[asterisk-users] Exceptionally long queue length queuing

Joshua C. Colp jcolp at sangoma.com
Mon Jun 29 05:45:29 CDT 2020

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.


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