[Asterisk-bugs] [Asterisk 0009387]: app_queue offers call then grabs it back with a timeout

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=9387 
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Reported By:                douglasl
Assigned To:                
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Project:                    Asterisk
Issue ID:                   9387
Category:                   Applications/app_queue
Reproducibility:            random
Severity:                   minor
Priority:                   normal
Status:                     new
Asterisk Version:            1.4.1 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Disclaimer on File?:        No 
Request Review:              
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Date Submitted:             03-27-2007 05:57 CDT
Last Modified:              07-11-2007 14:25 CDT
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Summary:                    app_queue offers call then grabs it back with a
timeout
Description: 
Hi everyone,

Am having a problem with a callcenter using AgentCallbackLogin for the
agents. What happens is at random intervals (mainly noted at high call load
- 40 or more channels) the queue attempts to call an agent, then quickly
grabs it back in the same instance reporting that no one answered the call
in 10000ms.

Please see attached log file for a call, as well as a sip trace from a
Snom320 phone.

Thanks
Doug
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---------------------------------------------------------------------- 
 putnopvut - 07-11-07 14:25  
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I've been looking at this over the past several days, and it's not obvious
what could be causing this and I've not been able to reproduce the problem
myself. The only place I'm seeing in the code that could be problematic is
a call to poll() which could be returning 0 even though it apparently has
not timed out.

Out of curiosity on what type of system are you running Asterisk? What
kernel version are you using? Is it 32 or 64 bit?

I've added a few lines of debug output to the code. Try patching your
installation with these. If you have the problem occur again, attach
another log so I can see if my hunch was correct. This patch will increase
the amount of debug messages that appear on your console, but hopefully
they will help prove what I'm after here. 

Issue History 
Date Modified   Username       Field                    Change               
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07-11-07 14:25  putnopvut      Note Added: 0067140                          
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