[asterisk-bugs] [JIRA] (ASTERISK-29232) Memory Leak since 16.13.0

[Luke Escude (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-29232?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=253294#comment-253294 ] 

Luke Escude commented on ASTERISK-29232:
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This looks interesting: https://github.com/asterisk/asterisk/commit/e1fd51cd2c183a3eb61803f52277d1a7d7a18c9c#diff-be39ef79e09077566ea704aaf08be25863d2a3a3fd5a7820cffcf37bc2df16f0

I did notice res_pjsip_outbound_registration.c is growing in size too.... Outbound registrations makes up 100% of Asterisk's communication with the outside world for us - It registers to SBCs which have public IPs of course, which pass customer devices through those same sockets in the other direction. This enables us to run hundreds of Asterisk instances behind NAT without ever having to open ports.

I'll stop blowing this ticket up, and will perform another comparison tomorrow after 12 hours.

> Memory Leak since 16.13.0
> -------------------------
>
>                 Key: ASTERISK-29232
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-29232
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Core/PBX
>    Affects Versions: 16.15.0
>         Environment: CentOS 7 x64
>            Reporter: Luke Escude
>            Assignee: Unassigned
>         Attachments: cw1-memchart.png, Jan6-1401.csv, nw1-memchart.png, PW3-Memchart.png
>
>
> So we have around 100 instances of Asterisk 16.13.0 that have been running for over 2 months, normal load (small businesses with less than 30 users each), without issue.
> We have another 350 instances of Asterisk 16.15.0 that we've started seeing a very linear increase in memory consumption over time. Specifically, we see higher-load instances (150+ users) last only a few days before hitting our artificial 3GB ceiling and getting restarted by the OOM killer.
> There are very few differences in our implementation of the 16.13 and 16.15 versions. All versions are set up as the following:
> - CentOS 7 64-bit
> - Voicemail over ODBC
> - unixODBC 2.3.1
> - MariaDB Connector (instead of the crappy mysql connector)
> - CDR over MySQL
> - SIP Trunks are registered every 2 minutes, qualified every 15 seconds.
> - User devices register every 10 minutes, qualified every 15 seconds.
> - User devices connect via TCP more often than UDP.
> - I have NO pjsip threadpool configuration options defined. I think the default is 50 threads?
> Here is what I am about to test within the next week:
> 1. unixODBC updated to 2.3.9
> 2. Longer SIP Trunk Registration period - Maybe PJSIP is working too hard?
> 3. Longer qualify timeout - Maybe PJSIP is working too hard?
> One of my first questions: Is it SAFE to compile asterisk with MALLOC_DEBUG and just leave it on permanently? I am scared to enable it, and suddenly have a bunch of users that are experiencing issues because I've enabled something that should only be enabled in Dev.
> Sorry for the length of the post, trying to cover as much ground as possible.



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