[asterisk-bugs] [JIRA] Created: (ASTERISK-20496) Patch to app_voicemail.c for large vmblasts

[Bob Roswell (JIRA)]

Patch to app_voicemail.c for large vmblasts
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                 Key: ASTERISK-20496
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20496
             Project: Asterisk
          Issue Type: Improvement
      Security Level: None
          Components: Applications/app_voicemail
    Affects Versions: 1.8.13.1
         Environment: PIAF Installed Version   = 2.0.6.2 under *HARDWARE*                │
                                                          │  FreePBX Version          = 2.10.1.2                                │
                                                          │  Running Asterisk Version = 1.8.13.0                                │
                                                          │  Asterisk Source Version  = 1.8.13.0 *MODIFIED*                     │
                                                          │  Dahdi Source Version     = 2.6.1+2.6.1                             │
                                                          │  Libpri Source Version    = 1.4.12                                  │
                                                          │  IP Address               = 192.168.243.48 on eth0                  │
                                                          │  Operating System         = CentOS release 6.2 (Final)              │
                                                          │  Kernel Version           = 2.6.32-220.17.1.el6.x86_64 - 64 Bit   
            Reporter: Bob Roswell
            Severity: Minor


Sending Voice Mail Blast to large number (>150) of users crushes system performance.  Calls get dropped, go unanswered etc.  Load Average goes from 0.1 to over 20.

I found that adding a sleep(2) in the routine copy_message fixed my issue.

I added just before return 

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