[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=256777#comment-256777 ] 

Luke Escude commented on ASTERISK-29232:
----------------------------------------

Correct, 16.20.

The customer had about 300 SIP devices registered to Asterisk, and placed around 3,000 to 4,000 calls over the 12-hour period.

I said "OOM killer" but I meant Docker's memory limit - It's set to a 3GB ceiling, and when the physically occupied memory reaches 3GB docker will kill the container and restart it. 

16GB of memory is available on the Docker host. Typically Asterisk, even with 300 extensions registered, doesn't need more than like 800MB of memory in my experience. Even less actually.

Looking at my git commits around the time I started noticing the issue, that was also when I refactored our phone-facing proxy servers. This refactor included the unnecessary record_route() in SUBSCRIBEs and NOTIFYs. Since no one else is reporting this in other Asterisk issues, I'm beginning to think I've caused this. 

> 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, 16.20.0
>         Environment: CentOS 7 x64
>            Reporter: Luke Escude
>            Assignee: Luke Escude
>            Severity: Major
>              Labels: fax
>         Attachments: Analysis.xlsx, Apex-Analysis.xlsx, 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.



--
This message was sent by Atlassian JIRA
(v6.2#6252)