Re: Tomcat (javac)compilation arguments
On 8/27/07, Caldarale, Charles R [EMAIL PROTECTED] wrote: I'm really curious about one thing: if the OP has a 64-bit environment, why is he being so stingy with heap space? In the OP, what I found interesting was that the default heap size wasn't enough to start Tomcat? According to SUN, the default is around 83 MB for 64-bit JVMs [1]. Does that make sense? Manivannan mentioned that Tomcat doesn't throw any exceptions, it just never starts. I wouldn't have thought that heap was the problem at that point. -- brian [1] - http://java.sun.com/docs/hotspot/HotSpotFAQ.html#64bit_heap_defaults - 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: Tomcat (javac)compilation arguments
From: Brian Munroe [mailto:[EMAIL PROTECTED] Subject: Re: Tomcat (javac)compilation arguments In the OP, what I found interesting was that the default heap size wasn't enough to start Tomcat? According to SUN, the default is around 83 MB for 64-bit JVMs [1]. That's the minimum value for the maximum heap size. If the JVM detects that it's running on a server-class machine (any 64-bit system, for example), it's more complicated: http://java.sun.com/j2se/1.5.0/docs/guide/vm/server-class.html http://java.sun.com/j2se/1.5.0/docs/guide/vm/gc-ergonomics.html Manivannan mentioned that Tomcat doesn't throw any exceptions, it just never starts. I wouldn't have thought that heap was the problem at that point. Probably not, but there's precious little real information in the problem statement. - 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: Tomcat (javac)compilation arguments
oh!
Then, let me put my question clear first..
My problem is: I am trying to install java tomcat on a server (redhat
linux, 64 bit), which runs on shared memory. I need to limit down java start
up memory, by passing arguments like $javac -J -Xmx118m $java -Xmx118m so
that the virtual machince starts, otherwise it is terminated.
So, I assume (yes, assumption only) I need to pass same arguments to tomcat,
so that it can start without any error (I also assume, tomcat uses javac and
java in an indirect way to compile run). So, can you tell me a way how i
pass those arguments to tomcat's javac java?
I am not able to start tomcat. it is throwing any exception/error but,
simply the prompt returns.
--
Manivannan Palanichamy
http://mani.gw.googlepages.com/index.html
On 8/26/07, Brian Munroe [EMAIL PROTECTED] wrote:
On 8/25/07, Manivannan Palanichamy [EMAIL PROTECTED]
wrote:
I need to pass javac (compilation) arguments to tomcat. Just as
JAVA_OPTS is
there for jvm arguments, is there any env var/ other ways to pass
arguments
to javac of tomcat?
Hum, 'javac of tomcat' - Do you mean the JSP Compiler, or do you
really mean javac, which is used when say, compiling Servlets?
I am not aware of an environment variable ala JAVA_OPTS. However, if
you are using Ant, you can add a compilearg as a nested element
within the javac element.
For example:
javac srcdir=${src.home}
destdir=${build.home}/WEB-INF/classes
debug=${compile.debug}
deprecation=${compile.deprecation}
optimize=${compile.optimize}
classpath refid=compile.classpath/
compilerarg value=-Xlint /
/javac
If this isn't what you were looking for, please advise.
-- brian
-
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Re: Tomcat (javac)compilation arguments
On 8/27/07, Manivannan Palanichamy [EMAIL PROTECTED] wrote: My problem is: I am trying to install java tomcat on a server (redhat linux, 64 bit), which runs on shared memory. I need to limit down java start up memory, by passing arguments like $javac -J -Xmx118m $java -Xmx118m so that the virtual machince starts, otherwise it is terminated. I understand. I think what you are looking for is CATALINA_OPTS and/or JAVA_OPTS. This link below is for Tomcat 4.0, but the concept is still valid. http://books.google.com/books?id=fYygS5Jf6g4Cpg=PA15lpg=PA15dq=catalina_optssource=webots=FKXI_AtgUlsig=kyodX_5z9g2CSLGk9AEvXcfor7E also see http://tomcat.apache.org/faq/memory.html These are both for the JVM, you will still have to pass javac command line arguments. One other thing. -In my environment, I run tomcat instances as separate users, via the 'su' command. When I first tried this technique, I was placing environment variables at the top of the startup script, but they were being ignored. I ended up having to place them in $HOME/.bashrc (for example), which now makes perfect sense. I doubt this is the case for you, but I just wanted to point it out, in case your variables weren't being picked up or something. -- brian - 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: Tomcat (javac)compilation arguments
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Manivannan, Manivannan Palanichamy wrote: My problem is: I am trying to install java tomcat on a server (redhat linux, 64 bit), which runs on shared memory. I need to limit down java start up memory, by passing arguments like $javac -J -Xmx118m $java -Xmx118m so that the virtual machince starts, otherwise it is terminated. Though I'm not positive, I'm pretty sure that the JSP compiler within Tomcat runs in-process; that is, it runs in the same memory space that is used by the Tomcat process itself. So, if you set JAVA_OPTS to include -Xmx118m, then you will be limiting the amount of memory available to the entire JVM, including the JSP compiler. You can do this by either modifying the startup.sh script (which I don't recommend), or writing your own startup script that looks like this: #!/bin/sh TOMCAT_HOME=... export JAVA_OPTS='-Xmx118m' $TOMCAT_HOME/bin/startup.sh - -chris -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFG0vZH9CaO5/Lv0PARAj6iAJ9GtaIgz2S4E9XzJFlK8DTRWOBRdwCgpIa4 JTaoccIgziaoWZ5uBddaWFw= =mWzo -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: Tomcat (javac)compilation arguments
From: Christopher Schultz [mailto:[EMAIL PROTECTED] Subject: Re: Tomcat (javac)compilation arguments Though I'm not positive, I'm pretty sure that the JSP compiler within Tomcat runs in-process; That's true by default. However, there is a fork parameter that can be set for the JSP servlet to cause compilation in a different process. I have no idea how to pass heap size parameters to such a secondary process. Also note that Tomcat no longer uses javac to compile translated JSPs into .class files, unless you specifically configure it to do so. I'm really curious about one thing: if the OP has a 64-bit environment, why is he being so stingy with heap space? - 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: Tomcat (javac)compilation arguments
On 8/25/07, Manivannan Palanichamy [EMAIL PROTECTED] wrote:
I need to pass javac (compilation) arguments to tomcat. Just as JAVA_OPTS is
there for jvm arguments, is there any env var/ other ways to pass arguments
to javac of tomcat?
Hum, 'javac of tomcat' - Do you mean the JSP Compiler, or do you
really mean javac, which is used when say, compiling Servlets?
I am not aware of an environment variable ala JAVA_OPTS. However, if
you are using Ant, you can add a compilearg as a nested element
within the javac element.
For example:
javac srcdir=${src.home}
destdir=${build.home}/WEB-INF/classes
debug=${compile.debug}
deprecation=${compile.deprecation}
optimize=${compile.optimize}
classpath refid=compile.classpath/
compilerarg value=-Xlint /
/javac
If this isn't what you were looking for, please advise.
-- brian
-
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