<div dir="ltr">Are you using NFS? Any ODBC connections?</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 21, 2020 at 10:23 AM Stefan Viljoen <<a href="mailto:viljoens@verishare.co.za">viljoens@verishare.co.za</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi all<br>
<br>
I'm running an Asterisk on an Intel XEON E5-2660 virtual with Centos 7 -<br>
32GB RAM. <br>
When I approach about 320 channels, I -sometimes- get thousands of these<br>
messages suddenly streamed in the CLI / Asterisk log:<br>
<br>
WARNING[60753][C-00022cb9] channel.c: Exceptionally long voice queue length<br>
queuing to Local/xxxxxxxxxx@local-0002dbea;2<br>
WARNING[71993][C-00022dcc] channel.c: Exceptionally long voice queue length<br>
queuing to Local/xxxxxxxxxx@local-0002dd10;2<br>
WARNING[72848][C-00022dd1] channel.c: Exceptionally long voice queue length<br>
queuing to Local/xxxx@local-0002dd30;1<br>
<br>
Top reports system load as 30.0, but the box is still very responsive over<br>
SSH. Asterisk is shown as consuming 600% CPU when NOT in this state (but<br>
close to it) and doesn't consume more as this state comes into effect.<br>
<br>
Top also shows that HT CPU instances are idle 40% of their time.<br>
<br>
What then happens when these messages appear is Asterisk stops accepting<br>
originates on the AMI, and that no CDRs write through to the CDR DB anymore<br>
- MySQL itself is idle and has no locks or running inserts indicated in<br>
"show processlist" in MySQL CLI.<br>
<br>
The Asterisk instance will then effectively freeze, never hanging up<br>
terrminated calls, and never allowing new cals to start, keeping around 320<br>
channels open, forever.<br>
<br>
Thing is I can sometimes peak at over 350 channels, then come back down as<br>
answers, hangups, etc. take place - no problem. But -sustaining- more than<br>
320 channels over a two or three minutes seems to reliably cause the above<br>
to happen.<br>
<br>
Asterisk has to be kill -9'ed to get it restarted, it ignores kill -1 /<br>
sighup / cli "core stop now"<br>
<br>
CLI does work and is still repsonsive in this state, until I do a "core stop<br>
now", which doesn't stop the instance even after 20 to 30 minutes.<br>
<br>
Asterisk max load is set to 40 and max calls to 350.<br>
<br>
Any idea what I can look at? Any tips for running specifically 13 under high<br>
load?<br>
<br>
Thanks<br>
<br>
Stefan<br>
<br>
<br>
<br>
<br>
<br>
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