[ANN] Apache Tomcat 7.0.21 released
The Apache Tomcat team announces the immediate availability of Apache Tomcat 7.0.21 Apache Tomcat 7.0.21 includes security fixes, bug fixes and new features compared to version 7.0.20 including: - A fix for CVE-2011-3190 that allowed an attacker to inject requests when Tomcat was configured behind a reverse proxy using the AJP protocol. - Multiple additions and improvements to the memory leak detection/prevention features. - Improved validation of received AJP messages. Please refer to the change log for the complete list of changes: http://tomcat.apache.org/tomcat-7.0-doc/changelog.html Note that this version has 4 zip binaries: a generic one and three bundled with Tomcat native binaries for Windows operating systems running on different CPU architectures. Downloads: http://tomcat.apache.org/download-70.cgi Migration guide from Apache Tomcat 5.5.x and 6.0.x: http://tomcat.apache.org/migration.html Thank you, -- The Apache Tomcat Team - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Http11NioProtocol; socketCloseDelay
On 02/09/2011 01:21, Chris Burroughs wrote: In tomcat 6 Http11NioProtocol defines a socketCloseDelay field. But as far as I and grep can tell it is not used anywhere [1]. Is this field supposed to be doing something? Not that I can tell. It looks to be have been present in the NIO connector since it was created but I can find no evidence of it ever being used or documented. There was an attribute with that name back in Tomcat 3 but that was before my time with the project. I'll remove it from trunk and 7.0.x. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Is it possible turn off autoincrement the port of AJP when tomcat start and port configured is in use ?
Hi, I have a tomcat 6.0.20 where I have next config in server.xml: Connector port=8010 protocol=AJP/1.3 redirectPort=8443 maxThreads=1024 connectionTimeout=6 / Today I found this is in catalina.out: 12-ago-2011 9:22:32 org.apache.jk.common. ChannelSocket init INFO: Port busy 8010 java.net.BindException: Address already in use 12-ago-2011 9:22:32 org.apache.jk.common.ChannelSocket init INFO: Port busy 8011 java.net.BindException: Address already in use 12-ago-2011 9:22:32 org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8012 I need Tomcat running in 8010 port, if it cannot use that port, it should not be running in another. I have configured that port in apache mod_ajp, so I don't like that port can be dinamyc. Is there any tip to disable this mechanism ? I searched in google and this list and in tomcat docs but I didn't find anything Thank you very much!
Re: Is it possible turn off autoincrement the port of AJP when tomcat start and port configured is in use ?
Ok, I downloaded tomcat source code and found maxPort which I think is the parameter I need. I think this should be documented in http://tomcat.apache.org/tomcat-6.0-doc/config/ajp.html or in mod_jk from apache. Thanks! On Fri, Sep 2, 2011 at 11:17 AM, Javier Barroso javibarr...@gmail.comwrote: Hi, I have a tomcat 6.0.20 where I have next config in server.xml: Connector port=8010 protocol=AJP/1.3 redirectPort=8443 maxThreads=1024 connectionTimeout=6 / Today I found this is in catalina.out: 12-ago-2011 9:22:32 org.apache.jk.common. ChannelSocket init INFO: Port busy 8010 java.net.BindException: Address already in use 12-ago-2011 9:22:32 org.apache.jk.common.ChannelSocket init INFO: Port busy 8011 java.net.BindException: Address already in use 12-ago-2011 9:22:32 org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8012 I need Tomcat running in 8010 port, if it cannot use that port, it should not be running in another. I have configured that port in apache mod_ajp, so I don't like that port can be dinamyc. Is there any tip to disable this mechanism ? I searched in google and this list and in tomcat docs but I didn't find anything Thank you very much!
Re: Is it possible turn off autoincrement the port of AJP when tomcat start and port configured is in use ?
Searching by maxport in google, I found http://marc.info/?l=tomcat-userm=119266319507127w=2 thread, but seems like there is not answer to this question :( Any tip ? On Fri, Sep 2, 2011 at 11:22 AM, Javier Barroso javibarr...@gmail.comwrote: Ok, I downloaded tomcat source code and found maxPort which I think is the parameter I need. I think this should be documented in http://tomcat.apache.org/tomcat-6.0-doc/config/ajp.html or in mod_jk from apache. Thanks! On Fri, Sep 2, 2011 at 11:17 AM, Javier Barroso javibarr...@gmail.comwrote: Hi, I have a tomcat 6.0.20 where I have next config in server.xml: Connector port=8010 protocol=AJP/1.3 redirectPort=8443 maxThreads=1024 connectionTimeout=6 / Today I found this is in catalina.out: 12-ago-2011 9:22:32 org.apache.jk.common. ChannelSocket init INFO: Port busy 8010 java.net.BindException: Address already in use 12-ago-2011 9:22:32 org.apache.jk.common.ChannelSocket init INFO: Port busy 8011 java.net.BindException: Address already in use 12-ago-2011 9:22:32 org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8012 I need Tomcat running in 8010 port, if it cannot use that port, it should not be running in another. I have configured that port in apache mod_ajp, so I don't like that port can be dinamyc. Is there any tip to disable this mechanism ? I searched in google and this list and in tomcat docs but I didn't find anything Thank you very much!
Re: tomcat-6 socket.soLingerOn vs connectionLinger
On 02/09/2011 02:37, Chris Burroughs wrote:
Looking at the Connector configuration options I'm having trouble
reconciling the description of socket.soLingerOn and connectionLinger [1]
The documentation is a bit of a mess here. I'll explain what should
happen below and try and clean up the documentation.
There are three (or four) attributes to consider:
connectionLinger (a.k.a. soLinger)
socket.soLingerOn
socket.soLingerTime
The simplest way to understand how they interact is to look at the
setSoLingermethod in the endpoint
public void setSoLinger(int soLinger) {
socketProperties.setSoLingerTime(soLinger);
socketProperties.setSoLingerOn(soLinger=0);
}
connectionLinger is essentially a short-cut to setting soLingerTime and
soLingerOn
So it sounds like connectionLinger is just a way of setting
socket.soLingerOn, but then it would be redundant to have two options.
Yes, it is redundant. connectionLinger was first and then when the
socket.* attributes were added, all the socket attributes were exposed
creating the redundancy.
Are they about different sockets?
No.
The defaults are also opposites. If
both options affect SO_LINGER time, which takes precedence?
trunk and Tomcat 7: JVM defaults are used. If both are set in server.xml
(don't do that) it depends on the order in which the attributes are read.
Tomcat 6:
BIO APR. Only support connectionLinger. Default 100.
NIO. Supports all three (four). Default 25.
Also, the units of connectionLinger are milliseconds, but
java.net.Socket#setSoLinger uses seconds, so I'm not sure how greater
than second precision could be achieved.
It can't. The units of connectionLinger are seconds. That is another
documentation error.
The docs have been fixed for trunk, 7.0.x and 6.0.x and will be included
in 7.0.22 6.0.34 onwards.
Mark
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Re: Is it possible turn off autoincrement the port of AJP when tomcat start and port configured is in use ?
On 02/09/2011 10:38, Javier Barroso wrote: Searching by maxport in google, I found http://marc.info/?l=tomcat-userm=119266319507127w=2 thread, but seems like there is not answer to this question :( Any tip ? Try reading the 6.0x. changelog. Mark On Fri, Sep 2, 2011 at 11:22 AM, Javier Barroso javibarr...@gmail.comwrote: Ok, I downloaded tomcat source code and found maxPort which I think is the parameter I need. I think this should be documented in http://tomcat.apache.org/tomcat-6.0-doc/config/ajp.html or in mod_jk from apache. Thanks! On Fri, Sep 2, 2011 at 11:17 AM, Javier Barroso javibarr...@gmail.comwrote: Hi, I have a tomcat 6.0.20 where I have next config in server.xml: Connector port=8010 protocol=AJP/1.3 redirectPort=8443 maxThreads=1024 connectionTimeout=6 / Today I found this is in catalina.out: 12-ago-2011 9:22:32 org.apache.jk.common. ChannelSocket init INFO: Port busy 8010 java.net.BindException: Address already in use 12-ago-2011 9:22:32 org.apache.jk.common.ChannelSocket init INFO: Port busy 8011 java.net.BindException: Address already in use 12-ago-2011 9:22:32 org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8012 I need Tomcat running in 8010 port, if it cannot use that port, it should not be running in another. I have configured that port in apache mod_ajp, so I don't like that port can be dinamyc. Is there any tip to disable this mechanism ? I searched in google and this list and in tomcat docs but I didn't find anything Thank you very much! - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Is it possible turn off autoincrement the port of AJP when tomcat start and port configured is in use ?
That mean that I can use channelSocket.maxPort in tomcat 6.0.20 ? I read about an new alias maxport, but I suppose I can use still channelSocket.maxPort. Upgrading all tomcats here could be a problem with applications :( Thank you very much Regards On Fri, Sep 2, 2011 at 12:07 PM, Mark Thomas ma...@apache.org wrote: On 02/09/2011 10:38, Javier Barroso wrote: Searching by maxport in google, I found http://marc.info/?l=tomcat-userm=119266319507127w=2 thread, but seems like there is not answer to this question :( Any tip ? Try reading the 6.0x. changelog. Mark On Fri, Sep 2, 2011 at 11:22 AM, Javier Barroso javibarr...@gmail.comwrote: Ok, I downloaded tomcat source code and found maxPort which I think is the parameter I need. I think this should be documented in http://tomcat.apache.org/tomcat-6.0-doc/config/ajp.html or in mod_jk from apache. Thanks! On Fri, Sep 2, 2011 at 11:17 AM, Javier Barroso javibarr...@gmail.comwrote: Hi, I have a tomcat 6.0.20 where I have next config in server.xml: Connector port=8010 protocol=AJP/1.3 redirectPort=8443 maxThreads=1024 connectionTimeout=6 / Today I found this is in catalina.out: 12-ago-2011 9:22:32 org.apache.jk.common. ChannelSocket init INFO: Port busy 8010 java.net.BindException: Address already in use 12-ago-2011 9:22:32 org.apache.jk.common.ChannelSocket init INFO: Port busy 8011 java.net.BindException: Address already in use 12-ago-2011 9:22:32 org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8012 I need Tomcat running in 8010 port, if it cannot use that port, it should not be running in another. I have configured that port in apache mod_ajp, so I don't like that port can be dinamyc. Is there any tip to disable this mechanism ? I searched in google and this list and in tomcat docs but I didn't find anything Thank you very much! - 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
Bug 51698 - ajp CPing/Forward-Request packet forgery
Hi there, I was testing out the packet forgery example (at https://issues.apache.org/bugzilla/show_bug.cgi?id=51698) to see if my site was vulnerable and got the following results. I'm not sure looking at the code comments in ForwardRequestForgeryExample.java if the output below means it's vulnerable and what exactly that exploited. Could someone give me a hand please? Thanks, Ed. C:java -cp . ForwardRequestForgeryExample Sending AJP Forward-Request Packet... End $ tail -f catalina.out Invoke HelloWorldExample.doPost method: --- Host: my.evil-site.com RemoteAddr: 1.2.3.4 LocalPort: 999 woo: I am here 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.
Re: Bug 51698 - ajp CPing/Forward-Request packet forgery
On 02/09/2011 14:12, Edward Quick wrote: Hi there, I was testing out the packet forgery example (at https://issues.apache.org/bugzilla/show_bug.cgi?id=51698) to see if my site was vulnerable and got the following results. I'm not sure looking at the code comments in ForwardRequestForgeryExample.java if the output below means it's vulnerable and what exactly that exploited. Yes, you are vulnerable. The attack exploits a bug in the AJP connector you have configured. Could someone give me a hand please? See above. Mark Thanks, Ed. C:java -cp . ForwardRequestForgeryExample Sending AJP Forward-Request Packet... End $ tail -f catalina.out Invoke HelloWorldExample.doPost method: --- Host: my.evil-site.com RemoteAddr: 1.2.3.4 LocalPort: 999 woo: I am here 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
Tomcat Performance Turning.
Background: We have a moderately high traffic web application (between 8 to 21 million hits/day) running Apache to serve static content (also to load balance and create a DMZ) and Weblogic to serve dynamic content (Struts 1.1 based Java web application). We are trying to replace Weblogic with Tomcat and we have ported our code to work with Tomcat. All works well in Tomcat in the DEV, QA, and STAGING environment as long as there is no real load. The Issue - Load Testing: In our staging environment for load testing, when we run the load test using 525 concurrent users, the app doesn't perform at all. The CPU usage (on Apache and Tomcat Servers) hovers between 7% to 8%. The database server CPU usage is also between 4 and 5%. Setup for Load Testing: We have setup 2 apache web servers (4 Quad Processors i.e. 16 CPUs each), 2 Tomcat (version 6.0.29) servers (4 Quad Processors i.e. 16 CPUs each). Each server has 32 Gb ram. We are using AJP 1.3 to connect Tomcat and Apache. Mentioned below is the version information: Apache Version 2.2.14 (with mod_jk module) Tomcat: 6.0.29 Database: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bits Connection Pool: DBCP. Mentioned below are connector settings in conf/server.xml: Connector address=stagingTCserver01 backlog=300 connectionTimeout=6 enableLookups=false maxPostSize=2097152 maxSpareThreads=10 maxThreads=30 minSpareThreads=5 port=8006 protocol=AJP/1.3 tcpNoDelay=true / Mentioned below are the settings for JNDI resource configured in conf/context.xml: Resource name=jdbc/onlinedb auth=Container type=javax.sql.DataSource driverClassName=oracle.jdbc.OracleDriver url=jdbc:oracle:thin:@192.168.12.10:1521:WEBDB initialSize=1 maxActive=30 minIdle=1 maxIdle=5 maxWait=30 poolPreparedStatements=true maxOpenPreparedStatements=300 validationQuery=SELECT 1 FROM BB_DUAL testOnBorrow=true validationInterval=1 testWhileIdle=true / JVM Parameters: -Xms512m -Xmx2048m -XX:PermSize=128m -XX:MaxPermSize=256m -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/logs/WL2TC/app/ -verbose:gc -Xloggc:/logs/WL2TC/app/WL2TC_1-gc.log It must be noted that Weblogic setup performs very well using similar settings. Garbage Collection: While the load test is running, Garbage collection works just fine i.e. Young GC occurring every 2-3 minutes and takes less than half a second. Full GC occurs every hour and takes a little over 2 seconds. Any tips/pointers will be greatly appreciated. Talha.
RE: Bug 51698 - ajp CPing/Forward-Request packet forgery
Thanks Mark. The report says this makes (previous versions of) Apache Tomcat vulnerable to an authentication bypass and information disclosure, so I'm was just trying to understand how the example demonstrates that? -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: 02 September 2011 14:18 To: Tomcat Users List Subject: Re: Bug 51698 - ajp CPing/Forward-Request packet forgery On 02/09/2011 14:12, Edward Quick wrote: Hi there, I was testing out the packet forgery example (at https://issues.apache.org/bugzilla/show_bug.cgi?id=51698) to see if my site was vulnerable and got the following results. I'm not sure looking at the code comments in ForwardRequestForgeryExample.java if the output below means it's vulnerable and what exactly that exploited. Yes, you are vulnerable. The attack exploits a bug in the AJP connector you have configured. Could someone give me a hand please? See above. Mark Thanks, Ed. C:java -cp . ForwardRequestForgeryExample Sending AJP Forward-Request Packet... End $ tail -f catalina.out Invoke HelloWorldExample.doPost method: --- Host: my.evil-site.com RemoteAddr: 1.2.3.4 LocalPort: 999 woo: I am here 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: Tomcat Performance Turning.
Hello Talha, from a quick glance at your post, do you have the same 30 max threads limit in weblogic? Because sending 525 users through 2x30=60 max threads seems a little bottlenecky. Which software are you using to produce the load? Does it keepalive the connections? regards Leon On Fri, Sep 2, 2011 at 3:31 PM, Talha Fazal tfa...@credera.com wrote: Background: We have a moderately high traffic web application (between 8 to 21 million hits/day) running Apache to serve static content (also to load balance and create a DMZ) and Weblogic to serve dynamic content (Struts 1.1 based Java web application). We are trying to replace Weblogic with Tomcat and we have ported our code to work with Tomcat. All works well in Tomcat in the DEV, QA, and STAGING environment as long as there is no real load. The Issue - Load Testing: In our staging environment for load testing, when we run the load test using 525 concurrent users, the app doesn't perform at all. The CPU usage (on Apache and Tomcat Servers) hovers between 7% to 8%. The database server CPU usage is also between 4 and 5%. Setup for Load Testing: We have setup 2 apache web servers (4 Quad Processors i.e. 16 CPUs each), 2 Tomcat (version 6.0.29) servers (4 Quad Processors i.e. 16 CPUs each). Each server has 32 Gb ram. We are using AJP 1.3 to connect Tomcat and Apache. Mentioned below is the version information: Apache Version 2.2.14 (with mod_jk module) Tomcat: 6.0.29 Database: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bits Connection Pool: DBCP. Mentioned below are connector settings in conf/server.xml: Connector address=stagingTCserver01 backlog=300 connectionTimeout=6 enableLookups=false maxPostSize=2097152 maxSpareThreads=10 maxThreads=30 minSpareThreads=5 port=8006 protocol=AJP/1.3 tcpNoDelay=true / Mentioned below are the settings for JNDI resource configured in conf/context.xml: Resource name=jdbc/onlinedb auth=Container type=javax.sql.DataSource driverClassName=oracle.jdbc.OracleDriver url=jdbc:oracle:thin:@192.168.12.10:1521:WEBDB initialSize=1 maxActive=30 minIdle=1 maxIdle=5 maxWait=30 poolPreparedStatements=true maxOpenPreparedStatements=300 validationQuery=SELECT 1 FROM BB_DUAL testOnBorrow=true validationInterval=1 testWhileIdle=true / JVM Parameters: -Xms512m -Xmx2048m -XX:PermSize=128m -XX:MaxPermSize=256m -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/logs/WL2TC/app/ -verbose:gc -Xloggc:/logs/WL2TC/app/WL2TC_1-gc.log It must be noted that Weblogic setup performs very well using similar settings. Garbage Collection: While the load test is running, Garbage collection works just fine i.e. Young GC occurring every 2-3 minutes and takes less than half a second. Full GC occurs every hour and takes a little over 2 seconds. Any tips/pointers will be greatly appreciated. Talha. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Bug 51698 - ajp CPing/Forward-Request packet forgery
On 02/09/2011 14:33, Edward Quick wrote: Thanks Mark. The report says this makes (previous versions of) Apache Tomcat vulnerable to an authentication bypass and information disclosure, so I'm was just trying to understand how the example demonstrates that? The example shows that Tomcat process an AJP message that was entirely controlled by the attacker rather than the reverse proxy. Tomcat trusts that information in the AJP message (authenticated user name, client IP address, etc) are correct. If an attacker can control the AJP message then things like authentication or filters based on client IP address etc can all be bypassed. Additionally, processing this extra request can cause Tomcat to start mixing up responses to requests. Mark -Original Message- From: Mark Thomas [mailto:ma...@apache.org] Sent: 02 September 2011 14:18 To: Tomcat Users List Subject: Re: Bug 51698 - ajp CPing/Forward-Request packet forgery On 02/09/2011 14:12, Edward Quick wrote: Hi there, I was testing out the packet forgery example (at https://issues.apache.org/bugzilla/show_bug.cgi?id=51698) to see if my site was vulnerable and got the following results. I'm not sure looking at the code comments in ForwardRequestForgeryExample.java if the output below means it's vulnerable and what exactly that exploited. Yes, you are vulnerable. The attack exploits a bug in the AJP connector you have configured. Could someone give me a hand please? See above. Mark Thanks, Ed. C:java -cp . ForwardRequestForgeryExample Sending AJP Forward-Request Packet... End $ tail -f catalina.out Invoke HelloWorldExample.doPost method: --- Host: my.evil-site.com RemoteAddr: 1.2.3.4 LocalPort: 999 woo: I am here 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: Tomcat Performance Turning.
From: Talha Fazal [mailto:tfa...@credera.com] Subject: Tomcat Performance Turning. In our staging environment for load testing, when we run the load test using 525 concurrent users, the app doesn't perform at all. The CPU usage (on Apache and Tomcat Servers) hovers between 7% to 8%. The database server CPU usage is also between 4 and 5%. Since your CPU usage is low, your threads must be waiting for something. Take several thread dumps and find out what. http://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_running_webapp_.3F (I'll guess maxThreads and data base connections; a max of 30 seems a bit low for 525 concurrent requests.) validationQuery=SELECT 1 FROM BB_DUAL Most DBs provide a very simple ping-like request capability; that would be preferable to a select. -Xms512m -Xmx2048m In a server environment, one normally sets Xms and Xmx to the same value to avoid heap thrashing. However, this is unrelated to your current problem. - 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: Tomcat Performance Turning.
Plz. see my answers below in UPPERCAPS. Thanks! -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 8:35 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Hello Talha, from a quick glance at your post, do you have the same 30 max threads limit in weblogic? YES. Because sending 525 users through 2x30=60 max threads seems a little bottlenecky. I FORGOT TO MENTION THAT ON EACH TOMCAT SERVER, WE ARE RUNNING 3 INSTANCES OF TOMCAT ON EACH OF OUR TOMCAT SERVERS (2 SERVERS), THUS 2*3*30=180 maxThreads. WE EVEN INCREASED THE maxThreads TO 120 FOR EACH INSTANCE (thus 120*6=720 maxThreads), AND MATCHED maxActive IN JNDI RESOURCE TO 120, BUT WE STILL DIDN'T SEE CONSIDERABLE IMPROVEMENT. THE CPU USAGE INCREASED FROM 7% to 10%. Which software are you using to produce the load? LOADRUNNER. Does it keepalive the connections? YES. regards Leon On Fri, Sep 2, 2011 at 3:31 PM, Talha Fazal tfa...@credera.com wrote: Background: We have a moderately high traffic web application (between 8 to 21 million hits/day) running Apache to serve static content (also to load balance and create a DMZ) and Weblogic to serve dynamic content (Struts 1.1 based Java web application). We are trying to replace Weblogic with Tomcat and we have ported our code to work with Tomcat. All works well in Tomcat in the DEV, QA, and STAGING environment as long as there is no real load. The Issue - Load Testing: In our staging environment for load testing, when we run the load test using 525 concurrent users, the app doesn't perform at all. The CPU usage (on Apache and Tomcat Servers) hovers between 7% to 8%. The database server CPU usage is also between 4 and 5%. Setup for Load Testing: We have setup 2 apache web servers (4 Quad Processors i.e. 16 CPUs each), 2 Tomcat (version 6.0.29) servers (4 Quad Processors i.e. 16 CPUs each). Each server has 32 Gb ram. We are using AJP 1.3 to connect Tomcat and Apache. Mentioned below is the version information: Apache Version 2.2.14 (with mod_jk module) Tomcat: 6.0.29 Database: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bits Connection Pool: DBCP. Mentioned below are connector settings in conf/server.xml: Connector address=stagingTCserver01 backlog=300 connectionTimeout=6 enableLookups=false maxPostSize=2097152 maxSpareThreads=10 maxThreads=30 minSpareThreads=5 port=8006 protocol=AJP/1.3 tcpNoDelay=true / Mentioned below are the settings for JNDI resource configured in conf/context.xml: Resource name=jdbc/onlinedb auth=Container type=javax.sql.DataSource driverClassName=oracle.jdbc.OracleDriver url=jdbc:oracle:thin:@192.168.12.10:1521:WEBDB initialSize=1 maxActive=30 minIdle=1 maxIdle=5 maxWait=30 poolPreparedStatements=true maxOpenPreparedStatements=300 validationQuery=SELECT 1 FROM BB_DUAL testOnBorrow=true validationInterval=1 testWhileIdle=true / JVM Parameters: -Xms512m -Xmx2048m -XX:PermSize=128m -XX:MaxPermSize=256m -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/logs/WL2TC/app/ -verbose:gc -Xloggc:/logs/WL2TC/app/WL2TC_1-gc.log It must be noted that Weblogic setup performs very well using similar settings. Garbage Collection: While the load test is running, Garbage collection works just fine i.e. Young GC occurring every 2-3 minutes and takes less than half a second. Full GC occurs every hour and takes a little over 2 seconds. Any tips/pointers will be greatly appreciated. Talha. - 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: Tomcat Performance Turning.
Thx Charles! We did take a thread dump and we found a lot of threads locked. Please see a short sample below: http-8014-9 daemon prio=10 tid=0x60965c00 nid=0x6c83 in Object.wait() [0x4c688000..0x4c688c90] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object.wait(Native Method) at java.lang.Object.wait(Object.java:485) at org.apache.tomcat.util.net.JIoEndpoint$Worker.await(JIoEndpoint.java:458) - locked 0x2aaae10403b0 (a org.apache.tomcat.util.net.JIoEndpoint$Worker) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:484) at java.lang.Thread.run(Thread.java:619) Sincerely, Talha. -Original Message- From: Caldarale, Charles R [mailto:chuck.caldar...@unisys.com] Sent: Friday, September 02, 2011 8:42 AM To: Tomcat Users List Subject: RE: Tomcat Performance Turning. From: Talha Fazal [mailto:tfa...@credera.com] Subject: Tomcat Performance Turning. In our staging environment for load testing, when we run the load test using 525 concurrent users, the app doesn't perform at all. The CPU usage (on Apache and Tomcat Servers) hovers between 7% to 8%. The database server CPU usage is also between 4 and 5%. Since your CPU usage is low, your threads must be waiting for something. Take several thread dumps and find out what. http://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_running_webapp_.3F (I'll guess maxThreads and data base connections; a max of 30 seems a bit low for 525 concurrent requests.) validationQuery=SELECT 1 FROM BB_DUAL Most DBs provide a very simple ping-like request capability; that would be preferable to a select. -Xms512m -Xmx2048m In a server environment, one normally sets Xms and Xmx to the same value to avoid heap thrashing. However, this is unrelated to your current problem. - 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 - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat Performance Turning.
Hello Talha, seems that your tomcats are fine. Question, you mention that the tomcat do not perform, but you don't tell us how you come to this conclusion except for cpu load. What is the difference in response times between weblogic and tomcat? Maybe your tomcat just perform the job MUCH faster ;-) The thread dump you posted in another reply indicates that your tomcats are idling. Do you have manager installed? With manager you could monitor active connections and requests. Do you have probe installed? Finally, if you really want to profile your application, do you have moskito installed? :-) (the one i initially wrote -moskito.anotheria.net, therefore the shameless advertisement). In the last case I can offer you to provide support getting it running. regards Leon On Fri, Sep 2, 2011 at 3:50 PM, Talha Fazal tfa...@credera.com wrote: Plz. see my answers below in UPPERCAPS. Thanks! -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 8:35 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Hello Talha, from a quick glance at your post, do you have the same 30 max threads limit in weblogic? YES. Because sending 525 users through 2x30=60 max threads seems a little bottlenecky. I FORGOT TO MENTION THAT ON EACH TOMCAT SERVER, WE ARE RUNNING 3 INSTANCES OF TOMCAT ON EACH OF OUR TOMCAT SERVERS (2 SERVERS), THUS 2*3*30=180 maxThreads. WE EVEN INCREASED THE maxThreads TO 120 FOR EACH INSTANCE (thus 120*6=720 maxThreads), AND MATCHED maxActive IN JNDI RESOURCE TO 120, BUT WE STILL DIDN'T SEE CONSIDERABLE IMPROVEMENT. THE CPU USAGE INCREASED FROM 7% to 10%. Which software are you using to produce the load? LOADRUNNER. Does it keepalive the connections? YES. regards Leon On Fri, Sep 2, 2011 at 3:31 PM, Talha Fazal tfa...@credera.com wrote: Background: We have a moderately high traffic web application (between 8 to 21 million hits/day) running Apache to serve static content (also to load balance and create a DMZ) and Weblogic to serve dynamic content (Struts 1.1 based Java web application). We are trying to replace Weblogic with Tomcat and we have ported our code to work with Tomcat. All works well in Tomcat in the DEV, QA, and STAGING environment as long as there is no real load. The Issue - Load Testing: In our staging environment for load testing, when we run the load test using 525 concurrent users, the app doesn't perform at all. The CPU usage (on Apache and Tomcat Servers) hovers between 7% to 8%. The database server CPU usage is also between 4 and 5%. Setup for Load Testing: We have setup 2 apache web servers (4 Quad Processors i.e. 16 CPUs each), 2 Tomcat (version 6.0.29) servers (4 Quad Processors i.e. 16 CPUs each). Each server has 32 Gb ram. We are using AJP 1.3 to connect Tomcat and Apache. Mentioned below is the version information: Apache Version 2.2.14 (with mod_jk module) Tomcat: 6.0.29 Database: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bits Connection Pool: DBCP. Mentioned below are connector settings in conf/server.xml: Connector address=stagingTCserver01 backlog=300 connectionTimeout=6 enableLookups=false maxPostSize=2097152 maxSpareThreads=10 maxThreads=30 minSpareThreads=5 port=8006 protocol=AJP/1.3 tcpNoDelay=true / Mentioned below are the settings for JNDI resource configured in conf/context.xml: Resource name=jdbc/onlinedb auth=Container type=javax.sql.DataSource driverClassName=oracle.jdbc.OracleDriver url=jdbc:oracle:thin:@192.168.12.10:1521:WEBDB initialSize=1 maxActive=30 minIdle=1 maxIdle=5 maxWait=30 poolPreparedStatements=true maxOpenPreparedStatements=300 validationQuery=SELECT 1 FROM BB_DUAL testOnBorrow=true validationInterval=1 testWhileIdle=true / JVM Parameters: -Xms512m -Xmx2048m -XX:PermSize=128m -XX:MaxPermSize=256m -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/logs/WL2TC/app/ -verbose:gc -Xloggc:/logs/WL2TC/app/WL2TC_1-gc.log It must be noted that Weblogic setup performs very well using similar settings. Garbage Collection: While the load test is running, Garbage collection works just fine i.e. Young GC occurring every 2-3 minutes and takes less than half a second. Full GC occurs every hour and takes a little over 2 seconds. Any tips/pointers will be greatly appreciated. Talha. - 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:
RE: Tomcat Performance Turning.
From: Talha Fazal [mailto:tfa...@credera.com] Subject: RE: Tomcat Performance Turning. We did take a thread dump and we found a lot of threads locked. http-8014-9 daemon prio=10 tid=0x60965c00 nid=0x6c83 in Object.wait() at org.apache.tomcat.util.net.JIoEndpoint$Worker.await(JIoEndpoint.java:458) Often, a throughput problem is not the many, but just one that is holding all of the others up. The example you cite above is simply a thread waiting for something to do. Do you perhaps have a network problem, where requests are simply not getting delivered to httpd or Tomcat in a timely fashion? - 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: Tomcat Performance Turning.
Hi Leon, Please see any answers in CAPS below. -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 9:06 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Hello Talha, seems that your tomcats are fine. Question, you mention that the tomcat do not perform, but you don't tell us how you come to this conclusion except for cpu load. ANSWER: LOOKING INTO THE TOMCAT ACCESS LOGS, THE RESPONSE TIME (%D) IS HORRIBLE). What is the difference in response times between weblogic and tomcat? ANSWER: FOR PAGES THAT WEBLOGIC SERVES IN 500 ms ON AVERAGE, TOMCAT IS TAKING 17000 ms ON AVERAGE. Maybe your tomcat just perform the job MUCH faster ;-) The thread dump you posted in another reply indicates that your tomcats are idling. Do you have manager installed? NO. With manager you could monitor active connections and requests. Do you have probe installed? YES, WE HAVE IT INSTALLED. A LOT OF THREADS ARE IDLING IS WHAT WE OBSERVE. Finally, if you really want to profile your application, do you have moskito installed? :-) (the one i initially wrote -moskito.anotheria.net, therefore the shameless advertisement). :-) SURE WILL GIVE IT A TRY [TIME PERMITTING]. In the last case I can offer you to provide support getting it running. WILL LET YOU KNOW IF WE ARE INTERESTED. THANKS. regards Leon On Fri, Sep 2, 2011 at 3:50 PM, Talha Fazal tfa...@credera.com wrote: Plz. see my answers below in UPPERCAPS. Thanks! -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 8:35 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Hello Talha, from a quick glance at your post, do you have the same 30 max threads limit in weblogic? YES. Because sending 525 users through 2x30=60 max threads seems a little bottlenecky. I FORGOT TO MENTION THAT ON EACH TOMCAT SERVER, WE ARE RUNNING 3 INSTANCES OF TOMCAT ON EACH OF OUR TOMCAT SERVERS (2 SERVERS), THUS 2*3*30=180 maxThreads. WE EVEN INCREASED THE maxThreads TO 120 FOR EACH INSTANCE (thus 120*6=720 maxThreads), AND MATCHED maxActive IN JNDI RESOURCE TO 120, BUT WE STILL DIDN'T SEE CONSIDERABLE IMPROVEMENT. THE CPU USAGE INCREASED FROM 7% to 10%. Which software are you using to produce the load? LOADRUNNER. Does it keepalive the connections? YES. regards Leon On Fri, Sep 2, 2011 at 3:31 PM, Talha Fazal tfa...@credera.com wrote: Background: We have a moderately high traffic web application (between 8 to 21 million hits/day) running Apache to serve static content (also to load balance and create a DMZ) and Weblogic to serve dynamic content (Struts 1.1 based Java web application). We are trying to replace Weblogic with Tomcat and we have ported our code to work with Tomcat. All works well in Tomcat in the DEV, QA, and STAGING environment as long as there is no real load. The Issue - Load Testing: In our staging environment for load testing, when we run the load test using 525 concurrent users, the app doesn't perform at all. The CPU usage (on Apache and Tomcat Servers) hovers between 7% to 8%. The database server CPU usage is also between 4 and 5%. Setup for Load Testing: We have setup 2 apache web servers (4 Quad Processors i.e. 16 CPUs each), 2 Tomcat (version 6.0.29) servers (4 Quad Processors i.e. 16 CPUs each). Each server has 32 Gb ram. We are using AJP 1.3 to connect Tomcat and Apache. Mentioned below is the version information: Apache Version 2.2.14 (with mod_jk module) Tomcat: 6.0.29 Database: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bits Connection Pool: DBCP. Mentioned below are connector settings in conf/server.xml: Connector address=stagingTCserver01 backlog=300 connectionTimeout=6 enableLookups=false maxPostSize=2097152 maxSpareThreads=10 maxThreads=30 minSpareThreads=5 port=8006 protocol=AJP/1.3 tcpNoDelay=true / Mentioned below are the settings for JNDI resource configured in conf/context.xml: Resource name=jdbc/onlinedb auth=Container type=javax.sql.DataSource driverClassName=oracle.jdbc.OracleDriver url=jdbc:oracle:thin:@192.168.12.10:1521:WEBDB initialSize=1 maxActive=30 minIdle=1 maxIdle=5 maxWait=30 poolPreparedStatements=true maxOpenPreparedStatements=300 validationQuery=SELECT 1 FROM BB_DUAL testOnBorrow=true validationInterval=1 testWhileIdle=true / JVM Parameters: -Xms512m -Xmx2048m -XX:PermSize=128m -XX:MaxPermSize=256m -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/logs/WL2TC/app/ -verbose:gc -Xloggc:/logs/WL2TC/app/WL2TC_1-gc.log It must be noted that Weblogic setup performs very well using similar settings. Garbage Collection: While the load test is running,
RE: Tomcat Performance Turning.
WE GENERATE REPORT ON NETWORK BACKLOG USING ADVANCED TOOLS, WHICH INDICATE NEGLIGIBLE NETWORK DELAY. AT ONE POINT TO TIME THIS WAS AN ISSUE. WE INCREASED THE BANDWIDTH FROM 45 MBPS TO 100 MBPS WHICH RESOLVED THE ISSUE. THANKS, TALHA. -Original Message- From: Caldarale, Charles R [mailto:chuck.caldar...@unisys.com] Sent: Friday, September 02, 2011 9:16 AM To: Tomcat Users List Subject: RE: Tomcat Performance Turning. From: Talha Fazal [mailto:tfa...@credera.com] Subject: RE: Tomcat Performance Turning. We did take a thread dump and we found a lot of threads locked. http-8014-9 daemon prio=10 tid=0x60965c00 nid=0x6c83 in Object.wait() at org.apache.tomcat.util.net.JIoEndpoint$Worker.await(JIoEndpoint.java:458) Often, a throughput problem is not the many, but just one that is holding all of the others up. The example you cite above is simply a thread waiting for something to do. Do you perhaps have a network problem, where requests are simply not getting delivered to httpd or Tomcat in a timely fashion? - 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 - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat Performance Turning.
Hello Talha, well... the quickshots are through. You should really create some threaddumps after each other (for example with jstack) and try to find out which thread is slowing the app down. For starters you could try with code you changed for tomcat adaptations if any. The problem seems to lie beneath the surface, so you will have to start performance monitoring and look into the inside. However, time difference of 17 seconds must be something very very obvious like a synchronized block in a valve/filter, db lock (have you checked the db locks?), or an if (tomcat) Thread.sleep(1000L*60*17); regards Leon On Fri, Sep 2, 2011 at 4:21 PM, Talha Fazal tfa...@credera.com wrote: Hi Leon, Please see any answers in CAPS below. -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 9:06 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Hello Talha, seems that your tomcats are fine. Question, you mention that the tomcat do not perform, but you don't tell us how you come to this conclusion except for cpu load. ANSWER: LOOKING INTO THE TOMCAT ACCESS LOGS, THE RESPONSE TIME (%D) IS HORRIBLE). What is the difference in response times between weblogic and tomcat? ANSWER: FOR PAGES THAT WEBLOGIC SERVES IN 500 ms ON AVERAGE, TOMCAT IS TAKING 17000 ms ON AVERAGE. Maybe your tomcat just perform the job MUCH faster ;-) The thread dump you posted in another reply indicates that your tomcats are idling. Do you have manager installed? NO. With manager you could monitor active connections and requests. Do you have probe installed? YES, WE HAVE IT INSTALLED. A LOT OF THREADS ARE IDLING IS WHAT WE OBSERVE. Finally, if you really want to profile your application, do you have moskito installed? :-) (the one i initially wrote -moskito.anotheria.net, therefore the shameless advertisement). :-) SURE WILL GIVE IT A TRY [TIME PERMITTING]. In the last case I can offer you to provide support getting it running. WILL LET YOU KNOW IF WE ARE INTERESTED. THANKS. regards Leon On Fri, Sep 2, 2011 at 3:50 PM, Talha Fazal tfa...@credera.com wrote: Plz. see my answers below in UPPERCAPS. Thanks! -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 8:35 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Hello Talha, from a quick glance at your post, do you have the same 30 max threads limit in weblogic? YES. Because sending 525 users through 2x30=60 max threads seems a little bottlenecky. I FORGOT TO MENTION THAT ON EACH TOMCAT SERVER, WE ARE RUNNING 3 INSTANCES OF TOMCAT ON EACH OF OUR TOMCAT SERVERS (2 SERVERS), THUS 2*3*30=180 maxThreads. WE EVEN INCREASED THE maxThreads TO 120 FOR EACH INSTANCE (thus 120*6=720 maxThreads), AND MATCHED maxActive IN JNDI RESOURCE TO 120, BUT WE STILL DIDN'T SEE CONSIDERABLE IMPROVEMENT. THE CPU USAGE INCREASED FROM 7% to 10%. Which software are you using to produce the load? LOADRUNNER. Does it keepalive the connections? YES. regards Leon On Fri, Sep 2, 2011 at 3:31 PM, Talha Fazal tfa...@credera.com wrote: Background: We have a moderately high traffic web application (between 8 to 21 million hits/day) running Apache to serve static content (also to load balance and create a DMZ) and Weblogic to serve dynamic content (Struts 1.1 based Java web application). We are trying to replace Weblogic with Tomcat and we have ported our code to work with Tomcat. All works well in Tomcat in the DEV, QA, and STAGING environment as long as there is no real load. The Issue - Load Testing: In our staging environment for load testing, when we run the load test using 525 concurrent users, the app doesn't perform at all. The CPU usage (on Apache and Tomcat Servers) hovers between 7% to 8%. The database server CPU usage is also between 4 and 5%. Setup for Load Testing: We have setup 2 apache web servers (4 Quad Processors i.e. 16 CPUs each), 2 Tomcat (version 6.0.29) servers (4 Quad Processors i.e. 16 CPUs each). Each server has 32 Gb ram. We are using AJP 1.3 to connect Tomcat and Apache. Mentioned below is the version information: Apache Version 2.2.14 (with mod_jk module) Tomcat: 6.0.29 Database: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bits Connection Pool: DBCP. Mentioned below are connector settings in conf/server.xml: Connector address=stagingTCserver01 backlog=300 connectionTimeout=6 enableLookups=false maxPostSize=2097152 maxSpareThreads=10 maxThreads=30 minSpareThreads=5 port=8006 protocol=AJP/1.3 tcpNoDelay=true / Mentioned below are the settings for JNDI resource configured in conf/context.xml: Resource name=jdbc/onlinedb auth=Container type=javax.sql.DataSource
Re: Tomcat Performance Turning.
Have you ruled out issues with db connection pooling? You might consider setting your dbcp maxWait to 8000 or less and watch for timeout waiting for idle object exceptions. Also, you could monitor database connections/active-users on the DB side to see if your dbcp pools are max'd but all the database users/connections are idle. These can be symptoms of an application mis-managing its dbcp pools. From: Leon Rosenberg rosenberg.l...@gmail.com To: Tomcat Users List users@tomcat.apache.org Sent: Friday, September 2, 2011 7:55 AM Subject: Re: Tomcat Performance Turning. Hello Talha, well... the quickshots are through. You should really create some threaddumps after each other (for example with jstack) and try to find out which thread is slowing the app down. For starters you could try with code you changed for tomcat adaptations if any. The problem seems to lie beneath the surface, so you will have to start performance monitoring and look into the inside. However, time difference of 17 seconds must be something very very obvious like a synchronized block in a valve/filter, db lock (have you checked the db locks?), or an if (tomcat) Thread.sleep(1000L*60*17); regards Leon On Fri, Sep 2, 2011 at 4:21 PM, Talha Fazal tfa...@credera.com wrote: Hi Leon, Please see any answers in CAPS below. -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 9:06 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Hello Talha, seems that your tomcats are fine. Question, you mention that the tomcat do not perform, but you don't tell us how you come to this conclusion except for cpu load. ANSWER: LOOKING INTO THE TOMCAT ACCESS LOGS, THE RESPONSE TIME (%D) IS HORRIBLE). What is the difference in response times between weblogic and tomcat? ANSWER: FOR PAGES THAT WEBLOGIC SERVES IN 500 ms ON AVERAGE, TOMCAT IS TAKING 17000 ms ON AVERAGE. Maybe your tomcat just perform the job MUCH faster ;-) The thread dump you posted in another reply indicates that your tomcats are idling. Do you have manager installed? NO. With manager you could monitor active connections and requests. Do you have probe installed? YES, WE HAVE IT INSTALLED. A LOT OF THREADS ARE IDLING IS WHAT WE OBSERVE. Finally, if you really want to profile your application, do you have moskito installed? :-) (the one i initially wrote -moskito.anotheria.net, therefore the shameless advertisement). :-) SURE WILL GIVE IT A TRY [TIME PERMITTING]. In the last case I can offer you to provide support getting it running. WILL LET YOU KNOW IF WE ARE INTERESTED. THANKS. regards Leon On Fri, Sep 2, 2011 at 3:50 PM, Talha Fazal tfa...@credera.com wrote: Plz. see my answers below in UPPERCAPS. Thanks! -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 8:35 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Hello Talha, from a quick glance at your post, do you have the same 30 max threads limit in weblogic? YES. Because sending 525 users through 2x30=60 max threads seems a little bottlenecky. I FORGOT TO MENTION THAT ON EACH TOMCAT SERVER, WE ARE RUNNING 3 INSTANCES OF TOMCAT ON EACH OF OUR TOMCAT SERVERS (2 SERVERS), THUS 2*3*30=180 maxThreads. WE EVEN INCREASED THE maxThreads TO 120 FOR EACH INSTANCE (thus 120*6=720 maxThreads), AND MATCHED maxActive IN JNDI RESOURCE TO 120, BUT WE STILL DIDN'T SEE CONSIDERABLE IMPROVEMENT. THE CPU USAGE INCREASED FROM 7% to 10%. Which software are you using to produce the load? LOADRUNNER. Does it keepalive the connections? YES. regards Leon On Fri, Sep 2, 2011 at 3:31 PM, Talha Fazal tfa...@credera.com wrote: Background: We have a moderately high traffic web application (between 8 to 21 million hits/day) running Apache to serve static content (also to load balance and create a DMZ) and Weblogic to serve dynamic content (Struts 1.1 based Java web application). We are trying to replace Weblogic with Tomcat and we have ported our code to work with Tomcat. All works well in Tomcat in the DEV, QA, and STAGING environment as long as there is no real load. The Issue - Load Testing: In our staging environment for load testing, when we run the load test using 525 concurrent users, the app doesn't perform at all. The CPU usage (on Apache and Tomcat Servers) hovers between 7% to 8%. The database server CPU usage is also between 4 and 5%. Setup for Load Testing: We have setup 2 apache web servers (4 Quad Processors i.e. 16 CPUs each), 2 Tomcat (version 6.0.29) servers (4 Quad Processors i.e. 16 CPUs each). Each server has 32 Gb ram. We are using AJP 1.3 to connect Tomcat and Apache. Mentioned below is the version information: Apache Version 2.2.14 (with mod_jk module) Tomcat: 6.0.29 Database: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0
Changing bit-ness of JRE that TC uses
What would I need to do to change TC 7.0.20 from using a 64-bit JRE to a 32-bit one on a 64-bit windows 2008 machine? I tried changing the JVM setting in tomcat7w, but the service wouldn't start. What else do I need to change? D - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Changing bit-ness of JRE that TC uses
On 02/09/2011 17:01, David kerber wrote: What would I need to do to change TC 7.0.20 from using a 64-bit JRE to a 32-bit one on a 64-bit windows 2008 machine? I tried changing the JVM setting in tomcat7w, but the service wouldn't start. What else do I need to change? If you are running as a service you need to change tomcat7.exe. If you are using APR, you need to change tcnative-1.dll as well. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Changing bit-ness of JRE that TC uses
On 9/2/2011 12:04 PM, Mark Thomas wrote: On 02/09/2011 17:01, David kerber wrote: What would I need to do to change TC 7.0.20 from using a 64-bit JRE to a 32-bit one on a 64-bit windows 2008 machine? I tried changing the JVM setting in tomcat7w, but the service wouldn't start. What else do I need to change? If you are running as a service you need to change tomcat7.exe. If you are using APR, you need to change tcnative-1.dll as well. Thanks! - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat Performance Turning.
PLEASE SEE MY ANSWERS BELOW IN UPPER CAPS. ONE IMPORTANT OBSERVATION: Even though, tomcat's response time is decent, for some reason, apache is taking a lot longer to serve requests. We are using mod_jk with Tomcat using AJP1.3 protocol in the connector setting in server.xml. We plan to try mod_proxy_ajp and mod_proxy instead of mod_jk. Any thoughts here? Thanks, -Original Message- From: R Batchelor [mailto:rsbat...@yahoo.com] Sent: Friday, September 02, 2011 10:10 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Have you ruled out issues with db connection pooling? NO. IN FACT, THERE ARE KNOWN DBCP CONNECTION POOLING DEADLOCK ISSUES IN TOMCAT 6.0.26 [https://issues.apache.org/jira/browse/DBCP-270]. I AM LOBBYING TO UPGRADE TO TOMCAT 7.0.20 AND USE THE JDBC CONNECTION POOL INSTEAD OF DBCP CONNECTION POOL. You might consider setting your dbcp maxWait to 8000 or less and watch for timeout waiting for idle object exceptions. Also, you could monitor database connections/active-users on the DB side to see if your dbcp pools are max'd but all the database users/connections are idle. These can be symptoms of an application mis-managing its dbcp pools. I WILL DEFINITELY TRY THIS OUT. THANKS! From: Leon Rosenberg rosenberg.l...@gmail.com To: Tomcat Users List users@tomcat.apache.org Sent: Friday, September 2, 2011 7:55 AM Subject: Re: Tomcat Performance Turning. Hello Talha, well... the quickshots are through. You should really create some threaddumps after each other (for example with jstack) and try to find out which thread is slowing the app down. For starters you could try with code you changed for tomcat adaptations if any. The problem seems to lie beneath the surface, so you will have to start performance monitoring and look into the inside. However, time difference of 17 seconds must be something very very obvious like a synchronized block in a valve/filter, db lock (have you checked the db locks?), or an if (tomcat) Thread.sleep(1000L*60*17); regards Leon On Fri, Sep 2, 2011 at 4:21 PM, Talha Fazal tfa...@credera.com wrote: Hi Leon, Please see any answers in CAPS below. -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 9:06 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Hello Talha, seems that your tomcats are fine. Question, you mention that the tomcat do not perform, but you don't tell us how you come to this conclusion except for cpu load. ANSWER: LOOKING INTO THE TOMCAT ACCESS LOGS, THE RESPONSE TIME (%D) IS HORRIBLE). What is the difference in response times between weblogic and tomcat? ANSWER: FOR PAGES THAT WEBLOGIC SERVES IN 500 ms ON AVERAGE, TOMCAT IS TAKING 17000 ms ON AVERAGE. Maybe your tomcat just perform the job MUCH faster ;-) The thread dump you posted in another reply indicates that your tomcats are idling. Do you have manager installed? NO. With manager you could monitor active connections and requests. Do you have probe installed? YES, WE HAVE IT INSTALLED. A LOT OF THREADS ARE IDLING IS WHAT WE OBSERVE. Finally, if you really want to profile your application, do you have moskito installed? :-) (the one i initially wrote -moskito.anotheria.net, therefore the shameless advertisement). :-) SURE WILL GIVE IT A TRY [TIME PERMITTING]. In the last case I can offer you to provide support getting it running. WILL LET YOU KNOW IF WE ARE INTERESTED. THANKS. regards Leon On Fri, Sep 2, 2011 at 3:50 PM, Talha Fazal tfa...@credera.com wrote: Plz. see my answers below in UPPERCAPS. Thanks! -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 8:35 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Hello Talha, from a quick glance at your post, do you have the same 30 max threads limit in weblogic? YES. Because sending 525 users through 2x30=60 max threads seems a little bottlenecky. I FORGOT TO MENTION THAT ON EACH TOMCAT SERVER, WE ARE RUNNING 3 INSTANCES OF TOMCAT ON EACH OF OUR TOMCAT SERVERS (2 SERVERS), THUS 2*3*30=180 maxThreads. WE EVEN INCREASED THE maxThreads TO 120 FOR EACH INSTANCE (thus 120*6=720 maxThreads), AND MATCHED maxActive IN JNDI RESOURCE TO 120, BUT WE STILL DIDN'T SEE CONSIDERABLE IMPROVEMENT. THE CPU USAGE INCREASED FROM 7% to 10%. Which software are you using to produce the load? LOADRUNNER. Does it keepalive the connections? YES. regards Leon On Fri, Sep 2, 2011 at 3:31 PM, Talha Fazal tfa...@credera.com wrote: Background: We have a moderately high traffic web application (between 8 to 21 million hits/day) running Apache to serve static content (also to load balance and create a DMZ) and Weblogic to serve dynamic content (Struts 1.1 based Java web application). We are trying to replace Weblogic with Tomcat and we have ported our code to work
Re: Is it possible turn off autoincrement the port of AJP when tomcat start and port configured is in use ?
2011/9/2 Javier Barroso javibarr...@gmail.com: That mean that I can use channelSocket.maxPort in tomcat 6.0.20 ? I read about an new alias maxport, but I suppose I can use still channelSocket.maxPort. Only if you are lucky, because it depends whether port or maxPort is set first (in that old version of Tomcat). https://issues.apache.org/bugzilla/show_bug.cgi?id=49521 You may have better luck with upgrading *.sh scripts in bin and enabling CATALINA_PID file. Later versions of those scripts do check whether other instance is running before starting Tomcat using the value in CATALINA_PID file. It might be easier to you than upgrading Tomcat itself. Upgrading all tomcats here could be a problem with applications :( 1. Upgrading 6.0.x to 6.0.y there should not be any issues in applications. The following web form allows to compare configuration files between releases: http://tomcat.apache.org/migration.html#Tomcat_6.0.x_configuration_file_differences 2. If you keep using the old version you should consider the issues listed on http://tomcat.apache.org/security-6.html Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat Performance Turning.
Hello Talha, On Fri, Sep 2, 2011 at 6:16 PM, Talha Fazal tfa...@credera.com wrote: PLEASE SEE MY ANSWERS BELOW IN UPPER CAPS. ONE IMPORTANT OBSERVATION: Even though, tomcat's response time is decent, for some reason, apache is taking a lot longer to serve requests. We are using mod_jk with Tomcat using AJP1.3 protocol in the connector setting in server.xml. We plan to try mod_proxy_ajp and mod_proxy instead of mod_jk. Any thoughts here? Interesting observation. Have you tried running directly against tomcat without apache inbetween? holywarfrom my experience there is no need for apache in your setup anyway /holywar. In the past we used both mod_jk and mod_proxy_ajp, and even mod_proxy_ajp is somewhat faster, the difference where never 17 seconds. Your best guess would probably be to test without httpd to rule out if tomcat or httpd is the bottleneck. regards Leon Thanks, -Original Message- From: R Batchelor [mailto:rsbat...@yahoo.com] Sent: Friday, September 02, 2011 10:10 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Have you ruled out issues with db connection pooling? NO. IN FACT, THERE ARE KNOWN DBCP CONNECTION POOLING DEADLOCK ISSUES IN TOMCAT 6.0.26 [https://issues.apache.org/jira/browse/DBCP-270]. I AM LOBBYING TO UPGRADE TO TOMCAT 7.0.20 AND USE THE JDBC CONNECTION POOL INSTEAD OF DBCP CONNECTION POOL. You might consider setting your dbcp maxWait to 8000 or less and watch for timeout waiting for idle object exceptions. Also, you could monitor database connections/active-users on the DB side to see if your dbcp pools are max'd but all the database users/connections are idle. These can be symptoms of an application mis-managing its dbcp pools. I WILL DEFINITELY TRY THIS OUT. THANKS! From: Leon Rosenberg rosenberg.l...@gmail.com To: Tomcat Users List users@tomcat.apache.org Sent: Friday, September 2, 2011 7:55 AM Subject: Re: Tomcat Performance Turning. Hello Talha, well... the quickshots are through. You should really create some threaddumps after each other (for example with jstack) and try to find out which thread is slowing the app down. For starters you could try with code you changed for tomcat adaptations if any. The problem seems to lie beneath the surface, so you will have to start performance monitoring and look into the inside. However, time difference of 17 seconds must be something very very obvious like a synchronized block in a valve/filter, db lock (have you checked the db locks?), or an if (tomcat) Thread.sleep(1000L*60*17); regards Leon On Fri, Sep 2, 2011 at 4:21 PM, Talha Fazal tfa...@credera.com wrote: Hi Leon, Please see any answers in CAPS below. -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 9:06 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Hello Talha, seems that your tomcats are fine. Question, you mention that the tomcat do not perform, but you don't tell us how you come to this conclusion except for cpu load. ANSWER: LOOKING INTO THE TOMCAT ACCESS LOGS, THE RESPONSE TIME (%D) IS HORRIBLE). What is the difference in response times between weblogic and tomcat? ANSWER: FOR PAGES THAT WEBLOGIC SERVES IN 500 ms ON AVERAGE, TOMCAT IS TAKING 17000 ms ON AVERAGE. Maybe your tomcat just perform the job MUCH faster ;-) The thread dump you posted in another reply indicates that your tomcats are idling. Do you have manager installed? NO. With manager you could monitor active connections and requests. Do you have probe installed? YES, WE HAVE IT INSTALLED. A LOT OF THREADS ARE IDLING IS WHAT WE OBSERVE. Finally, if you really want to profile your application, do you have moskito installed? :-) (the one i initially wrote -moskito.anotheria.net, therefore the shameless advertisement). :-) SURE WILL GIVE IT A TRY [TIME PERMITTING]. In the last case I can offer you to provide support getting it running. WILL LET YOU KNOW IF WE ARE INTERESTED. THANKS. regards Leon On Fri, Sep 2, 2011 at 3:50 PM, Talha Fazal tfa...@credera.com wrote: Plz. see my answers below in UPPERCAPS. Thanks! -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 8:35 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Hello Talha, from a quick glance at your post, do you have the same 30 max threads limit in weblogic? YES. Because sending 525 users through 2x30=60 max threads seems a little bottlenecky. I FORGOT TO MENTION THAT ON EACH TOMCAT SERVER, WE ARE RUNNING 3 INSTANCES OF TOMCAT ON EACH OF OUR TOMCAT SERVERS (2 SERVERS), THUS 2*3*30=180 maxThreads. WE EVEN INCREASED THE maxThreads TO 120 FOR EACH INSTANCE (thus 120*6=720 maxThreads), AND MATCHED maxActive IN JNDI RESOURCE TO 120, BUT WE STILL DIDN'T SEE CONSIDERABLE IMPROVEMENT. THE CPU USAGE
Re: Is it possible turn off autoincrement the port of AJP when tomcat start and port configured is in use ?
On Fri, Sep 2, 2011 at 9:26 PM, Konstantin Kolinko knst.koli...@gmail.com wrote: 2011/9/2 Javier Barroso javibarr...@gmail.com: That mean that I can use channelSocket.maxPort in tomcat 6.0.20 ? I read about an new alias maxport, but I suppose I can use still channelSocket.maxPort. Only if you are lucky, because it depends whether port or maxPort is set first (in that old version of Tomcat). https://issues.apache.org/bugzilla/show_bug.cgi?id=49521 You may have better luck with upgrading *.sh scripts in bin and enabling CATALINA_PID file. Later versions of those scripts do check whether other instance is running before starting Tomcat using the value in CATALINA_PID file. It might be easier to you than upgrading Tomcat itself. Ok, I guess I should not have many problem from tomcat point of view (we have a very basic (well, somethings are cluster configured and that is not basic (should all tomcat from cluster have the same version, or I can update one by one?))), but our customers tell us tested with tomcat 6.0.xx (where xx is fixed) .. Upgrading all tomcats here could be a problem with applications :( 1. Upgrading 6.0.x to 6.0.y there should not be any issues in applications. The following web form allows to compare configuration files between releases: http://tomcat.apache.org/migration.html#Tomcat_6.0.x_configuration_file_differences Thank you for that link! It seems very useful 2. If you keep using the old version you should consider the issues listed on http://tomcat.apache.org/security-6.html Ok, I could use that as excuses for my boss (they say (if work, don't touch)) Thank you very much! - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Tomcat Performance Turning.
Q. Have you tried running directly against tomcat without apache inbetween? A. Yes; this resolves the performance bottleneck. Q. holywarfrom my experience there is no need for apache in your setup anyway /holywar. A. :-) The reasons for having apache in front: A) Create a DMZ and protect Tomcat from being exposed to outside attacks; B) Load balancing. Thanks Leon! -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 3:19 PM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Hello Talha, On Fri, Sep 2, 2011 at 6:16 PM, Talha Fazal tfa...@credera.com wrote: PLEASE SEE MY ANSWERS BELOW IN UPPER CAPS. ONE IMPORTANT OBSERVATION: Even though, tomcat's response time is decent, for some reason, apache is taking a lot longer to serve requests. We are using mod_jk with Tomcat using AJP1.3 protocol in the connector setting in server.xml. We plan to try mod_proxy_ajp and mod_proxy instead of mod_jk. Any thoughts here? Interesting observation. Have you tried running directly against tomcat without apache inbetween? holywarfrom my experience there is no need for apache in your setup anyway /holywar. In the past we used both mod_jk and mod_proxy_ajp, and even mod_proxy_ajp is somewhat faster, the difference where never 17 seconds. Your best guess would probably be to test without httpd to rule out if tomcat or httpd is the bottleneck. regards Leon Thanks, -Original Message- From: R Batchelor [mailto:rsbat...@yahoo.com] Sent: Friday, September 02, 2011 10:10 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Have you ruled out issues with db connection pooling? NO. IN FACT, THERE ARE KNOWN DBCP CONNECTION POOLING DEADLOCK ISSUES IN TOMCAT 6.0.26 [https://issues.apache.org/jira/browse/DBCP-270]. I AM LOBBYING TO UPGRADE TO TOMCAT 7.0.20 AND USE THE JDBC CONNECTION POOL INSTEAD OF DBCP CONNECTION POOL. You might consider setting your dbcp maxWait to 8000 or less and watch for timeout waiting for idle object exceptions. Also, you could monitor database connections/active-users on the DB side to see if your dbcp pools are max'd but all the database users/connections are idle. These can be symptoms of an application mis-managing its dbcp pools. I WILL DEFINITELY TRY THIS OUT. THANKS! From: Leon Rosenberg rosenberg.l...@gmail.com To: Tomcat Users List users@tomcat.apache.org Sent: Friday, September 2, 2011 7:55 AM Subject: Re: Tomcat Performance Turning. Hello Talha, well... the quickshots are through. You should really create some threaddumps after each other (for example with jstack) and try to find out which thread is slowing the app down. For starters you could try with code you changed for tomcat adaptations if any. The problem seems to lie beneath the surface, so you will have to start performance monitoring and look into the inside. However, time difference of 17 seconds must be something very very obvious like a synchronized block in a valve/filter, db lock (have you checked the db locks?), or an if (tomcat) Thread.sleep(1000L*60*17); regards Leon On Fri, Sep 2, 2011 at 4:21 PM, Talha Fazal tfa...@credera.com wrote: Hi Leon, Please see any answers in CAPS below. -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 9:06 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning. Hello Talha, seems that your tomcats are fine. Question, you mention that the tomcat do not perform, but you don't tell us how you come to this conclusion except for cpu load. ANSWER: LOOKING INTO THE TOMCAT ACCESS LOGS, THE RESPONSE TIME (%D) IS HORRIBLE). What is the difference in response times between weblogic and tomcat? ANSWER: FOR PAGES THAT WEBLOGIC SERVES IN 500 ms ON AVERAGE, TOMCAT IS TAKING 17000 ms ON AVERAGE. Maybe your tomcat just perform the job MUCH faster ;-) The thread dump you posted in another reply indicates that your tomcats are idling. Do you have manager installed? NO. With manager you could monitor active connections and requests. Do you have probe installed? YES, WE HAVE IT INSTALLED. A LOT OF THREADS ARE IDLING IS WHAT WE OBSERVE. Finally, if you really want to profile your application, do you have moskito installed? :-) (the one i initially wrote -moskito.anotheria.net, therefore the shameless advertisement). :-) SURE WILL GIVE IT A TRY [TIME PERMITTING]. In the last case I can offer you to provide support getting it running. WILL LET YOU KNOW IF WE ARE INTERESTED. THANKS. regards Leon On Fri, Sep 2, 2011 at 3:50 PM, Talha Fazal tfa...@credera.com wrote: Plz. see my answers below in UPPERCAPS. Thanks! -Original Message- From: Leon Rosenberg [mailto:rosenberg.l...@gmail.com] Sent: Friday, September 02, 2011 8:35 AM To: Tomcat Users List Subject: Re: Tomcat Performance Turning.
Re: Form Authentication and status (response) code
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Jess, On 9/1/2011 7:06 PM, Jess Holle wrote: So form-based authentication is an obnoxious mutt -- but a mutt that everyone seems to have fallen in love with. This isn't Tomcat's fault, however, and Tomcat is doing the normal thing by returning a 200 here. The servlet spec (section 13.6.3 Form Based Authentication) has the whole process laid out, except that they don't say what the HTTP response code should be when a request for a protected resource arrives and the login form should be sent to the client. Later, it says: If authentication fails, the error page is returned using either a forward or a redirect, and the status code of the response is set to 200. Ignoring the fact that you can't do a redirect using a 200 response, it's clear that there is no unauthenticated or forbidden response code to be used, here. Presumably, the decision to use response code 200 was drawn from this section as well as practical considerations (being able to prohibit the login form from being directly accessible to remote clients for instance) and past user input (I think Tomcat used to issue a redirect, but now does an internal forward and responds with 200). - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk5hTEwACgkQ9CaO5/Lv0PBpKACbB5A+XQ42NDT9gHSgR7jCDEAz 5i0An2JZMwf+jrrpwuQrk6AtDWbpOYpN =XYT8 -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat Performance Turning.
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Leon, On 9/2/2011 4:19 PM, Leon Rosenberg wrote: holywarfrom my experience there is no need for apache in your setup anyway /holywar. Uh, load-balancing? - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk5hUDgACgkQ9CaO5/Lv0PBfhQCdFwEDvm37L9QTe6FBns88RKLg 7ukAnikbIxI+y/oaskk/Zv/Y4aKPpYD9 =Dc+M -END PGP SIGNATURE- - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Servlet 3.0 File Upload
Hi, I have a working file upload servlet, with the exception that it calls the uploaded file samplefile instead of using the name of the file. So if I upload different files, they all overwrite each other. Any ideas on how to fix this? I used this tutorial to get it working: http://www.servletworld.com/servlet-tutorials/servlet3/multipartconfig-file-upload-example.html TIA, - Ole - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Servlet 3.0 File Upload
Never mind...I see the example hard codes the name of the file. Sorry for the noise. On 09/02/2011 05:50 PM, Ole Ersoy wrote: Hi, I have a working file upload servlet, with the exception that it calls the uploaded file samplefile instead of using the name of the file. So if I upload different files, they all overwrite each other. Any ideas on how to fix this? I used this tutorial to get it working: http://www.servletworld.com/servlet-tutorials/servlet3/multipartconfig-file-upload-example.html TIA, - Ole - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: CGIServlet - php
Hi all: An update I entered the following directly into my browser: http://localhost:8080/secondDynamicWeb/cgi-bin/echoInfo.php And got the a 404 Error - Servlet CGI not available. From this it appears that the servlet is not available but has been defined because the URL pattern /cgi-bin/ appears to call the Servlet as defined in the web.xml Which I have set as follows: servlet servlet-namecgi/servlet-name servlet-classorg.apache.catalina.servlets.CGIServlet/servlet-class init-param param-namedebug/param-name param-value6/param-value /init-param init-param param-namecgiPathPrefix/param-name param-valueWEB-INF/cgi/param-value /init-param init-param param-nameexecutable/param-name param-value/param-value /init-param load-on-startup5/load-on-startup /servlet AND servlet-mapping servlet-namecgi/servlet-name url-pattern/cgi-bin/*/url-pattern /servlet-mapping I would appreciate any advice you might offer. TC -- View this message in context: http://old.nabble.com/CGIServlet---php-tp32390310p32390388.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: CGIServlet - php
On Fri, Sep 2, 2011 at 5:06 PM, throwsCode donmillho...@yahoo.com wrote: I'm trying to implement PHP on tomcat 7.0.20 Dear god, why? I would rather duct-tape rabid weasels inside my shorts than do, well, anything with PHP again, but if you must -- just use Apache HTTPD. Seriously. -- Hassan Schroeder hassan.schroe...@gmail.com http://about.me/hassanschroeder twitter: @hassan - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: CGIServlet - php
Hi Hassan: I am predominantly a JSF/Facelets/IceFaces developer but recently I have been asked to assist some non-profits which calls for php. I would like to use my existing development environment which is Eclipse and Tomcat. If I can discover the secrets to php in Tomcat that would be the best for me. I really hate when everyone says they support a particular framework or language but provide no examples and sketchy instructions. It would be nice to be a part of a large organization with expertise in each and every area. I'll work on it for another day or two before I abandon the Tomcat approach. Thanks for you comments. TC -- View this message in context: http://old.nabble.com/CGIServlet---php-tp32390310p32390812.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: CGIServlet - php
On Fri, Sep 2, 2011 at 9:25 PM, throwsCode donmillho...@yahoo.com wrote: I am predominantly a JSF/Facelets/IceFaces developer but recently I have been asked to assist some non-profits which calls for php. Yeah, that's similar to how I got sucked into doing PHP too :-) (Fool me once, shame on me yadda yadda...) I would like to use my existing development environment which is Eclipse and Tomcat. Mmm. I also don't care much for Eclipse, but in case you want to try something else, I believe NetBeans has had more PHP focus since Oracle bought Sun. At the least, trying it might give you some ideas. Also, google `php quercus` for an alternative to CGI-based solutions. Good luck :-) -- Hassan Schroeder hassan.schroe...@gmail.com http://about.me/hassanschroeder twitter: @hassan - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
