[asterisk-users] Exceptionally long queue length queuing

[Joshua C. Colp]

On Sun, Jun 28, 2020 at 2:26 PM Dovid Bender <dovid at telecurve.com> wrote:

> Hi,
>
> We have a box up and we are starting to see a lot of "Exceptionally long
> queue length queuing" in the logs. From all the research so far it seems
> like this leads to their systems crashing and being unreachable. In our
> case the box remains up and takes calls. We are running Asterisk 16.6.1. We
> are using MusicOnHold to play online music streams via ffmpeg. Any idea on
> how to troubleshoot this further to see why this is happening?
>

The message occurs when either a channel is deadlocked or the processing
time to handle what a channel is doing is substantial, and things build up.
Getting a backtrace[1] at the time it occurs will show what the system is
actually doing and can provide insight into what is causing it.

[1]
https://wiki.asterisk.org/wiki/display/AST/Getting+a+Backtrace#GettingaBacktrace-Runningast_coredumperfordeadlocks,taskprocessorbackups,etc
.

-- 
Joshua C. Colp
Asterisk Technical Lead
Sangoma Technologies
Check us out at www.sangoma.com and www.asterisk.org
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