[asterisk-users] constantly increasing load in Asterisk 11.14

Gareth Blades mailinglist+asterisk at dns99.co.uk
Thu Feb 5 05:52:19 CST 2015

On 05/02/15 10:53, Sebastian Damm wrote:
> Hi,
> we have quite a few Asterisk machines running and try to keep them on 
> a current version of the Asterisk 11 branch. But since we upgraded to 
> 11.14.0 a couple weeks ago, we have to restart the Asterisk process 
> every week because the load gets too high and our monitoring complains.
> Those machines are doing only SIP-to-SIP call relay, the dialplan is 
> quite complex, transcoding is done only on a few percent of the calls 
> processed. During the daytime, there are at max around 200 SIP 
> channels (100 calls) running at the same time. After one week, one 
> machine has processed about 170k calls.
> I have uploaded a comparison of cacti load graphs for one week of a 
> machine running with 11.14.0 and one running with 11.6.0: 
> http://pbrd.co/1v0SO3R
> As you can see, after a restart, both machines have about the same 
> load. But after the really quiet weekend, the 11.14 Asterisk starts 
> the new week with a much higer load than the 11.6 Asterisk, where it 
> stays constant. We've had an 11.5.1 machine running for about half a 
> year without the need of restarting, but right now, this is not possible.
> Has anyone seen this before? Or does anyone know a reason, what change 
> somewhere between 11.6 and 11.14 could cause this behaviour? It looks 
> like we have to go back to 11.6.
We see it in the certified version which is currently 11.6. We have 
about 50% higher call volume on our servers than yourselves and it does 
take about 3-4 months for the load to reach about 5. I don't know what 
causes it but we take the servers out of our load balancing and restart 
asterisk every few months and this returns the load to normal.

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