Incorrect streaming sources or settings in the MoH custom application can cause increased warning messages in asterisk CLI as well as in the full log. Messages have a format similar to this one
[2017-10-19 12:10:42] WARNING[19746]: res_musiconhold.c:719 monmp3thread: poll() failed: Interrupted system call
This may not apply to Asterisk 16+ where they reworked some of the audio handling but that may need to be confirmed by @jcolp or @mfredrickson maybe
Thanks for the heads up guys. I’ll look further into this and make corrections if there’s a chance of this leading to any issues.
Update: As @jfinstrom correctly noted, this setup can lead to issues, so this is not recommended for production systems. Disclaimers have been added to the blog post.