[asterisk-bugs] [JIRA] (ASTERISK-22541) Very high CPU usage on Asterisk 11.5.1

[JoshE (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-22541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=210320#comment-210320 ] 

JoshE edited comment on ASTERISK-22541 at 9/17/13 8:57 AM:
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Just a couple quick comments.  Not sure I'll be able to repro in a production scenario very quickly, but I'm looking at ways to load test this.  The easier questions to answer:
 
1) 100% SIP.  No other channel drivers are being used - most are not even compiled.

2) Everything is SIP-SIP calling and largely transcoded from G.729 on one leg to G.711u on the other.  No differences in functionality between the configurations on those two versions.

3) Recording is used on < 10% of calls.  System is definitely not disk IO bound at this point.

Working on the backtrace and logs from the loaded period - but at first glance, nothing was abnormal except for the high CPU usage and complaints about very poor call quality.
                
      was (Author: n8ideas):
    Just a couple quick comments.  Not sure I'll be able to repro in a production scenario very quickly, but I'm looking at ways to load test this.  The easier questions to answer:
 
1) 100% SIP.  No other channel drivers are being used - most are not even compiled.

2) Everything is SIP-SIP calling and largely transcoded from G.729 on one leg to G.711u on the other.  No differences in functionality between the configurations on those two versions.

3) Recording is used on < 10% of calls.  System is definitely not IO bound at this point.

Working on the backtrace and logs from the loaded period - but at first glance, nothing was abnormal except for the high CPU usage and complaints about very poor call quality.
                  
> Very high CPU usage on Asterisk 11.5.1
> --------------------------------------
>
>                 Key: ASTERISK-22541
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22541
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>    Affects Versions: 11.5.1
>            Reporter: JoshE
>            Assignee: JoshE
>
> Not sure exactly best way to reproduce, but upgraded Asterisk 11.4.0 to 11.5.1 and immediately saw a 10x spike in CPU usage, with no other changes to the system itself.
> System has around 800 peers and 30-50 concurrent bridged calls.  Under even moderate load, the 11.5.1 system spiked to 2 full cores, where before it was running about 20% of one core.
> Reverting the system caused everything to go back to normal.

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