asterisk users - Mar 2016 - CDR records and conferences

At least in version 12.2.0, the code in cdr.c appears to create CDR
records for each pair of users in a conference.  This is quadratic
and would seem to be an issue with large conferences.

I got two Asterisk crashes when a lot of people tried to dial into a
conference.   They appear quite related to

    https://issues.asterisk.org/jira/browse/ASTERISK-24758

There are thousands of CDR entries on the chain.  I believe this is
due to the quadratic behavior above.  Not all of the "last" fields
point to the same entry, which is peculiar, though.

I think that my crash was caused by a stack overflow in recursive calls
to delete the huge CDR chain (over 7,000 entries).

Why are all these CDR entries made?

On Mar 15 2016, at 8:06 pm, Richard Kenner <kenner at gnat.com>
wrote:

  

  

  
> At least in version 12.2.0, the code in cdr.c appears to create CDR  
records for each pair of users in a conference. This is quadratic  
and would seem to be an issue with large conferences.
>
> I got two Asterisk crashes when a lot of people tried to dial into a  
conference. They appear quite related to
>
>     https://issues.asterisk.org/jira/browse/ASTERISK-24758
  

If you think is related that issue you can reopen. This issue was closed by
not activity, if you put more information and help maybe is possible will
resolve in case if was  a bug.  

Regards,

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