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From Ferreira Manuel <Manuel.Ferre...@regiodata-gmbh.de>
Subject [users@httpd] Apache/2.2.16 (Prefork) with PHP: Processes in mode "Closing connection" never closed
Date Mon, 22 Aug 2011 08:24:39 GMT
Dear List,
we are using Apache/2.2.16 (Prefork) with PHP/5.3.3-7+squeeze3 on one application-server and
monitor a strange behavior with processes being in mode "Closing connection" until we manually
restart the webserver with "apache2ctl restart".
On Debian Lenny with Apache/2.2.9 (Prefork) and PHP/5.2.6-1+lenny13 the same configuration
has worked for years without any problems.

Either "/var/log/apache2/error.log" or "/var/log/syslog" don't show any considerable errors.

The following output for example shows a process 12399 which is in "Closing connection" mode
for a long time.

Srv	PID	Acc		M	CPU 	SS	Req	Conn	Child	Slot	Client	VHost	Request
0-11	12398	86/985/985	W 	44.56	2	0	3708.9	12.94	12.94 	192.168.98.3	[URL]
1-11	12399	1/116/116	C 	3.37	2424	0	0.0	0.61	0.61 	::1	vsrv33-pinux2	OPTIONS * HTTP/1.0
2-11	12400	1/158/158	C 	7.99	2449	0	0.0	3.35	3.35 	::1	vsrv33-pinux2	OPTIONS * HTTP/1.0
3-11	15993	6/7/505	K 	0.23	1	133	36.3	0.04	7.04 	192.168.98.3	[URL]
4-11	12402	1/566/566	C 	23.38	1093	0	0.0	7.64	7.64 	::1	vsrv33-pinux2	OPTIONS * HTTP/1.0
5-11	12408	1/302/302	C 	16.34	1352	0	0.0	3.90	3.90 	::1	vsrv33-pinux2	OPTIONS * HTTP/1.0
[...]

In front of this application-server we use an Apache/2.2.16 (Debian) as an reverse proxy.
Maybe this issue is also connected to the reverse proxy. But on the other hand the second
application-server with Apache/2.2.9 (Prefork) and PHP does not have these problems. So it
seems to be a new issue.

By the way: Killing processes like 12399 with kill -9 seems to help. But this is really dirty.

We are quite desperate right now and we appreciate any help.


Best regards

Manuel Ferreira
Systemtechnik

regioDATA GmbH
Wiesenweg 4
79539 Lörrach
Telefon 07621 91943-319
Telefax 07621/91943-310
manuel.ferreira@regiodata-gmbh.de
www.regiodata-gmbh.de

regioDATA Gesellschaft für raumbezogene Informationssysteme mbH
Sitz Lörrach, Amtsgericht Freiburg HRB 412719
Geschäftsführer: Michael Schade



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