1 for memory status not working as documented - only one process
From: Alex_Villacís_Lasso <a_villacis () palosanto ! com>
Date: 2014-07-31 18:13:38
Message-ID: 53DA8752.3000804 () palosanto ! com
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El 31/07/14 10:47, Alex Villacís Lasso escribió:
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> From: Alex Villacís Lasso <a_villacis@palosanto.com>
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> To: Kamailio (SER) - Users Mailing List <sr-users@lists.sip-router.org>
> Subject: [SR-Users] SIGUSR1 for memory status not working as documented - only one \
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> I am trying to track down a memory leak that was triggered by a patch I wrote for \
> my local copy of kamailio 4.1.4 . For this, I am following the documentation \
> athttp://www.kamailio.org/dokuwiki/doku.php/troubleshooting:memory . This page \
> claims that once memlog is set in the configuration file, a kamailio process will \
> dump a report of the allocation map when shutting down, or when receiving a \
> SIGUSR1. I have configured my kamailio.cfg with memlog=1 and no other change, and I \
> see the memory report on shutdown for all processes. However, when I send a SIGUSR1 \
> to a kamailio process, the process does absolutely nothing, with the exception of \
> the first kamailio process (the one reported as Type=attendant by "kamctl ps"). All \
> of the other processes just ignore SIGUSR1. What is going on? It is inconvenient to \
> force a shutdown of all the kamailio processes just to get the memory report.
From examination of the source code, I see that the disabling of memory dumps on \
SIGUSR1 for child processes other than the main one is not a bug, but a design \
decision. Why?
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<div class="moz-cite-prefix">El 31/07/14 10:47, Alex Villací­s Lasso
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<td>[SR-Users] SIGUSR1 for memory status not working as
documented - only one process reports back</td>
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<pre>I am trying to track down a memory leak that was triggered by a patch I \
wrote for my local copy of kamailio 4.1.4 . For this, I am following the \
documentation at <a moz-do-not-send="true" class="moz-txt-link-freetext" \
href="http://www.kamailio.org/dokuwiki/doku.php/troubleshooting:memory">http://www.kamailio.org/dokuwiki/doku.php/troubleshooting:memory</a> \
. This page claims that once memlog is set in the configuration file, a kamailio \
process will dump a report of the allocation map when shutting down, or when \
receiving a SIGUSR1. I have configured my kamailio.cfg with memlog=1 and no other \
change, and I see the memory report on shutdown for all processes. However, when I \
send a SIGUSR1 to a kamailio process, the process does absolutely nothing, with the \
exception of the first kamailio process (the one reported as Type=attendant by \
"kamctl ps"). All of the other processes just ignore SIGUSR1. What is going on? It \
is inconvenient to force a shutdown of all the kamailio processes just to get the \
memory report.
</pre>
</div>
</blockquote>
<br>
From examination of the source code, I see that the disabling of
memory dumps on SIGUSR1 for child processes other than the main one
is not a bug, but a design decision. Why?<br>
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