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From David Johnson <chach...@gmail.com>
Subject Re: Out of Memory when compiling JSP (Struts app on Tomcat 4.1.27)
Date Thu, 06 Jan 2005 15:40:27 GMT
Cool. Thanks

the question is how do I get all of these options working when tomcat
runs as a service...




On Thu, 6 Jan 2005 15:28:30 -0000, Dale, Matt <Matt.Dale@becogent.com> wrote:
> It could also be that the Permanent Generation has filled up, look up the docs on how
to increase that or start with -XX:MaxPermSize=128M
> 
> -----Original Message-----
> From: SANTOS, DANIEL (SBCSI) [mailto:ds7867@sbc.com]
> Sent: 06 January 2005 14:57
> To: Tomcat Users List; chachany@gmail.com
> Subject: RE: Out of Memory when compiling JSP (Struts app on Tomcat
> 4.1.27)
> 
> Chachany,
> 
> It sounds like it's using the default of -Xmx64m.  Probably the best way
> to troubleshoot out or memory errors is to see what is really happening
> with garbage collecting, the same way that you tune it.  If you can add
> these options, then the JVM will spit out all kinds of useful
> information:
> 
> -XX:+PrintTenuringDistribution -XX:+PrintGCDetails -Xverbosegc
> 
> But it sounds like the problem is that it's not getting the options.
> What you really need to figure out is exactly how the service is getting
> started.  For instance, if it's calling tomcat.exe then I don't believe
> that the JAVA_OPTS environment variable is ever looked at since that is
> in the startup.sh and startup.bat files (I'm not 100% certain about that
> however).
> 
> Find out how it's starting.  Also, post the version of Java you are
> using (since the options I gave you above don't work on all versions, I
> think 1.4 and up or 1.3 and up).  But the -Xverbosegc works all the way
> back to 1.1 if I'm correct.
> 
> Daniel
> 
> -----Original Message-----
> From: chachany@gmail.com [mailto:chachany@gmail.com]
> Sent: Thursday, January 06, 2005 8:25 AM
> To: tomcat-user@jakarta.apache.org
> Subject: Out of Memory when compiling JSP (Struts app on Tomcat 4.1.27)
> 
> Hi all
> 
> I'm working on an application currently that is experiencing some
> intermittent memory problems when installed onto our "integration
> test" server, but not on the development staff's local laptops.
> 
> I have attempted to increase the maximum memory available to Tomcat by
> creating a global environment variable (because tomcat runs as a
> service)
> 
> JAVA_OPTS=-Xmx512M
> 
> Which doesnt seem to have made a difference. Is this the best way to
> increaqte the memory available to an application? Is my syntax wrong?
> Are there other options I can set that will help?
> 
> The weird thing is that when I look at the memory usage of Tomcat.exe,
> the most memory it has used is 110,000
> 
> there seems to be no pattern to the memory errors (as usual) and it
> happens a lot when compiling JSP files.
> 
> The system memory seems high, but not horribly so. I see the following
> in Task Manager
> 
> MEM Usage = 885,000 (varies)
> 
> Commit Charge:
> Limit : 2,522,244
> Peak : 958,260
> 
> Anyone?
> 
> Thanks!
> 
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