RE: 20 Tips for Using Tomcat in Production
Maybe it should also be noted that the service installation batch file that comes with the Tomcat's Windows binaries distribution (the zipped one) defaults to the server JVM, if available. The same should happen with the so called service installer version (the exe one) but I didn't check which jvm it defaults to.. though it is able to download the APR dll, so I don't see why it should make the service point to the client jvm instead. :-) Hope it helps -Original Message- From: Milanez, Marcus [mailto:[EMAIL PROTECTED] Sent: 22 August 2007 13:59 To: Tomcat Users List Subject: RES: 20 Tips for Using Tomcat in Production If you are running tomcat under windows services, you can select which JVM you want to use through bin/tomcatXw.exe. -Mensagem original- De: Karel V Sedlacek [mailto:[EMAIL PROTECTED] Enviada em: quarta-feira, 22 de agosto de 2007 08:19 Para: Tomcat Users List Assunto: Re: 20 Tips for Using Tomcat in Production Thanks for this info,... How do I implement this tip? #18. Use the -server JVM option. This enables the server JVM, which JIT compiles bytecode much earlier, and with stronger optimizations. Startup and first calls will be slower due to JIT compilation taking more time, but subsequent ones will be faster. Karel In putting #1 into the JAVA_OPTS (which it appears that is the CATALINA_OPTS for our implementation), it doesn't appear to work, as Tomcat doesn't restart. It could be our version -- which is currently 5.0.30. please let me know if there are other steps we need to take here as well. thanks, Kim :-) On 8/21/07, Shane Witbeck [EMAIL PROTECTED] wrote: I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in- production/ - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] ---AV Spam Filtering by M+Guardian - Risk Free Email (TM)--- - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: 20 Tips for Using Tomcat in Production
IMHO the only good reason to move a library out from an application and place it into /common/lib (or /lib) is to get advantage of connection pooling. http://tomcat.apache.org/tomcat-5.5-doc/jndi-resources-howto.html Then, yes, if you have different database versions you might find yourself in the usual library versions nightmare.. :-) -Original Message- From: Diego Yasuhiko Kurisaki [mailto:[EMAIL PROTECTED] Sent: 22 August 2007 00:35 To: Tomcat Users List Subject: Re: 20 Tips for Using Tomcat in Production I agree, i'm not willing to pay the management overhead of putting my shared libraries to the tomcat common lib, unless my gains are very big in terms of memory consumption. I don't really think you should change for another one though, but you can make regards about the cons of that approach. Anyway, great work 5 stars. On 8/21/07, Ben Souther [EMAIL PROTECTED] wrote: From: Christopher Schultz I also agree with David and, uh, David, that #6 is a little dubious. Yes, moving shared libraries into the common/lib directory will save you some memory, but it creates a management headache when it comes to version numbers, WAR packaging, etc. Ideally, the WAR contains everything the webapp needs. If you rely on the servlet container to provide essential libraries, you are changing your deployment strategy significantly. +1 Starting with Servlet Spec 2.3 (I think) there has been an emphasis on putting everything a web app needs to run into its war file. To put include something that runs contrary to this 'best practice' in an article of tips at this point in time doesn't sound like a good idea. I would seriously consider replacing that one with something else. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Diego Yasuhiko Kurisaki ---AV Spam Filtering by M+Guardian - Risk Free Email (TM)--- - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
Incidentally - since we are talking about pooling - should the executor configuration be a tip? It allows the connectors to share a single thread pool, rather than each connector having its own. This seems like a memory and performance slurpee to me. Cheers, - Ole myrealbruno wrote: IMHO the only good reason to move a library out from an application and place it into /common/lib (or /lib) is to get advantage of connection pooling. http://tomcat.apache.org/tomcat-5.5-doc/jndi-resources-howto.html Then, yes, if you have different database versions you might find yourself in the usual library versions nightmare.. :-) -Original Message- From: Diego Yasuhiko Kurisaki [mailto:[EMAIL PROTECTED] Sent: 22 August 2007 00:35 To: Tomcat Users List Subject: Re: 20 Tips for Using Tomcat in Production I agree, i'm not willing to pay the management overhead of putting my shared libraries to the tomcat common lib, unless my gains are very big in terms of memory consumption. I don't really think you should change for another one though, but you can make regards about the cons of that approach. Anyway, great work 5 stars. On 8/21/07, Ben Souther [EMAIL PROTECTED] wrote: From: Christopher Schultz I also agree with David and, uh, David, that #6 is a little dubious. Yes, moving shared libraries into the common/lib directory will save you some memory, but it creates a management headache when it comes to version numbers, WAR packaging, etc. Ideally, the WAR contains everything the webapp needs. If you rely on the servlet container to provide essential libraries, you are changing your deployment strategy significantly. +1 Starting with Servlet Spec 2.3 (I think) there has been an emphasis on putting everything a web app needs to run into its war file. To put include something that runs contrary to this 'best practice' in an article of tips at this point in time doesn't sound like a good idea. I would seriously consider replacing that one with something else. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Chuck and Ole, Caldarale, Charles R wrote: From: Ole Ersoy [mailto:[EMAIL PROTECTED] Subject: Re: 20 Tips for Using Tomcat in Production Anyone know if there is a way to verify that the jvm is running in server mode? Enable JMX and use JConsole to look inside, or install Lambda Probe and look at its System Information tab. Get Lambda Probe from here: http://www.lambdaprobe.org Or just look at the value for the system property java.vm.name. It should either say Client or Server somewhere in there (at least when using a Sun VM). - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFG1CKX9CaO5/Lv0PARAkV7AKDDs/bTF34kI4wvoZA8gCOYBM1XyQCghXgO e4NZ5zkjCv1wDdFfJ4fRCs0= =3sG/ -END PGP SIGNATURE- - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: 20 Tips for Using Tomcat in Production
From: Christopher Schultz [mailto:[EMAIL PROTECTED] Subject: Re: 20 Tips for Using Tomcat in Production Or just look at the value for the system property java.vm.name. Yes, that's exactly what both JConsole and Lambda Probe do; I was just trying to suggest a mechanism that didn't require writing additional code. - 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 start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
Chuck and Chris, Thank you for the tips! I'll probably code a little servlet that has a peak, but now that I'm aware of Lambda Probe, I just have to play with it :-) Extremely cool toy! Thanks again, - Ole Caldarale, Charles R wrote: From: Christopher Schultz [mailto:[EMAIL PROTECTED] Subject: Re: 20 Tips for Using Tomcat in Production Or just look at the value for the system property java.vm.name. Yes, that's exactly what both JConsole and Lambda Probe do; I was just trying to suggest a mechanism that didn't require writing additional code. - 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 start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
Hi, I'm trying to get the -server option working with jsvc. When inserting -server I get this: [EMAIL PROTECTED] init.d]# service tomcat start Starting tomcat 27/08/2007 21:11:08 10371 jsvc error: Invalid option -server 27/08/2007 21:11:08 10371 jsvc error: Cannot parse command line arguments The script looks like this (Note that if I remove -server tomcat start fine): CATALINA_HOME=/usr/share/apache-tomcat JAVA_HOME=/usr/lib/jvm/java DAEMON_LAUNCHER=$CATALINA_HOME/bin/jsvc TOMCAT_USER=tomcat TMP_DIR=/var/cache/apache-tomcat/temp CATALINA_OPTS=-server CLASSPATH=$JAVA_HOME/lib/tools.jar:$CATALINA_HOME/bin/commons-daemon.jar:$CATALINA_HOME/bin/bootstrap.jar case $1 in start) # # Start Tomcat # echo -n Starting tomcat echo $DAEMON_LAUNCHER -server \ -user $TOMCAT_USER \ -home $JAVA_HOME \ -Dcatalina.home=$CATALINA_HOME \ -Djava.io.tmpdir=$TMP_DIR \ -outfile $CATALINA_HOME/logs/catalina.out \ -errfile '1' \ -cp $CLASSPATH \ org.apache.catalina.startup.Bootstrap # # To get a verbose JVM #-verbose # To get a debug of jsvc. #-debug ;; Any ideas? Thanks, - Ole Karel Sedlacek wrote: OK, let me give this a whirl. Karel At 09:20 AM 8/22/2007, you wrote: See the table in this page. On Windows on i586 java always defaults to client runtime. (amd64 or ia-64 are different) http://java.sun.com/docs/hotspot/gc5.0/ergo5.html If you can set JAVA_OPTS=-server java starts with it. Print System.getProperties() and you can see what runtime is used. Ronald. On Wed Aug 22 14:15:27 CEST 2007 Tomcat Users List users@tomcat.apache.org wrote: I am running a 4 core, 8GB, Server 2003 SP1 EE (not R2) machine. One JRE: 1.5.0_09 Karel as far as i know this option is outdated, hence the vm automatically goes into server mode if it detects a server class machine (=2GB RAM, 2 processors (which also includes ht or dualcore) leon maybe wrong though On 8/22/07, Ben Souther [EMAIL PROTECTED] wrote: It depends on which operating system you're using and how you've installed Tomcat. Can you tell us which it is? On Wed, 2007-08-22 at 07:19, Karel V Sedlacek wrote: Thanks for this info,... How do I implement this tip? #18. Use the -server JVM option. This enables the server JVM, which JIT compiles bytecode much earlier, and with stronger optimizations. Startup and first calls will be slower due to JIT compilation taking more time, but subsequent ones will be faster. Karel In putting #1 into the JAVA_OPTS (which it appears that is the CATALINA_OPTS for our implementation), it doesn't appear to work, as Tomcat doesn't restart. It could be our version -- which is currently 5.0.30. please let me know if there are other steps we need to take here as well. thanks, Kim :-) On 8/21/07, Shane Witbeck [EMAIL PROTECTED] wrote: I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/ Karel Sedlacek [EMAIL PROTECTED] CIT Data Administration Phn 607-255-7742 Cornell University Fax 607-255-1297 Ithaca, NY 14853 - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
Hi, I ran ./jsvc help and notice it had a -jvm option. So I tried this: CATALINA_HOME=/usr/share/apache-tomcat JAVA_HOME=/usr/lib/jvm/java DAEMON_LAUNCHER=$CATALINA_HOME/bin/jsvc TOMCAT_USER=tomcat TMP_DIR=/var/cache/apache-tomcat/temp CLASSPATH=$JAVA_HOME/lib/tools.jar:$CATALINA_HOME/bin/commons-daemon.jar:$CATALINA_HOME/bin/bootstrap.jar case $1 in start) # # Start Tomcat # echo -n Starting tomcat echo $DAEMON_LAUNCHER \ -jvm server \ #This is the good part -user $TOMCAT_USER \ -home $JAVA_HOME \ -Dcatalina.home=$CATALINA_HOME \ -Djava.io.tmpdir=$TMP_DIR \ -outfile $CATALINA_HOME/logs/catalina.out \ -errfile '1' \ -cp $CLASSPATH \ org.apache.catalina.startup.Bootstrap # # To get a verbose JVM #-verbose # To get a debug of jsvc. #-debug ;; And jsvc seems to be cool with it. Anyone know if there is a way to verify that the jvm is running in server mode? Thanks, - Ole Ole Ersoy wrote: Hi, I'm trying to get the -server option working with jsvc. When inserting -server I get this: [EMAIL PROTECTED] init.d]# service tomcat start Starting tomcat 27/08/2007 21:11:08 10371 jsvc error: Invalid option -server 27/08/2007 21:11:08 10371 jsvc error: Cannot parse command line arguments The script looks like this (Note that if I remove -server tomcat start fine): CATALINA_HOME=/usr/share/apache-tomcat JAVA_HOME=/usr/lib/jvm/java DAEMON_LAUNCHER=$CATALINA_HOME/bin/jsvc TOMCAT_USER=tomcat TMP_DIR=/var/cache/apache-tomcat/temp CATALINA_OPTS=-server CLASSPATH=$JAVA_HOME/lib/tools.jar:$CATALINA_HOME/bin/commons-daemon.jar:$CATALINA_HOME/bin/bootstrap.jar case $1 in start) # # Start Tomcat # echo -n Starting tomcat echo $DAEMON_LAUNCHER -server \ -user $TOMCAT_USER \ -home $JAVA_HOME \ -Dcatalina.home=$CATALINA_HOME \ -Djava.io.tmpdir=$TMP_DIR \ -outfile $CATALINA_HOME/logs/catalina.out \ -errfile '1' \ -cp $CLASSPATH \ org.apache.catalina.startup.Bootstrap # # To get a verbose JVM #-verbose # To get a debug of jsvc. #-debug ;; Any ideas? Thanks, - Ole Karel Sedlacek wrote: OK, let me give this a whirl. Karel At 09:20 AM 8/22/2007, you wrote: See the table in this page. On Windows on i586 java always defaults to client runtime. (amd64 or ia-64 are different) http://java.sun.com/docs/hotspot/gc5.0/ergo5.html If you can set JAVA_OPTS=-server java starts with it. Print System.getProperties() and you can see what runtime is used. Ronald. On Wed Aug 22 14:15:27 CEST 2007 Tomcat Users List users@tomcat.apache.org wrote: I am running a 4 core, 8GB, Server 2003 SP1 EE (not R2) machine. One JRE: 1.5.0_09 Karel as far as i know this option is outdated, hence the vm automatically goes into server mode if it detects a server class machine (=2GB RAM, 2 processors (which also includes ht or dualcore) leon maybe wrong though On 8/22/07, Ben Souther [EMAIL PROTECTED] wrote: It depends on which operating system you're using and how you've installed Tomcat. Can you tell us which it is? On Wed, 2007-08-22 at 07:19, Karel V Sedlacek wrote: Thanks for this info,... How do I implement this tip? #18. Use the -server JVM option. This enables the server JVM, which JIT compiles bytecode much earlier, and with stronger optimizations. Startup and first calls will be slower due to JIT compilation taking more time, but subsequent ones will be faster. Karel In putting #1 into the JAVA_OPTS (which it appears that is the CATALINA_OPTS for our implementation), it doesn't appear to work, as Tomcat doesn't restart. It could be our version -- which is currently 5.0.30. please let me know if there are other steps we need to take here as well. thanks, Kim :-) On 8/21/07, Shane Witbeck [EMAIL PROTECTED] wrote: I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/ Karel Sedlacek [EMAIL PROTECTED] CIT Data Administration Phn 607-255-7742 Cornell University Fax 607-255-1297 Ithaca, NY 14853 - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: 20 Tips for Using Tomcat in Production
From: Ole Ersoy [mailto:[EMAIL PROTECTED] Subject: Re: 20 Tips for Using Tomcat in Production Anyone know if there is a way to verify that the jvm is running in server mode? Enable JMX and use JConsole to look inside, or install Lambda Probe and look at its System Information tab. Get Lambda Probe from here: http://www.lambdaprobe.org - 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 start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
Thanks for this info,... How do I implement this tip? #18. Use the -server JVM option. This enables the server JVM, which JIT compiles bytecode much earlier, and with stronger optimizations. Startup and first calls will be slower due to JIT compilation taking more time, but subsequent ones will be faster. Karel In putting #1 into the JAVA_OPTS (which it appears that is the CATALINA_OPTS for our implementation), it doesn't appear to work, as Tomcat doesn't restart. It could be our version -- which is currently 5.0.30. please let me know if there are other steps we need to take here as well. thanks, Kim :-) On 8/21/07, Shane Witbeck [EMAIL PROTECTED] wrote: I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/ - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
It depends on which operating system you're using and how you've installed Tomcat. Can you tell us which it is? On Wed, 2007-08-22 at 07:19, Karel V Sedlacek wrote: Thanks for this info,... How do I implement this tip? #18. Use the -server JVM option. This enables the server JVM, which JIT compiles bytecode much earlier, and with stronger optimizations. Startup and first calls will be slower due to JIT compilation taking more time, but subsequent ones will be faster. Karel In putting #1 into the JAVA_OPTS (which it appears that is the CATALINA_OPTS for our implementation), it doesn't appear to work, as Tomcat doesn't restart. It could be our version -- which is currently 5.0.30. please let me know if there are other steps we need to take here as well. thanks, Kim :-) On 8/21/07, Shane Witbeck [EMAIL PROTECTED] wrote: I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/ - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
as far as i know this option is outdated, hence the vm automatically goes into server mode if it detects a server class machine (=2GB RAM, 2 processors (which also includes ht or dualcore) leon maybe wrong though On 8/22/07, Ben Souther [EMAIL PROTECTED] wrote: It depends on which operating system you're using and how you've installed Tomcat. Can you tell us which it is? On Wed, 2007-08-22 at 07:19, Karel V Sedlacek wrote: Thanks for this info,... How do I implement this tip? #18. Use the -server JVM option. This enables the server JVM, which JIT compiles bytecode much earlier, and with stronger optimizations. Startup and first calls will be slower due to JIT compilation taking more time, but subsequent ones will be faster. Karel In putting #1 into the JAVA_OPTS (which it appears that is the CATALINA_OPTS for our implementation), it doesn't appear to work, as Tomcat doesn't restart. It could be our version -- which is currently 5.0.30. please let me know if there are other steps we need to take here as well. thanks, Kim :-) On 8/21/07, Shane Witbeck [EMAIL PROTECTED] wrote: I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/ - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RES: 20 Tips for Using Tomcat in Production
If you are running tomcat under windows services, you can select which JVM you want to use through bin/tomcatXw.exe. -Mensagem original- De: Karel V Sedlacek [mailto:[EMAIL PROTECTED] Enviada em: quarta-feira, 22 de agosto de 2007 08:19 Para: Tomcat Users List Assunto: Re: 20 Tips for Using Tomcat in Production Thanks for this info,... How do I implement this tip? #18. Use the -server JVM option. This enables the server JVM, which JIT compiles bytecode much earlier, and with stronger optimizations. Startup and first calls will be slower due to JIT compilation taking more time, but subsequent ones will be faster. Karel In putting #1 into the JAVA_OPTS (which it appears that is the CATALINA_OPTS for our implementation), it doesn't appear to work, as Tomcat doesn't restart. It could be our version -- which is currently 5.0.30. please let me know if there are other steps we need to take here as well. thanks, Kim :-) On 8/21/07, Shane Witbeck [EMAIL PROTECTED] wrote: I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in- production/ - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
See the table in this page. On Windows on i586 java always defaults to client runtime. (amd64 or ia-64 are different) http://java.sun.com/docs/hotspot/gc5.0/ergo5.html If you can set JAVA_OPTS=-server java starts with it. Print System.getProperties() and you can see what runtime is used. Ronald. On Wed Aug 22 14:15:27 CEST 2007 Tomcat Users List users@tomcat.apache.org wrote: I am running a 4 core, 8GB, Server 2003 SP1 EE (not R2) machine. One JRE: 1.5.0_09 Karel as far as i know this option is outdated, hence the vm automatically goes into server mode if it detects a server class machine (=2GB RAM, 2 processors (which also includes ht or dualcore) leon maybe wrong though On 8/22/07, Ben Souther [EMAIL PROTECTED] wrote: It depends on which operating system you're using and how you've installed Tomcat. Can you tell us which it is? On Wed, 2007-08-22 at 07:19, Karel V Sedlacek wrote: Thanks for this info,... How do I implement this tip? #18. Use the -server JVM option. This enables the server JVM, which JIT compiles bytecode much earlier, and with stronger optimizations. Startup and first calls will be slower due to JIT compilation taking more time, but subsequent ones will be faster. Karel In putting #1 into the JAVA_OPTS (which it appears that is the CATALINA_OPTS for our implementation), it doesn't appear to work, as Tomcat doesn't restart. It could be our version -- which is currently 5.0.30. please let me know if there are other steps we need to take here as well. thanks, Kim :-) On 8/21/07, Shane Witbeck [EMAIL PROTECTED] wrote: I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/
Re: 20 Tips for Using Tomcat in Production
OK, let me give this a whirl. Karel At 09:20 AM 8/22/2007, you wrote: See the table in this page. On Windows on i586 java always defaults to client runtime. (amd64 or ia-64 are different) http://java.sun.com/docs/hotspot/gc5.0/ergo5.html If you can set JAVA_OPTS=-server java starts with it. Print System.getProperties() and you can see what runtime is used. Ronald. On Wed Aug 22 14:15:27 CEST 2007 Tomcat Users List users@tomcat.apache.org wrote: I am running a 4 core, 8GB, Server 2003 SP1 EE (not R2) machine. One JRE: 1.5.0_09 Karel as far as i know this option is outdated, hence the vm automatically goes into server mode if it detects a server class machine (=2GB RAM, 2 processors (which also includes ht or dualcore) leon maybe wrong though On 8/22/07, Ben Souther [EMAIL PROTECTED] wrote: It depends on which operating system you're using and how you've installed Tomcat. Can you tell us which it is? On Wed, 2007-08-22 at 07:19, Karel V Sedlacek wrote: Thanks for this info,... How do I implement this tip? #18. Use the -server JVM option. This enables the server JVM, which JIT compiles bytecode much earlier, and with stronger optimizations. Startup and first calls will be slower due to JIT compilation taking more time, but subsequent ones will be faster. Karel In putting #1 into the JAVA_OPTS (which it appears that is the CATALINA_OPTS for our implementation), it doesn't appear to work, as Tomcat doesn't restart. It could be our version -- which is currently 5.0.30. please let me know if there are other steps we need to take here as well. thanks, Kim :-) On 8/21/07, Shane Witbeck [EMAIL PROTECTED] wrote: I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/ Karel Sedlacek [EMAIL PROTECTED] CIT Data Administration Phn 607-255-7742 Cornell University Fax 607-255-1297 Ithaca, NY 14853 - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: 20 Tips for Using Tomcat in Production
From: Leon Rosenberg [mailto:[EMAIL PROTECTED] Subject: Re: 20 Tips for Using Tomcat in Production as far as i know this option is outdated, hence the vm automatically goes into server mode if it detects a server class machine (=2GB RAM, 2 processors (which also includes ht or dualcore) The automatic mode switch based on platform configuration occurs only when using the standard java launcher. If running as a Windows service, the selection of the server or client .dll must be done explicitly in the service properties. - 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 start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] 20 Tips for Using Tomcat in Production
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Karel, Karel V Sedlacek wrote: I am running a 4 core, 8GB, Server 2003 SP1 EE (not R2) machine. One JRE: 1.5.0_09 Oh, it's a Windows machine. Are those ever called servers? ;) (Just kidding.) - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGzETh9CaO5/Lv0PARAkAXAJ9YXVbnB+Q+epFof/Z1LC1eQ4nyVACfZp8H oyLDlkQgpgyP/8SwZLdOh5g= =H1v4 -END PGP SIGNATURE- - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: 20 Tips for Using Tomcat in Production
Thank you, we are running Windows,... will check the Service properties. At 09:55 AM 8/22/2007, you wrote: From: Leon Rosenberg [mailto:[EMAIL PROTECTED] Subject: Re: 20 Tips for Using Tomcat in Production as far as i know this option is outdated, hence the vm automatically goes into server mode if it detects a server class machine (=2GB RAM, 2 processors (which also includes ht or dualcore) The automatic mode switch based on platform configuration occurs only when using the standard java launcher. If running as a Windows service, the selection of the server or client .dll must be done explicitly in the service properties. - 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 start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Karel Sedlacek [EMAIL PROTECTED] CIT Data Administration Phn 607-255-7742 Cornell University Fax 607-255-1297 Ithaca, NY 14853 - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: [OT] 20 Tips for Using Tomcat in Production
Oh, it's a Windows machine. Are those ever called servers? ;) Well, I'm a Unix guy, so that's not what I call them. :) -Original Message- From: Christopher Schultz [mailto:[EMAIL PROTECTED] Sent: Wednesday, August 22, 2007 10:15 AM To: Tomcat Users List Subject: Re: [OT] 20 Tips for Using Tomcat in Production * PGP Signed by an unknown key Karel, Karel V Sedlacek wrote: I am running a 4 core, 8GB, Server 2003 SP1 EE (not R2) machine. One JRE: 1.5.0_09 Oh, it's a Windows machine. Are those ever called servers? ;) (Just kidding.) -chris * Unknown Key * 0xF2EFD0F0(L) - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: RES: 20 Tips for Using Tomcat in Production
Marcus, I'm not sure I understand... Karel At 10:21 AM 8/22/2007, you wrote: Another tip that could be considered is the use of Tomcat Native Libraries (http://tomcat.heanet.ie/native/) , what do you think? -Mensagem original- De: Caldarale, Charles R [mailto:[EMAIL PROTECTED] Enviada em: quarta-feira, 22 de agosto de 2007 10:56 Para: Tomcat Users List Assunto: RE: 20 Tips for Using Tomcat in Production From: Leon Rosenberg [mailto:[EMAIL PROTECTED] Subject: Re: 20 Tips for Using Tomcat in Production as far as i know this option is outdated, hence the vm automatically goes into server mode if it detects a server class machine (=2GB RAM, 2 processors (which also includes ht or dualcore) The automatic mode switch based on platform configuration occurs only when using the standard java launcher. If running as a Windows service, the selection of the server or client .dll must be done explicitly in the service properties. - Chuck - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Karel Sedlacek [EMAIL PROTECTED] CIT Data Administration Phn 607-255-7742 Cornell University Fax 607-255-1297 Ithaca, NY 14853 - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RES: RES: 20 Tips for Using Tomcat in Production
Hi Karel, Take a look at http://tomcat.apache.org/tomcat-5.5-doc/apr.html, which describes native libraries. We started using it sometime ago and we noticed better response times in or application. -Mensagem original- De: Karel Sedlacek [mailto:[EMAIL PROTECTED] Enviada em: quarta-feira, 22 de agosto de 2007 11:32 Para: Tomcat Users List Assunto: Re: RES: 20 Tips for Using Tomcat in Production Marcus, I'm not sure I understand... Karel At 10:21 AM 8/22/2007, you wrote: Another tip that could be considered is the use of Tomcat Native Libraries (http://tomcat.heanet.ie/native/) , what do you think? -Mensagem original- De: Caldarale, Charles R [mailto:[EMAIL PROTECTED] Enviada em: quarta-feira, 22 de agosto de 2007 10:56 Para: Tomcat Users List Assunto: RE: 20 Tips for Using Tomcat in Production From: Leon Rosenberg [mailto:[EMAIL PROTECTED] Subject: Re: 20 Tips for Using Tomcat in Production as far as i know this option is outdated, hence the vm automatically goes into server mode if it detects a server class machine (=2GB RAM, 2 processors (which also includes ht or dualcore) The automatic mode switch based on platform configuration occurs only when using the standard java launcher. If running as a Windows service, the selection of the server or client .dll must be done explicitly in the service properties. - Chuck - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Karel Sedlacek [EMAIL PROTECTED] CIT Data Administration Phn 607-255-7742 Cornell University Fax 607-255-1297 Ithaca, NY 14853 - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
I think I'll stick to the recommendations that I sort of understand... Thanks Karel At 11:22 AM 8/22/2007, you wrote: On 8/22/07, Milanez, Marcus [EMAIL PROTECTED] wrote: Another tip that could be considered is the use of Tomcat Native Libraries (http://tomcat.heanet.ie/native/) , what do you think? PLEASE DONT! (I won't) Leon -Mensagem original- De: Caldarale, Charles R [mailto:[EMAIL PROTECTED] Enviada em: quarta-feira, 22 de agosto de 2007 10:56 Para: Tomcat Users List Assunto: RE: 20 Tips for Using Tomcat in Production From: Leon Rosenberg [mailto:[EMAIL PROTECTED] Subject: Re: 20 Tips for Using Tomcat in Production as far as i know this option is outdated, hence the vm automatically goes into server mode if it detects a server class machine (=2GB RAM, 2 processors (which also includes ht or dualcore) The automatic mode switch based on platform configuration occurs only when using the standard java launcher. If running as a Windows service, the selection of the server or client .dll must be done explicitly in the service properties. - Chuck - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Karel Sedlacek [EMAIL PROTECTED] CIT Data Administration Phn 607-255-7742 Cornell University Fax 607-255-1297 Ithaca, NY 14853 - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RES: 20 Tips for Using Tomcat in Production
What's wrong? Problems with native libraries? -Mensagem original- De: Leon Rosenberg [mailto:[EMAIL PROTECTED] Enviada em: quarta-feira, 22 de agosto de 2007 12:23 Para: Tomcat Users List Assunto: Re: 20 Tips for Using Tomcat in Production On 8/22/07, Milanez, Marcus [EMAIL PROTECTED] wrote: Another tip that could be considered is the use of Tomcat Native Libraries (http://tomcat.heanet.ie/native/) , what do you think? PLEASE DONT! Leon -Mensagem original- De: Caldarale, Charles R [mailto:[EMAIL PROTECTED] Enviada em: quarta-feira, 22 de agosto de 2007 10:56 Para: Tomcat Users List Assunto: RE: 20 Tips for Using Tomcat in Production From: Leon Rosenberg [mailto:[EMAIL PROTECTED] Subject: Re: 20 Tips for Using Tomcat in Production as far as i know this option is outdated, hence the vm automatically goes into server mode if it detects a server class machine (=2GB RAM, 2 processors (which also includes ht or dualcore) The automatic mode switch based on platform configuration occurs only when using the standard java launcher. If running as a Windows service, the selection of the server or client .dll must be done explicitly in the service properties. - Chuck - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: 20 Tips for Using Tomcat in Production
From: Milanez, Marcus [mailto:[EMAIL PROTECTED] Subject: RES: 20 Tips for Using Tomcat in Production What's wrong? Problems with native libraries? Makes the environment much more complex and is platform-specific, eliminating one of Tomcat's highly desirable attributes - platform independence. If maximum performance is needed, then it's certainly appropriate, but many (most?) servers are rarely ever saturated. - 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 start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
20 Tips for Using Tomcat in Production
I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/ - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RES: 20 Tips for Using Tomcat in Production
Thank you very much! -Mensagem original- De: Shane Witbeck [mailto:[EMAIL PROTECTED] Enviada em: terça-feira, 21 de agosto de 2007 09:10 Para: users@tomcat.apache.org Assunto: 20 Tips for Using Tomcat in Production I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/ - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
Very nice. May i suggest 2 comments perhaps?:
6... If you're loading several applications with several of the same
library dependencies, consider moving them from the applications'
|WEB-INF/lib| directory to Tomcat's shared library
|{catalina.home}/shared/lib|. This will reduce the memory used by each
application and result in smaller WAR files.
You should make a remark that this change the behaviour of webapp:
a) Shared classloader is searched in last ressort when looking for
classes, according to
http://tomcat.apache.org/tomcat-5.5-doc/class-loader-howto.html.
b) Because the classes are shared, they share config singletons and
if they store objects statically they will prevent webapp unloading
7...Consider JDK 1.5 or even better JDK 1.6 to take advantage of
performance improvements.
Note that you can gain even more performance if you recompile your
string concatenation hungry (d=+b+ccc) support libaries for
jdk 5+ on a multi CPU system. This is because jdk5 uses the
non-synchronized stringbuilder instead of the jdk 4- synchronized
StringBuffer. And synchronization over multiple cpu takes a few more
cycles than on single CPU machines.
En l'instant précis du 21/08/07 14:10, Shane Witbeck s'exprimait en ces
termes:
I thought my latest blog post would be of interest to the people on this list:
http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
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Re: 20 Tips for Using Tomcat in Production
Good stuff I'm doing 70% of what you suggest and Tomcat 5.5.20 hums along nicely on Debian Linux with Java 1.5.0_04 I bet this one runs and runs ... Rgds Duncan On 8/21/07, Shane Witbeck [EMAIL PROTECTED] wrote: I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/ - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
Well... be careful on the use of the shared/common classloader. It
works as long as all the apps can use the same version of a library. If
there are changes to the API and you have the library in the shared or
common classloaders you'll have to upgrade all the webapps at once.
--David
David Delbecq wrote:
Very nice. May i suggest 2 comments perhaps?:
6... If you're loading several applications with several of the same
library dependencies, consider moving them from the applications'
|WEB-INF/lib| directory to Tomcat's shared library
|{catalina.home}/shared/lib|. This will reduce the memory used by each
application and result in smaller WAR files.
You should make a remark that this change the behaviour of webapp:
a) Shared classloader is searched in last ressort when looking for
classes, according to
http://tomcat.apache.org/tomcat-5.5-doc/class-loader-howto.html.
b) Because the classes are shared, they share config singletons and
if they store objects statically they will prevent webapp unloading
7...Consider JDK 1.5 or even better JDK 1.6 to take advantage of
performance improvements.
Note that you can gain even more performance if you recompile your
string concatenation hungry (d=+b+ccc) support libaries for
jdk 5+ on a multi CPU system. This is because jdk5 uses the
non-synchronized stringbuilder instead of the jdk 4- synchronized
StringBuffer. And synchronization over multiple cpu takes a few more
cycles than on single CPU machines.
En l'instant précis du 21/08/07 14:10, Shane Witbeck s'exprimait en ces
termes:
I thought my latest blog post would be of interest to the people on this list:
http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
Chris, Yes I agree that the extent at which #6 is implemented probably depends a lot on the size of the app (namely the number of libraries). There's already a link to the Tomcat original documentation for #3 although I noticed I forgot the link for #2. Thanks for the comments, Shane On 8/21/07, Christopher Schultz [EMAIL PROTECTED] wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Shane, Shane Witbeck wrote: I thought my latest blog post would be of interest to the people on this list: I like the list. Could you provide references where appropriate? For instance, you reference the Tomcat documentation in point #3, but don't provide a link to the original documentation so readers can see it in context. I also agree with David and, uh, David, that #6 is a little dubious. Yes, moving shared libraries into the common/lib directory will save you some memory, but it creates a management headache when it comes to version numbers, WAR packaging, etc. Ideally, the WAR contains everything the webapp needs. If you rely on the servlet container to provide essential libraries, you are changing your deployment strategy significantly. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGyvEd9CaO5/Lv0PARAkgHAKC+r4J+CMqaBtkBu52zw++/duGmngCglRuk Zjl7KeAJuD2q1xKhbUTjVxw= =C4Nf -END PGP SIGNATURE- - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Thank you, Shane Witbeck Digital Sanctum, inc. - skype: digitalsanctum blog: http://www.digitalsanctum.com - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
David,
Thanks for your comments. I've added them to the blog post for
everyone's benefit.
Shane
On 8/21/07, David Delbecq [EMAIL PROTECTED] wrote:
Very nice. May i suggest 2 comments perhaps?:
6... If you're loading several applications with several of the same
library dependencies, consider moving them from the applications'
|WEB-INF/lib| directory to Tomcat's shared library
|{catalina.home}/shared/lib|. This will reduce the memory used by each
application and result in smaller WAR files.
You should make a remark that this change the behaviour of webapp:
a) Shared classloader is searched in last ressort when looking for
classes, according to
http://tomcat.apache.org/tomcat-5.5-doc/class-loader-howto.html.
b) Because the classes are shared, they share config singletons and
if they store objects statically they will prevent webapp unloading
7...Consider JDK 1.5 or even better JDK 1.6 to take advantage of
performance improvements.
Note that you can gain even more performance if you recompile your
string concatenation hungry (d=+b+ccc) support libaries for
jdk 5+ on a multi CPU system. This is because jdk5 uses the
non-synchronized stringbuilder instead of the jdk 4- synchronized
StringBuffer. And synchronization over multiple cpu takes a few more
cycles than on single CPU machines.
En l'instant précis du 21/08/07 14:10, Shane Witbeck s'exprimait en ces
termes:
I thought my latest blog post would be of interest to the people on this
list:
http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
http://www.noooxml.org/
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
Thank you,
Shane Witbeck
Digital Sanctum, inc.
-
skype: digitalsanctum
blog: http://www.digitalsanctum.com
-
To start a new topic, e-mail: users@tomcat.apache.org
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Re: 20 Tips for Using Tomcat in Production
Tip #8:
You tell the users about the tomcat-users.xml file for adding the role
info but never tell them where to enter the RemoteAddrValve in order to
restrict IPs.
On Tue, 2007-08-21 at 10:57, Shane Witbeck wrote:
David,
Thanks for your comments. I've added them to the blog post for
everyone's benefit.
Shane
On 8/21/07, David Delbecq [EMAIL PROTECTED] wrote:
Very nice. May i suggest 2 comments perhaps?:
6... If you're loading several applications with several of the same
library dependencies, consider moving them from the applications'
|WEB-INF/lib| directory to Tomcat's shared library
|{catalina.home}/shared/lib|. This will reduce the memory used by each
application and result in smaller WAR files.
You should make a remark that this change the behaviour of webapp:
a) Shared classloader is searched in last ressort when looking for
classes, according to
http://tomcat.apache.org/tomcat-5.5-doc/class-loader-howto.html.
b) Because the classes are shared, they share config singletons and
if they store objects statically they will prevent webapp unloading
7...Consider JDK 1.5 or even better JDK 1.6 to take advantage of
performance improvements.
Note that you can gain even more performance if you recompile your
string concatenation hungry (d=+b+ccc) support libaries for
jdk 5+ on a multi CPU system. This is because jdk5 uses the
non-synchronized stringbuilder instead of the jdk 4- synchronized
StringBuffer. And synchronization over multiple cpu takes a few more
cycles than on single CPU machines.
En l'instant précis du 21/08/07 14:10, Shane Witbeck s'exprimait en ces
termes:
I thought my latest blog post would be of interest to the people on this
list:
http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
http://www.noooxml.org/
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
RES: 20 Tips for Using Tomcat in Production
We should create a wiki to accomplish all theses tips Why not?
-Mensagem original-
De: Ben Souther [mailto:[EMAIL PROTECTED]
Enviada em: terça-feira, 21 de agosto de 2007 14:46
Para: Tomcat Users List
Assunto: Re: 20 Tips for Using Tomcat in Production
Tip #8:
You tell the users about the tomcat-users.xml file for adding the role info but
never tell them where to enter the RemoteAddrValve in order to restrict IPs.
On Tue, 2007-08-21 at 10:57, Shane Witbeck wrote:
David,
Thanks for your comments. I've added them to the blog post for
everyone's benefit.
Shane
On 8/21/07, David Delbecq [EMAIL PROTECTED] wrote:
Very nice. May i suggest 2 comments perhaps?:
6... If you're loading several applications with several of the same
library dependencies, consider moving them from the applications'
|WEB-INF/lib| directory to Tomcat's shared library
|{catalina.home}/shared/lib|. This will reduce the memory used by
|each
application and result in smaller WAR files.
You should make a remark that this change the behaviour of webapp:
a) Shared classloader is searched in last ressort when looking for
classes, according to
http://tomcat.apache.org/tomcat-5.5-doc/class-loader-howto.html.
b) Because the classes are shared, they share config singletons
and if they store objects statically they will prevent webapp
unloading
7...Consider JDK 1.5 or even better JDK 1.6 to take advantage of
performance improvements.
Note that you can gain even more performance if you recompile your
string concatenation hungry (d=+b+ccc) support libaries
for jdk 5+ on a multi CPU system. This is because jdk5 uses the
non-synchronized stringbuilder instead of the jdk 4- synchronized
StringBuffer. And synchronization over multiple cpu takes a few more
cycles than on single CPU machines.
En l'instant précis du 21/08/07 14:10, Shane Witbeck s'exprimait en
ces
termes:
I thought my latest blog post would be of interest to the people on this
list:
http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-
in-production/
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Re: 20 Tips for Using Tomcat in Production
Good point. I've updated the entry to be more specific. Thanks!
On 8/21/07, Ben Souther [EMAIL PROTECTED] wrote:
Tip #8:
You tell the users about the tomcat-users.xml file for adding the role
info but never tell them where to enter the RemoteAddrValve in order to
restrict IPs.
On Tue, 2007-08-21 at 10:57, Shane Witbeck wrote:
David,
Thanks for your comments. I've added them to the blog post for
everyone's benefit.
Shane
On 8/21/07, David Delbecq [EMAIL PROTECTED] wrote:
Very nice. May i suggest 2 comments perhaps?:
6... If you're loading several applications with several of the same
library dependencies, consider moving them from the applications'
|WEB-INF/lib| directory to Tomcat's shared library
|{catalina.home}/shared/lib|. This will reduce the memory used by each
application and result in smaller WAR files.
You should make a remark that this change the behaviour of webapp:
a) Shared classloader is searched in last ressort when looking for
classes, according to
http://tomcat.apache.org/tomcat-5.5-doc/class-loader-howto.html.
b) Because the classes are shared, they share config singletons and
if they store objects statically they will prevent webapp unloading
7...Consider JDK 1.5 or even better JDK 1.6 to take advantage of
performance improvements.
Note that you can gain even more performance if you recompile your
string concatenation hungry (d=+b+ccc) support libaries for
jdk 5+ on a multi CPU system. This is because jdk5 uses the
non-synchronized stringbuilder instead of the jdk 4- synchronized
StringBuffer. And synchronization over multiple cpu takes a few more
cycles than on single CPU machines.
En l'instant précis du 21/08/07 14:10, Shane Witbeck s'exprimait en ces
termes:
I thought my latest blog post would be of interest to the people on
this list:
http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
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Thank you,
Shane Witbeck
Digital Sanctum, inc.
-
skype: digitalsanctum
blog: http://www.digitalsanctum.com
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Re: 20 Tips for Using Tomcat in Production
The connector entries are also case sensitive:
connector port=8009 ...
Should be
Connector port=8009 ...
On Tue, 2007-08-21 at 13:55, Shane Witbeck wrote:
Good point. I've updated the entry to be more specific. Thanks!
On 8/21/07, Ben Souther [EMAIL PROTECTED] wrote:
Tip #8:
You tell the users about the tomcat-users.xml file for adding the role
info but never tell them where to enter the RemoteAddrValve in order to
restrict IPs.
On Tue, 2007-08-21 at 10:57, Shane Witbeck wrote:
David,
Thanks for your comments. I've added them to the blog post for
everyone's benefit.
Shane
On 8/21/07, David Delbecq [EMAIL PROTECTED] wrote:
Very nice. May i suggest 2 comments perhaps?:
6... If you're loading several applications with several of the same
library dependencies, consider moving them from the applications'
|WEB-INF/lib| directory to Tomcat's shared library
|{catalina.home}/shared/lib|. This will reduce the memory used by each
application and result in smaller WAR files.
You should make a remark that this change the behaviour of webapp:
a) Shared classloader is searched in last ressort when looking for
classes, according to
http://tomcat.apache.org/tomcat-5.5-doc/class-loader-howto.html.
b) Because the classes are shared, they share config singletons and
if they store objects statically they will prevent webapp unloading
7...Consider JDK 1.5 or even better JDK 1.6 to take advantage of
performance improvements.
Note that you can gain even more performance if you recompile your
string concatenation hungry (d=+b+ccc) support libaries for
jdk 5+ on a multi CPU system. This is because jdk5 uses the
non-synchronized stringbuilder instead of the jdk 4- synchronized
StringBuffer. And synchronization over multiple cpu takes a few more
cycles than on single CPU machines.
En l'instant précis du 21/08/07 14:10, Shane Witbeck s'exprimait en ces
termes:
I thought my latest blog post would be of interest to the people on
this list:
http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
http://www.noooxml.org/
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
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To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
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Re: 20 Tips for Using Tomcat in Production
Thanks! I've corrected the entries.
On 8/21/07, Ben Souther [EMAIL PROTECTED] wrote:
The connector entries are also case sensitive:
connector port=8009 ...
Should be
Connector port=8009 ...
On Tue, 2007-08-21 at 13:55, Shane Witbeck wrote:
Good point. I've updated the entry to be more specific. Thanks!
On 8/21/07, Ben Souther [EMAIL PROTECTED] wrote:
Tip #8:
You tell the users about the tomcat-users.xml file for adding the role
info but never tell them where to enter the RemoteAddrValve in order to
restrict IPs.
On Tue, 2007-08-21 at 10:57, Shane Witbeck wrote:
David,
Thanks for your comments. I've added them to the blog post for
everyone's benefit.
Shane
On 8/21/07, David Delbecq [EMAIL PROTECTED] wrote:
Very nice. May i suggest 2 comments perhaps?:
6... If you're loading several applications with several of the same
library dependencies, consider moving them from the applications'
|WEB-INF/lib| directory to Tomcat's shared library
|{catalina.home}/shared/lib|. This will reduce the memory used by each
application and result in smaller WAR files.
You should make a remark that this change the behaviour of webapp:
a) Shared classloader is searched in last ressort when looking for
classes, according to
http://tomcat.apache.org/tomcat-5.5-doc/class-loader-howto.html.
b) Because the classes are shared, they share config singletons and
if they store objects statically they will prevent webapp unloading
7...Consider JDK 1.5 or even better JDK 1.6 to take advantage of
performance improvements.
Note that you can gain even more performance if you recompile your
string concatenation hungry (d=+b+ccc) support libaries for
jdk 5+ on a multi CPU system. This is because jdk5 uses the
non-synchronized stringbuilder instead of the jdk 4- synchronized
StringBuffer. And synchronization over multiple cpu takes a few more
cycles than on single CPU machines.
En l'instant précis du 21/08/07 14:10, Shane Witbeck s'exprimait en
ces
termes:
I thought my latest blog post would be of interest to the people on
this list:
http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
http://www.noooxml.org/
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
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To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
--
Thank you,
Shane Witbeck
Digital Sanctum, inc.
-
skype: digitalsanctum
blog: http://www.digitalsanctum.com
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Re: 20 Tips for Using Tomcat in Production
In putting #1 into the JAVA_OPTS (which it appears that is the CATALINA_OPTS for our implementation), it doesn't appear to work, as Tomcat doesn't restart. It could be our version -- which is currently 5.0.30. please let me know if there are other steps we need to take here as well. thanks, Kim :-) On 8/21/07, Shane Witbeck [EMAIL PROTECTED] wrote: I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/ - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
You can actually use JAVA_OPTS or CATALINA_OPTS to add the options and the options only apply to JDK 1.5 or above. I don't think the version of Tomcat matters here. Shane On 8/21/07, Kim Albee [EMAIL PROTECTED] wrote: In putting #1 into the JAVA_OPTS (which it appears that is the CATALINA_OPTS for our implementation), it doesn't appear to work, as Tomcat doesn't restart. It could be our version -- which is currently 5.0.30. please let me know if there are other steps we need to take here as well. thanks, Kim :-) On 8/21/07, Shane Witbeck [EMAIL PROTECTED] wrote: I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/ - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Thank you, Shane Witbeck Digital Sanctum, inc. - skype: digitalsanctum blog: http://www.digitalsanctum.com - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Shane, Shane Witbeck wrote: You can actually use JAVA_OPTS or CATALINA_OPTS to add the options and the options only apply to JDK 1.5 or above. I don't think the version of Tomcat matters here. There is a (minor) difference between the two: JAVA_OPTS will always be passed to the Java process (including a stop command), while CATALINA_OPTS will only be passed when you use the start and run commands. - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGy15a9CaO5/Lv0PARApoOAJ9VANwQ8wPJnrAtSluG9g+KJ5/cbgCgoVH0 CZiSJdduRHree380Y5UraVY= =8P48 -END PGP SIGNATURE- - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
From: Christopher Schultz I also agree with David and, uh, David, that #6 is a little dubious. Yes, moving shared libraries into the common/lib directory will save you some memory, but it creates a management headache when it comes to version numbers, WAR packaging, etc. Ideally, the WAR contains everything the webapp needs. If you rely on the servlet container to provide essential libraries, you are changing your deployment strategy significantly. +1 Starting with Servlet Spec 2.3 (I think) there has been an emphasis on putting everything a web app needs to run into its war file. To put include something that runs contrary to this 'best practice' in an article of tips at this point in time doesn't sound like a good idea. I would seriously consider replacing that one with something else. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: 20 Tips for Using Tomcat in Production
I agree, i'm not willing to pay the management overhead of putting my shared libraries to the tomcat common lib, unless my gains are very big in terms of memory consumption. I don't really think you should change for another one though, but you can make regards about the cons of that approach. Anyway, great work 5 stars. On 8/21/07, Ben Souther [EMAIL PROTECTED] wrote: From: Christopher Schultz I also agree with David and, uh, David, that #6 is a little dubious. Yes, moving shared libraries into the common/lib directory will save you some memory, but it creates a management headache when it comes to version numbers, WAR packaging, etc. Ideally, the WAR contains everything the webapp needs. If you rely on the servlet container to provide essential libraries, you are changing your deployment strategy significantly. +1 Starting with Servlet Spec 2.3 (I think) there has been an emphasis on putting everything a web app needs to run into its war file. To put include something that runs contrary to this 'best practice' in an article of tips at this point in time doesn't sound like a good idea. I would seriously consider replacing that one with something else. - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- Diego Yasuhiko Kurisaki
Re: 20 Tips for Using Tomcat in Production
#6 - Shared classloaders are evil, but not as evil as the invoker servlet. With a shared loader you can easily get Singleton assumptions being wrong, class cast exceptions, versioning woes, and other issues. Saving a little perm memory just doesn't justify it. #7 - You should have a staging environment just like production. Your development environment can just be a laptop which will probably somewhat underpowered compared to your production instance. -Tim Shane Witbeck wrote: I thought my latest blog post would be of interest to the people on this list: http://www.digitalsanctum.com/2007/08/18/20-tips-for-using-tomcat-in-production/ - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
