Michael,
So far pretty good. Most people I talk to about this haven't even
heard about tuning their JVM. My article is not complete yet and your
past the parts that I have posted.
So here are a few items for your java.args line. Your setting
maxpermsize and permsize. Good, but make them the same size. You
also need to get garbage collection under control. The last three
items will do that. This should get you going pretty smoothly. Also,
how much physical memory does your server have?
-XX:MaxPermSize=128m
-XX:PermSize=128m
-Dsun.rmi.dgc.client.gcInterval=600000
-Dsun.rmi.dgc.server.gcInterval=600000
-XX:+UseParallelGC
Wil Genovese
One man with courage makes a majority.
-Andrew Jackson
A fine is a tax for doing wrong. A tax is a fine for doing well.
On May 29, 2008, at 1:54 PM, Michael Patti wrote:
> Thanks Wil,
>
> I have actually been doing a fair amount of tuning the JVM. I'll
> definitely read your article, but in the meanwhile, here's my
> jvm.config file. Let me know if it seems totally wrong:
>
> #
> # VM configuration
> #
> # Where to find JVM, if {java.home}/jre exists then that JVM is used
> # if not then it must be the path to the JRE itself
> java.home=C:/j2sdk1.4.2_16/jre
> #
> # If no java.home is specified a VM is located by looking in these
> places in this
> # order:
> #
> # 1) bin directory for java.dll (windows) or lib/<ARCH>/libjava.so
> (unix)
> # 2) ../jre
> # 3) registry (windows only)
> # 4) JAVA_HOME env var plus jre (ie $JAVA_HOME/jre)
> #
>
> # Arguments to VM
> java.args=-server -DJINTEGRA_NATIVE_MODE -DJINTEGRA_PREFETCH_ENUMS -
> Xms1024m -Xmx1024m -Dsun.io.useCanonCaches=false -
> XX:MaxPermSize=128m -XX:PermSize=64m -XX:NewSize=48m -
> Dcoldfusion.rootDir={application.home}/../ -
> Dcoldfusion.libPath={application.home}/../lib -XX:
> +UseConcMarkSweepGC -Dcoldfusion.classPath={application.home}/../lib/
> updates,{application.home}/../lib,{application.home}/../gateway/lib/,
> {application.home}/../wwwroot/WEB-INF/cfform/jars,c:\\CfusionMX7\
> \classpath
>
> #
> # commas will be converted to platform specific separator and the
> result will be passed
> # as -Djava.ext.dirs= to the VM
> java.ext.dirs={jre.home}/lib/ext
>
> #
> # where to find shared libraries
> java.library.path={application.home}/../lib,{application.home}/../
> jintegra/bin,{application.home}/../jintegra/bin/international
> system.path.first=false
>
> #
> # set the current working directory - useful for Windows to control
> # the default search path used when loading DLLs since it comes
> # before system directory, windows directory and PATH
> java.user.dir={application.home}/../../lib
>
> # JVM classpath
> java.class.path={application.home}/servers/lib,{application.home}/../
> lib/macromedia_drivers.jar,{application.home}/lib/cfmx_mbean.jar,
> {application.home}/lib
>
>
>> Actually with the small but growing load you have (small compared to
>> what our servers get) you may be getting to the point where you need
>> to do some JVM tuning.
>>
>> What version JVM are you running and please post the java.args line
>> from the jvm.config file. I can offer plenty of tuning help.
>>
>> I just started my own blog (why not everyone else has one) and I was
>> starting to write up how to tune the JVM for high availability. You
>> can start here and maybe I will finish the article soon. But I can
>> answer your questions here also.
>>
>> http://www.trunkful.com/index.cfm/2008/5/19/How-to-Tune-the-JVM-
>> Part-1 (and no I am not a designer)
>>
>> Wil Genovese
>>
>> One man with courage makes a majority.
>> -Andrew Jackson
>>
>> A fine is a tax for doing wrong. A tax is a fine for doing well.
>>
>> On May 29, 2008, at 1:31 PM, Michael Patti wrote:
>>
>>>
>
>
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