Well then..
Jagadish Raj R wrote:
Hi Andre,
Here are the results.
Compiled in modules:
core.c
this :
prefork.c
means that your front-end Apache httpd server is running in "prefork" mode.
And what do the parts in red say in the link I sent you before ?
http_core.c
mod_so.c
KeepAlive On
MaxKeepAliveRequests 100
And this :
KeepAliveTimeout 15
means that any time a browser makes a connectionm to the server, sends a few requests on
that connection, and then does not send anything anymore, the server will keep "listening"
anyway for up to 15 seconds after the last request, just in case the browser /would/ send
another request on that connection.
And during that same time, one connection from Apache httpd to Tomcat will be kept
waiting, and one thread in Tomcat will be kept waiting, for the same reason.
You would probably improve the responsiveness of your server in general, by reducing this
to 3 for example.
Thanks & Regards,
JAGADISH RAJ R
-----Original Message-----
From: André Warnier [mailto:a...@ice-sa.com]
Sent: Thursday, August 25, 2011 4:48 PM
To: Tomcat Users List
Subject: Re: Ajp13Processor threads are not getting closed.
To the original poster Jagadish Raj :
Maybe let's restart from the beginning.
First, re-read this page of the online documentation for the mod_jk connector :
http://tomcat.apache.org/connectors-doc/reference/workers.html
Particularly, next to the connection_pool* parameters, the items in red.
Considering that, what is the MPM used on your Apache httpd server ?
(you can see this by running "/usr/sbin/apache2 -l" or "httpd -l"; list the
result here).
(This is to find out if your httpd server is running in "prefork" mode or one of the
multi-threading modes.)
Then, what are the httpd settings for "KeepAlive" ?
(KeepAlive and KeepAliveTimeout). This is usually in /etc/apache2/apache2.conf.
Edward Quick wrote:
mod_jk is not Tomcat so I'm not sure you need to worry about running an older
version of tomcat as long as it's listening on the AJP connector.
-----Original Message-----
From: Jagadish Raj R [mailto:jagadish_ra...@symantec.com]
Sent: 25 August 2011 10:08
To: Tomcat Users List
Subject: RE: Ajp13Processor threads are not getting closed.
Hi,
Apache not accepting JkWatchDogInterval parameter (think it's version problem).
How is this problem fixed in higher Tomcat versions. Can I do the same in lower
version of Tomcat.
(As of now, I don't have a choice of upgrading Tomcat as this requires upgrade
of TIBCO Administrator which is built on top of Tomcat)
Thanks & Regards,
JAGADISH RAJ R | Symantec EAI Support | M P H A S I S an HP company | Level 2, Tower 7, Magarpatta SEZ, Magarpatta city, Pune-411013| Mobile: +91 9011047954| Email: jagadish_ra...@symantec.com
-----Original Message-----
From: Edward Quick [mailto:edward.qu...@iggroup.com]
Sent: Wednesday, August 24, 2011 3:20 PM
To: Tomcat Users List
Subject: RE: Ajp13Processor threads are not getting closed.
You could try adding JkWatchDogInterval 30. That did the trick for me.
-----Original Message-----
From: Jagadish Raj R [mailto:jagadish_ra...@symantec.com]
Sent: 24 August 2011 10:39
To: Tomcat Users List
Subject: Ajp13Processor threads are not getting closed.
Hi Tomcat Users,
I have a Tomcat server to which another apache webserver connects using AJP 1.3
Connector. I have set up a maxProcessors="75" in connector settings. Whenever a
user creates a connection an Ajp13Processor connection thread is created. My problem is
this thread does not get terminated even after the user close the session. Please help me
in finding some configuration changes that will allow me to close these sessions/threads
after a certain timeout value.
I am pasting below the configurations I am using.
<!-- Define an AJP 1.3 Connector on port 8009 -->
<Connector className="org.apache.ajp.tomcat4.Ajp13Connector" port="8089" minProcessors="5"
maxProcessors="75" acceptCount="10" connectionTimeout="60000" debug="0"/>
Workers.properties file:-
worker.list=ajp13
worker.ajp13.port=xxxx
worker.ajp13.host=hostname
worker.ajp13.type=ajp13
worker.ajp13.connection_pool_size=75
worker.ajp13.connection_pool_minsize=15
worker.ajp13.connection_pool_timeout=60
Logs from thread dump of tomcat process:-
"Ajp13Processor[xxxx][7]" daemon prio=10 tid=0x0166c038 nid=0xe0 in
Object.wait() [0xa64ff000..0xa64ffa28]
at java.lang.Object.wait(Native Method)
- waiting on <0xc6de9028> (a org.apache.ajp.tomcat4.Ajp13Processor)
at java.lang.Object.wait(Object.java:474)
at org.apache.ajp.tomcat4.Ajp13Processor.await(Ajp13Processor.java:316)
- locked <0xc6de9028> (a org.apache.ajp.tomcat4.Ajp13Processor)
at org.apache.ajp.tomcat4.Ajp13Processor.run(Ajp13Processor.java:576)
at java.lang.Thread.run(Thread.java:595)
Versions:-
Tomcat - 4.1.27
Mod JK - mod_jk-apache-2.0.49-linux-i686.so
Thanks & Regards,
JAGADISH RAJ R | Symantec EAI Support | M P H A S I S an HP company | Level 2, Tower
7, Magarpatta SEZ, Magarpatta city, Pune-411013| Mobile: +91 9011047954| Email:
jagadish_ra...@symantec.com<mailto:jagadish_ra...@symantec.com>
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