[asterisk-users] Asterisk 1.6 produces *many* zombie processes on Debian.

[Tilghman Lesher]

On Wednesday 22 December 2010 08:23:19 MrHanMan wrote:
> On Wed, Dec 22, 2010 at 6:41 AM, Steve Davies <davies147 at gmail.com> 
wrote:
> > On 21 December 2010 22:06, Tilghman Lesher <tilghman at meg.abyt.es> 
wrote:
> >> On Monday 20 December 2010 14:39:36 Ernie Dunbar wrote:
> >>> We have an issue with our Asterisk install where Asterisk produces
> >>> many Zombie processes (on the order of several hundred per minute)
> >>> until either the Asterisk server is restarted (and the zombies die
> >>> a natural death), or the kernel runs out of PID space (happens
> >>> within hours) and brings the system to a halt.
> >>> 
> >>> This problem only happens when the server is under some non-trivial
> >>> load. We were testing this server with 8 SCCP phones, making up to
> >>> five simultaneous calls through the DAHDI interface (a Digium
> >>> Wildcard TE410P/TE405P (1st Gen)). Once our customers (nearly all
> >>> SIP clients) start logging on and we get around 7 or 8 simultaneous
> >>> DAHDI calls, Asterisk starts producing zombie processes at a high
> >>> rate.
> >> 
> >> I know what the issue is.  Please open a report on
> >> https://issues.asterisk.org and I'll get a patch uploaded pronto.
> > 
> > Please let us know the issue number once raised - I'd like to follow
> > this one.
> 
> I happened to see it pop up on the bug tracker.  Issue #0018515.  Very
> funny error message in the patch.

It's a forward-port of a section of code that was in res_agi in 1.4.  It
was no longer needed in res_agi because AGIs can now continue to interact
with Asterisk after a hangup event, transitioning gracefully into DeadAGI.

-- 
Tilghman