AW: How to increase memory
Where do I have to add this? Also in the catalina.bat? I tested set CATALINA_OPTS=%CATALINA_OPTS% -Xms1024m -Xmx2048m in Catalona.bat as mentioned from Thilo Krawietz' email. Still it seems to be very slow. Thank you Gunnar -Ursprüngliche Nachricht- Von: alu, artifex [mailto:[EMAIL PROTECTED] Gesendet: Donnerstag, 1. Juli 2004 16:59 An: Tomcat Users List Betreff: Re: How to increase memory by setting the environment variable JAVA_OPTS to something like this: -Xms32m -Xmx512m this will cause the vm to allocate 32m at startup and limits the maximum java heap memory size to 512mb. you can set the environment variable by adding the following command somewhere at the beginning of startup.bat: set JAVA_OPTS=-Xms32m -Xmx512m art Gunnar Pörschke wrote: where and how do I increase memory (win2003Srv) for tomcat (4.1.30)? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: AW: How to increase memory
CATALINA_OPTS=%CATALINA_OPTS% -Xms1024m -Xmx2048m note quotes (need that ammendment in Linux, try something similar for Window$e if needed..) Also, if you put a -Xloggc:/usr/local/tomcat/logs/gc.log (check syntax with java -X help) do Xloggc before and after changing memory size, then have a look if gc cycles change. You can use HPjtune to graphically see the cycles. Do you need to include the -server in the above string depending on your JVM ? You want 3-10% max of cpu time in gc and periodic cycles. I'd say start from very low initial heap with a decent max setting and look at gc. Anyway, 1GIG initial heap is massive - why u need it so big? I've got a very intensive app, and initial heap of 80m, max heap of 768 works fine. Remember, it's a combination of initial heap and max heap that determine your apps gc cycles. Try look at using incremental gc ?? Whilst you are testing your app, check cpu usage to see it's not being killed, if so get better box. Pete. Gunnar Pörschke wrote: Where do I have to add this? Also in the catalina.bat? I tested set CATALINA_OPTS=%CATALINA_OPTS% -Xms1024m -Xmx2048m in Catalona.bat as mentioned from Thilo Krawietz' email. Still it seems to be very slow. Thank you Gunnar -Ursprüngliche Nachricht- Von: alu, artifex [mailto:[EMAIL PROTECTED] Gesendet: Donnerstag, 1. Juli 2004 16:59 An: Tomcat Users List Betreff: Re: How to increase memory by setting the environment variable JAVA_OPTS to something like this: -Xms32m -Xmx512m this will cause the vm to allocate 32m at startup and limits the maximum java heap memory size to 512mb. you can set the environment variable by adding the following command somewhere at the beginning of startup.bat: set JAVA_OPTS=-Xms32m -Xmx512m art Gunnar Pörschke wrote: where and how do I increase memory (win2003Srv) for tomcat (4.1.30)? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: AW: How to increase memory
as i stated before: try adding the following line in the startup.bat file set JAVA_OPTS=-Xms32m -Xmx512m you can add it at the very first line, before (or shortly after) the @echo off statement. Still it seems to be very slow. maybe you don't face memory problems. you can use windows task manager to determine the memory usage of tomcat. look for a process called java.exe and see how much memory it is using. art ps: falls du noch ausführlichere hilfe auf deutsch brauchst - mail an mich =) Gunnar Pörschke wrote: Where do I have to add this? Also in the catalina.bat? I tested set CATALINA_OPTS=%CATALINA_OPTS% -Xms1024m -Xmx2048m in Catalona.bat as mentioned from Thilo Krawietz' email. Still it seems to be very slow. Thank you Gunnar -Ursprüngliche Nachricht- Von: alu, artifex [mailto:[EMAIL PROTECTED] Gesendet: Donnerstag, 1. Juli 2004 16:59 An: Tomcat Users List Betreff: Re: How to increase memory by setting the environment variable JAVA_OPTS to something like this: -Xms32m -Xmx512m this will cause the vm to allocate 32m at startup and limits the maximum java heap memory size to 512mb. you can set the environment variable by adding the following command somewhere at the beginning of startup.bat: set JAVA_OPTS=-Xms32m -Xmx512m art Gunnar Pörschke wrote: where and how do I increase memory (win2003Srv) for tomcat (4.1.30)? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: AW: How to increase memory
Hi Gunnar, if you added these options in CATALINA_OPTS, its not necessary to place it also in JAVA_OPTS. Both variables are attached to 'java' command at the bottom of catalina.bat (you can see this in the bottom of catalina.bat at the line commencing with the %EXECJAVA% statement) But if this command did not increase performance, i guess that your problem is not related to a lack of memory. What type of machine are you using? Regards, Thilo Where do I have to add this? Also in the catalina.bat? I tested set CATALINA_OPTS=%CATALINA_OPTS% -Xms1024m -Xmx2048m in Catalona.bat as mentioned from Thilo Krawietz' email. Still it seems to be very slow. Thank you Gunnar -Ursprüngliche Nachricht- Von: alu, artifex [mailto:[EMAIL PROTECTED] Gesendet: Donnerstag, 1. Juli 2004 16:59 An: Tomcat Users List Betreff: Re: How to increase memory by setting the environment variable JAVA_OPTS to something like this: -Xms32m -Xmx512m this will cause the vm to allocate 32m at startup and limits the maximum java heap memory size to 512mb. you can set the environment variable by adding the following command somewhere at the beginning of startup.bat: set JAVA_OPTS=-Xms32m -Xmx512m art Gunnar Pörschke wrote: where and how do I increase memory (win2003Srv) for tomcat (4.1.30)? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
