RE: Ajp13Processor threads are not getting closed.
Thanks. I made connection Pool parameters as per documentation. What I am looking for is that whether there is any chance we can close the Ajp13Processor threads in Tomcat Server if they are no longer needed, or after a particular time. Whenever I hit the URL on the browser a new thread is getting created and sooner or later it reaches the threshold. Eventually I'll have to restart the server. -Original Message- From: André Warnier [mailto:a...@ice-sa.com] Sent: Tuesday, August 30, 2011 12:50 AM To: Tomcat Users List Subject: Re: Ajp13Processor threads are not getting closed. 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=6 debug=0/ Workers.properties file:- worker.list=ajp13 worker.ajp13.port= 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[][7] daemon
Re: Ajp13Processor threads are not getting closed.
Jagadish Raj R wrote: Thanks. I made connection Pool parameters as per documentation. What the documentation says, basically, is that in the case of an Apache httpd prefork front-end, you should not use these parameters at all, and leave mod_jk to set them at their default value. What I am looking for is that whether there is any chance we can close the Ajp13Processor threads in Tomcat Server if they are no longer needed, or after a particular time. Whenever I hit the URL on the browser a new thread is getting created and sooner or later it reaches the threshold. Eventually I'll have to restart the server. I do not understand your problem. What do you mean by the treshold ? In the Apache prefork model, when a request comes in, Apache will use one of its children to process that request. Children are created as necessary, and killed when no longer used for a while. If the child determines that the request is for Tomcat, it will run mod_jk to process the request. mod_jk will create a connection with Tomat (only if necessary, if there is none available in the pool already), to send the request to Tomcat. Once created, this connection may persist for a while. That is normal, and it is an optimisation of mod_jk, to avoid having to create and destroy connections all the time. (That's what is called the connection pool, and mod_jk sizes this appropriately by itself, depending on your Apache and Tomcat configuration). When a request reaches Tomcat, a Tomcat thread will be created (if needed) to process that request. When that request has been processed, and there are no more requests coming, this thread will terminate. If there are more requests coming, that thread may be recycled (instead of being terminated) to handle another request (not necessarily for the same browser, not necessarily for the same webapp). At that level, whether the request is coming through Apache and mod_jk, or not, does not make a difference. Normally this mechanism at the Apache level, at the mod_jk level, and at the Tomcat level, works smoothly. It has been refined and tuned over many years for that. There is no need to twiddle with the parameters to achieve this, it is the default behaviour. That is, as long as your global configuration (Apache and Tomcat) is properly sized in function of the number of requests your server has to handle in any period of time, their duration etc. As a very rough approximation, and assuming that /most/ requests which reach Apache are in fact for Tomcat, your Apache MaxClients setting should be approximately the same as the Tomcat AJP Connector's maxThreads setting. And both should represent more or less the number of requests that you think will be in process at the same time. (And if your server cannot handle this number of processes and threads, get a bigger server)(or split Apache and Tomcat on two separate servers). If no more requests are coming, and Tomcat threads do not terminate (become idle first, then disappear after a while) after handling their requests, then it means that something is holding on to them. Most probably, the application which the threads are running is not behaving like it should. -Original Message- From: André Warnier [mailto:a...@ice-sa.com] Sent: Tuesday, August 30, 2011 12:50 AM To: Tomcat Users List Subject: Re: Ajp13Processor threads are not getting closed. 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
RE: Ajp13Processor threads are not getting closed.
Hi Andre, Here are the results. Compiled in modules: core.c prefork.c http_core.c mod_so.c KeepAlive On MaxKeepAliveRequests 100 KeepAliveTimeout 15 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=6 debug=0/ Workers.properties file:- worker.list=ajp13 worker.ajp13.port= 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[][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.commailto:jagadish_ra...@symantec.com The information contained in this email is strictly confidential and for the use of the addressee only, unless otherwise indicated. If you are not the intended recipient, please do not read, copy, use or disclose to others this message or any attachment. Please also notify the sender by replying to this email or by telephone (+44 (0)20 7896 0011) and then delete the email and any copies of it. Opinions, conclusions (etc) that do not relate to the official business of this company shall be understood as neither given
Re: Ajp13Processor threads are not getting closed.
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=6 debug=0/ Workers.properties file:- worker.list=ajp13 worker.ajp13.port= 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[][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
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=6 debug=0/ Workers.properties file:- worker.list=ajp13 worker.ajp13.port= 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[][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.commailto:jagadish_ra...@symantec.com The information contained in this email is strictly confidential and for the use of the addressee only, unless otherwise indicated. If you are not the intended recipient, please do not read, copy, use or disclose to others this message or any attachment. Please also notify the sender by replying to this email or by telephone (+44 (0)20 7896 0011) and then delete the email and any copies of it. Opinions, conclusions (etc) that do not relate to the official business of this company shall be understood as neither given nor endorsed by it. IG Group Holdings plc is a company registered in England and Wales under number 01190902. VAT registration number 761 2978 07. Registered Office: Cannon Bridge House, 25 Dowgate Hill, London EC4R 2YA. Authorised and regulated by the Financial Services Authority. FSA Register number 114059. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Ajp13Processor threads are not getting closed.
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=6 debug=0/ Workers.properties file:- worker.list=ajp13 worker.ajp13.port= 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[][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.commailto:jagadish_ra...@symantec.com The information contained in this email is strictly confidential and for the use of the addressee only, unless otherwise indicated. If you are not the intended recipient, please do not read, copy, use or disclose to others this message or any attachment. Please also notify the sender by replying to this email or by telephone (+44 (0)20 7896 0011) and then delete the email and any copies of it. Opinions, conclusions (etc) that do not relate to the official business of this company shall be understood as neither given nor endorsed by it. IG Group Holdings plc is a company registered in England and Wales under number 01190902. VAT registration number 761 2978 07. Registered Office: Cannon Bridge House, 25 Dowgate Hill, London EC4R 2YA. Authorised and regulated by the Financial Services Authority. FSA Register number 114059. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
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=6 debug=0/ Workers.properties file:- worker.list=ajp13 worker.ajp13.port= 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[][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.commailto:jagadish_ra...@symantec.com The information contained in this email is strictly confidential and for the use of the addressee only, unless otherwise indicated. If you are not the intended recipient, please do not read, copy, use or disclose to others this message or any attachment. Please also notify the sender by replying to this email or by telephone (+44 (0)20 7896 0011) and then delete the email and any copies of it. Opinions, conclusions (etc) that do not relate to the official business of this company shall be understood as neither given nor endorsed by it. IG Group Holdings plc is a company registered in England and Wales under number 01190902. VAT registration number 761 2978 07. Registered Office: Cannon Bridge House, 25 Dowgate Hill, London EC4R 2YA. Authorised and regulated by the Financial Services Authority. FSA Register number 114059. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h
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=6 debug=0/ Workers.properties file:- worker.list=ajp13 worker.ajp13.port= 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[][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.commailto:jagadish_ra...@symantec.com
Re: Ajp13Processor threads are not getting closed.
On 24/08/2011 10:39, Jagadish Raj R wrote: 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. AJP connections are persistent. They are not meant to close. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
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=6 debug=0/ Workers.properties file:- worker.list=ajp13 worker.ajp13.port= 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[][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.commailto:jagadish_ra...@symantec.com The information contained in this email is strictly confidential and for the use of the addressee only, unless otherwise indicated. If you are not the intended recipient, please do not read, copy, use or disclose to others this message or any attachment. Please also notify the sender by replying to this email or by telephone (+44 (0)20 7896 0011) and then delete the email and any copies of it. Opinions, conclusions (etc) that do not relate to the official business of this company shall be understood as neither given nor endorsed by it. IG Group Holdings plc is a company registered in England and Wales under number 01190902. VAT registration number 761 2978 07. Registered Office: Cannon Bridge House, 25 Dowgate Hill, London EC4R 2YA. Authorised and regulated by the Financial Services Authority. FSA Register number 114059. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Ajp13Processor threads are not getting closed.
From: Jagadish Raj R [mailto:jagadish_ra...@symantec.com] Subject: Ajp13Processor threads are not getting closed. Tomcat - 4.1.27 That version of Tomcat is over eight years old, and Tomcat 4 has not been supported for several years. Might want to think about upgrading... - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Ajp13Processor threads are not getting closed.
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 8/24/2011 5:39 AM, Jagadish Raj R wrote: 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. Upgrade to Tomcat 6.0 or later (current is 7.0.20) and use an Executor, which allows threads to stop when they are idle for a certain amount of time. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk5VCAwACgkQ9CaO5/Lv0PB1KgCgu0xQ2vLUwhC5LKKPHjK3hCzv swMAoIavnzaa40N2uCsD+3L2q1+/woEk =PIxs -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org